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class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.14240">arXiv:2412.14240</a> <span> [<a href="https://arxiv.org/pdf/2412.14240">pdf</a>, <a href="https://arxiv.org/format/2412.14240">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> Noble Dark Matter: Surprising Elusiveness of Dark Baryons </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Batz%2C+A">Austin Batz</a>, <a href="/search/?searchtype=author&query=Kribs%2C+G+D">Graham D. Kribs</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2412.14240v1-abstract-short" style="display: inline;"> Dark matter could be a baryonic composite of strongly-coupled constituents transforming under SU(2)$_L$. We classify the SU(2)$_L$ representations of baryons in a class of simple confining dark sectors and find that the lightest state can be a pure singlet or a singlet that mixes with other neutral components of SU(2)$_L$ representations, which strongly suppresses the dark matter candidate's inter… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.14240v1-abstract-full').style.display = 'inline'; document.getElementById('2412.14240v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.14240v1-abstract-full" style="display: none;"> Dark matter could be a baryonic composite of strongly-coupled constituents transforming under SU(2)$_L$. We classify the SU(2)$_L$ representations of baryons in a class of simple confining dark sectors and find that the lightest state can be a pure singlet or a singlet that mixes with other neutral components of SU(2)$_L$ representations, which strongly suppresses the dark matter candidate's interactions with the Standard Model. We focus on models with a confining $\text{SU}(N_c)$ and heavy dark quarks constituting vector-like $N_f$-plet of SU(2)$_L$. For benchmark $N_c$ and $N_f$, we calculate baryon mass spectra, incorporating electroweak gauge boson exchange in the non-relativistic quark model, and demonstrate that above TeV mass scales, dark matter is dominantly a singlet state. The combination of this singlet nature with the recently discovered $\mathcal{H}$-parity results in an inert state analogous to noble gases, hence we coin the term Noble Dark Matter. Our results can be understood in the non-relativistic effective theory that treats the dark baryons as elementary states, where we find singlets accompanying triplets, 5-plets, or more exotic representations. This generalization of WIMP-like theories is more difficult to find or rule out than dark matter models that include only a single SU(2)$_L$ multiplet (such as a Wino), motivating new searches in colliders and a re-analysis of direct and indirect detection prospects in astrophysical observations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.14240v1-abstract-full').style.display = 'none'; document.getElementById('2412.14240v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 (double-column) + 20 (single-column) pages, 2 figures, 1+3 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.14235">arXiv:2412.14235</a> <span> [<a href="https://arxiv.org/pdf/2412.14235">pdf</a>, <a href="https://arxiv.org/format/2412.14235">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Fermion-Portal Dark Matter at a High-Energy Muon Collider </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Homiller%2C+S">Samuel Homiller</a>, <a href="/search/?searchtype=author&query=Radick%2C+A">Aria Radick</a>, <a href="/search/?searchtype=author&query=Yu%2C+T">Tien-Tien Yu</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2412.14235v1-abstract-short" style="display: inline;"> In this work, we provide a comprehensive study of fermion-portal dark matter models in the freeze-in regime at a future muon collider. For different possible non-singlet fermion portals, we calculate the upper bound on the mediator's mass arising from the relic abundance calculation and discuss the reach of a future muon collider in probing their viable parameter space in prompt and long-lived par… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.14235v1-abstract-full').style.display = 'inline'; document.getElementById('2412.14235v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.14235v1-abstract-full" style="display: none;"> In this work, we provide a comprehensive study of fermion-portal dark matter models in the freeze-in regime at a future muon collider. For different possible non-singlet fermion portals, we calculate the upper bound on the mediator's mass arising from the relic abundance calculation and discuss the reach of a future muon collider in probing their viable parameter space in prompt and long-lived particle search strategies. In particular, we develop rudimentary search strategies in the prompt region and show that cuts on the invariant dilepton or dijet masses, the missing transverse mass $M_{T2}$, pseudorapidity and energy of leptons or jets, and the opening angle between the lepton or the jet pair can be employed to subtract the Standard Model background. In the long-lived particle regime, we discuss the signals of each model and calculate their event counts. In this region, the lepton-(quark-)portal model signal consists of charged tracks ($R$-hadrons) that either decay in the detector to give rise to a displaced lepton (jet) signature, or are detector stable and give rise to heavy stable charged track signals. As a byproduct, a pipeline is developed for including the non-trivial parton distribution function of a muon component inside a muon beam; it is shown that this leads to non-trivial effects on the kinematic distributions and attainable significances. We also highlight phenomenological features of all models unique to a muon collider and hope our results, for this motivated and broad class of dark matter models, inform the design of a future muon collider detector. We also speculate on suggestions for improving the sensitivity of a muon collider detector to long-lived particle signals in fermion-portal models. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.14235v1-abstract-full').style.display = 'none'; document.getElementById('2412.14235v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">43 + 1 pages, 24 figures, 2 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.02966">arXiv:2411.02966</a> <span> [<a href="https://arxiv.org/pdf/2411.02966">pdf</a>, <a href="https://arxiv.org/format/2411.02966">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.5281/zenodo.13970100">10.5281/zenodo.13970100 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> MuCol Milestone Report No. 5: Preliminary Parameters </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Accettura%2C+C">Carlotta Accettura</a>, <a href="/search/?searchtype=author&query=Adrian%2C+S">Simon Adrian</a>, <a href="/search/?searchtype=author&query=Agarwal%2C+R">Rohit Agarwal</a>, <a href="/search/?searchtype=author&query=Ahdida%2C+C">Claudia Ahdida</a>, <a href="/search/?searchtype=author&query=Aim%C3%A9%2C+C">Chiara Aim茅</a>, <a href="/search/?searchtype=author&query=Aksoy%2C+A">Avni Aksoy</a>, <a href="/search/?searchtype=author&query=Alberghi%2C+G+L">Gian Luigi Alberghi</a>, <a href="/search/?searchtype=author&query=Alden%2C+S">Siobhan Alden</a>, <a href="/search/?searchtype=author&query=Alfonso%2C+L">Luca Alfonso</a>, <a href="/search/?searchtype=author&query=Amapane%2C+N">Nicola Amapane</a>, <a href="/search/?searchtype=author&query=Amorim%2C+D">David Amorim</a>, <a href="/search/?searchtype=author&query=Andreetto%2C+P">Paolo Andreetto</a>, <a href="/search/?searchtype=author&query=Anulli%2C+F">Fabio Anulli</a>, <a href="/search/?searchtype=author&query=Appleby%2C+R">Rob Appleby</a>, <a href="/search/?searchtype=author&query=Apresyan%2C+A">Artur Apresyan</a>, <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Mahmoud%2C+M+A">Mohammed Attia Mahmoud</a>, <a href="/search/?searchtype=author&query=Auchmann%2C+B">Bernhard Auchmann</a>, <a href="/search/?searchtype=author&query=Back%2C+J">John Back</a>, <a href="/search/?searchtype=author&query=Badea%2C+A">Anthony Badea</a>, <a href="/search/?searchtype=author&query=Bae%2C+K+J">Kyu Jung Bae</a>, <a href="/search/?searchtype=author&query=Bahng%2C+E+J">E. J. Bahng</a>, <a href="/search/?searchtype=author&query=Balconi%2C+L">Lorenzo Balconi</a>, <a href="/search/?searchtype=author&query=Balli%2C+F">Fabrice Balli</a>, <a href="/search/?searchtype=author&query=Bandiera%2C+L">Laura Bandiera</a> , et al. (369 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2411.02966v1-abstract-short" style="display: inline;"> This document is comprised of a collection of updated preliminary parameters for the key parts of the muon collider. The updated preliminary parameters follow on from the October 2023 Tentative Parameters Report. Particular attention has been given to regions of the facility that are believed to hold greater technical uncertainty in their design and that have a strong impact on the cost and power… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.02966v1-abstract-full').style.display = 'inline'; document.getElementById('2411.02966v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.02966v1-abstract-full" style="display: none;"> This document is comprised of a collection of updated preliminary parameters for the key parts of the muon collider. The updated preliminary parameters follow on from the October 2023 Tentative Parameters Report. Particular attention has been given to regions of the facility that are believed to hold greater technical uncertainty in their design and that have a strong impact on the cost and power consumption of the facility. The data is collected from a collaborative spreadsheet and transferred to overleaf. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.02966v1-abstract-full').style.display = 'none'; document.getElementById('2411.02966v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.23631">arXiv:2410.23631</a> <span> [<a href="https://arxiv.org/pdf/2410.23631">pdf</a>, <a href="https://arxiv.org/format/2410.23631">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> Direct Detection of Dark Baryons Naturally Suppressed by $\mathcal{H}$-parity </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Kribs%2C+G+D">Graham D. Kribs</a>, <a href="/search/?searchtype=author&query=Mantel%2C+C+J+H">Chester J. Hamilton Mantel</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2410.23631v1-abstract-short" style="display: inline;"> We identify symmetries in a broad class of vector-like confining dark sectors that forbid the leading electromagnetic moments that would ordinarily mediate dark baryon scattering with the Standard Model. The absence of these operators implies dark baryon dark matter has much smaller cross sections for elastic scattering off nuclei, leading to suppressed direct detection signals. In the confined de… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.23631v1-abstract-full').style.display = 'inline'; document.getElementById('2410.23631v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.23631v1-abstract-full" style="display: none;"> We identify symmetries in a broad class of vector-like confining dark sectors that forbid the leading electromagnetic moments that would ordinarily mediate dark baryon scattering with the Standard Model. The absence of these operators implies dark baryon dark matter has much smaller cross sections for elastic scattering off nuclei, leading to suppressed direct detection signals. In the confined description, we identify an ``$\mathcal{H}$-parity'' symmetry that exists in any dark sector with dark quarks transforming under a vector-like representation of a new confining SU($N_c$) gauge theory as well as a vector-like representation of the electroweak group SU(2)$_L$. The parity is independent of $N_c$ and $N_f$, though it is essential that the dark quarks are neutral under hypercharge. This parity forbids dark hadron electric and magnetic dipole moments, charge radius, and anapole moment, while permitting dimension-7 operators that include polarizability, electroweak loop-induced interactions, as well as lower dimensional electromagnetic $\textit{transition}$ moments between different neutral dark baryon states. We work out an explicit example, $N_c=N_f=3$, that is the most minimal theory with fermionic dark baryons. In this specific model, we use the non-relativistic quark model to show the magnetic dipole moment and charge radius vanish while the transition moments are non-zero, consistent with $\mathcal{H}$-parity. We discuss the implications of a suppressed direct detection signal, emphasizing that this broad class of models provide a well-motivated target for future colliders. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.23631v1-abstract-full').style.display = 'none'; document.getElementById('2410.23631v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">28+14 pages, 1+1 figures, 2 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2407.12450">arXiv:2407.12450</a> <span> [<a href="https://arxiv.org/pdf/2407.12450">pdf</a>, <a href="https://arxiv.org/format/2407.12450">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Interim report for the International Muon Collider Collaboration (IMCC) </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Accettura%2C+C">C. Accettura</a>, <a href="/search/?searchtype=author&query=Adrian%2C+S">S. Adrian</a>, <a href="/search/?searchtype=author&query=Agarwal%2C+R">R. Agarwal</a>, <a href="/search/?searchtype=author&query=Ahdida%2C+C">C. Ahdida</a>, <a href="/search/?searchtype=author&query=Aim%C3%A9%2C+C">C. Aim茅</a>, <a href="/search/?searchtype=author&query=Aksoy%2C+A">A. Aksoy</a>, <a href="/search/?searchtype=author&query=Alberghi%2C+G+L">G. L. Alberghi</a>, <a href="/search/?searchtype=author&query=Alden%2C+S">S. Alden</a>, <a href="/search/?searchtype=author&query=Amapane%2C+N">N. Amapane</a>, <a href="/search/?searchtype=author&query=Amorim%2C+D">D. Amorim</a>, <a href="/search/?searchtype=author&query=Andreetto%2C+P">P. Andreetto</a>, <a href="/search/?searchtype=author&query=Anulli%2C+F">F. Anulli</a>, <a href="/search/?searchtype=author&query=Appleby%2C+R">R. Appleby</a>, <a href="/search/?searchtype=author&query=Apresyan%2C+A">A. Apresyan</a>, <a href="/search/?searchtype=author&query=Asadi%2C+P">P. Asadi</a>, <a href="/search/?searchtype=author&query=Mahmoud%2C+M+A">M. Attia Mahmoud</a>, <a href="/search/?searchtype=author&query=Auchmann%2C+B">B. Auchmann</a>, <a href="/search/?searchtype=author&query=Back%2C+J">J. Back</a>, <a href="/search/?searchtype=author&query=Badea%2C+A">A. Badea</a>, <a href="/search/?searchtype=author&query=Bae%2C+K+J">K. J. Bae</a>, <a href="/search/?searchtype=author&query=Bahng%2C+E+J">E. J. Bahng</a>, <a href="/search/?searchtype=author&query=Balconi%2C+L">L. Balconi</a>, <a href="/search/?searchtype=author&query=Balli%2C+F">F. Balli</a>, <a href="/search/?searchtype=author&query=Bandiera%2C+L">L. Bandiera</a>, <a href="/search/?searchtype=author&query=Barbagallo%2C+C">C. Barbagallo</a> , et al. (362 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2407.12450v2-abstract-short" style="display: inline;"> The International Muon Collider Collaboration (IMCC) [1] was established in 2020 following the recommendations of the European Strategy for Particle Physics (ESPP) and the implementation of the European Strategy for Particle Physics-Accelerator R&D Roadmap by the Laboratory Directors Group [2], hereinafter referred to as the the European LDG roadmap. The Muon Collider Study (MuC) covers the accele… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.12450v2-abstract-full').style.display = 'inline'; document.getElementById('2407.12450v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2407.12450v2-abstract-full" style="display: none;"> The International Muon Collider Collaboration (IMCC) [1] was established in 2020 following the recommendations of the European Strategy for Particle Physics (ESPP) and the implementation of the European Strategy for Particle Physics-Accelerator R&D Roadmap by the Laboratory Directors Group [2], hereinafter referred to as the the European LDG roadmap. The Muon Collider Study (MuC) covers the accelerator complex, detectors and physics for a future muon collider. In 2023, European Commission support was obtained for a design study of a muon collider (MuCol) [3]. This project started on 1st March 2023, with work-packages aligned with the overall muon collider studies. In preparation of and during the 2021-22 U.S. Snowmass process, the muon collider project parameters, technical studies and physics performance studies were performed and presented in great detail. Recently, the P5 panel [4] in the U.S. recommended a muon collider R&D, proposed to join the IMCC and envisages that the U.S. should prepare to host a muon collider, calling this their "muon shot". In the past, the U.S. Muon Accelerator Programme (MAP) [5] has been instrumental in studies of concepts and technologies for a muon collider. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.12450v2-abstract-full').style.display = 'none'; document.getElementById('2407.12450v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">This document summarises the International Muon Collider Collaboration (IMCC) progress and status of the Muon Collider R&D programme</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2312.03826">arXiv:2312.03826</a> <span> [<a href="https://arxiv.org/pdf/2312.03826">pdf</a>, <a href="https://arxiv.org/format/2312.03826">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> A Duet of Freeze-in and Freeze-out: Lepton-Flavored Dark Matter and Muon Colliders </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Radick%2C+A">Aria Radick</a>, <a href="/search/?searchtype=author&query=Yu%2C+T">Tien-Tien Yu</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2312.03826v2-abstract-short" style="display: inline;"> We study a Lepton-Flavored Dark Matter model and its signatures at a future Muon Collider. We focus on the less-explored regime of feeble dark matter interactions, which suppresses the dangerous lepton-flavor violating processes, gives rise to dark matter freeze-in production, and leads to long-lived particle signatures at colliders. We find that the interplay of dark matter freeze-in and its medi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.03826v2-abstract-full').style.display = 'inline'; document.getElementById('2312.03826v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2312.03826v2-abstract-full" style="display: none;"> We study a Lepton-Flavored Dark Matter model and its signatures at a future Muon Collider. We focus on the less-explored regime of feeble dark matter interactions, which suppresses the dangerous lepton-flavor violating processes, gives rise to dark matter freeze-in production, and leads to long-lived particle signatures at colliders. We find that the interplay of dark matter freeze-in and its mediator freeze-out gives rise to an upper bound of around TeV scales on the dark matter mass. The signatures of this model depend on the lifetime of the mediator, and can range from generic prompt decays to more exotic long-lived particle signals. In the prompt region, we calculate the signal yield, study useful kinematics cuts, and report tolerable systematics that would allow for a $5蟽$ discovery. In the long-lived region, we calculate the number of charged tracks and displaced lepton signals of our model in different parts of the detector, and uncover kinematic features that can be used for background rejection. We show that, unlike in hadron colliders, multiple production channels contribute significantly which leads to sharply distinct kinematics for electroweakly-charged long-lived particle signals. Ultimately, the collider signatures of this lepton-flavored dark matter model are common amongst models of electroweak-charged new physics, rendering this model a useful and broadly applicable benchmark model for future Muon Collider studies that can help inform work on detector design and studies of systematics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.03826v2-abstract-full').style.display = 'none'; document.getElementById('2312.03826v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">36 + 9 pages, 18 + 8 figures. Code is available at https://github.com/ariaradick/LFDM_at_MuC</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2308.01340">arXiv:2308.01340</a> <span> [<a href="https://arxiv.org/pdf/2308.01340">pdf</a>, <a href="https://arxiv.org/format/2308.01340">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> Wrinkles in the Froggatt-Nielsen Mechanism and Flavorful New Physics </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Bhattacharya%2C+A">Arindam Bhattacharya</a>, <a href="/search/?searchtype=author&query=Fraser%2C+K">Katherine Fraser</a>, <a href="/search/?searchtype=author&query=Homiller%2C+S">Samuel Homiller</a>, <a href="/search/?searchtype=author&query=Parikh%2C+A">Aditya Parikh</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2308.01340v1-abstract-short" style="display: inline;"> When the Froggatt-Nielsen mechanism is used to explain the Standard Model flavor hierarchy, new physics couplings are also determined by the horizontal symmetry. However, additional symmetries or dynamics in the UV can sometimes lead to a departure from this na茂ve scaling for the new physics couplings. We show that an effective way to keep track of these changes is by using the new spurions of the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.01340v1-abstract-full').style.display = 'inline'; document.getElementById('2308.01340v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2308.01340v1-abstract-full" style="display: none;"> When the Froggatt-Nielsen mechanism is used to explain the Standard Model flavor hierarchy, new physics couplings are also determined by the horizontal symmetry. However, additional symmetries or dynamics in the UV can sometimes lead to a departure from this na茂ve scaling for the new physics couplings. We show that an effective way to keep track of these changes is by using the new spurions of the $\mathrm{U}(3)^5$ global flavor symmetry, where we parameterize extra suppression or enhancement factors, referred to as wrinkles, using the same power counting parameter as in the original Froggatt-Nielsen model. As a concrete realization, we consider two flavor spurions of the $S_1$ leptoquark, and demonstrate that wrinkles can be used to make an enhanced value of $\textrm{BR}(B^+ \to K^+谓\bar谓)$ consistent with other flavor observables. We also present example UV models that realize wrinkles, and comment on choosing consistent charges in ordinary Froggatt-Nielsen models without the typical monotonicity condition. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.01340v1-abstract-full').style.display = 'none'; document.getElementById('2308.01340v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">31 pages plus appendices, 9 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2303.08533">arXiv:2303.08533</a> <span> [<a href="https://arxiv.org/pdf/2303.08533">pdf</a>, <a href="https://arxiv.org/format/2303.08533">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> Towards a Muon Collider </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Accettura%2C+C">Carlotta Accettura</a>, <a href="/search/?searchtype=author&query=Adams%2C+D">Dean Adams</a>, <a href="/search/?searchtype=author&query=Agarwal%2C+R">Rohit Agarwal</a>, <a href="/search/?searchtype=author&query=Ahdida%2C+C">Claudia Ahdida</a>, <a href="/search/?searchtype=author&query=Aim%C3%A8%2C+C">Chiara Aim猫</a>, <a href="/search/?searchtype=author&query=Amapane%2C+N">Nicola Amapane</a>, <a href="/search/?searchtype=author&query=Amorim%2C+D">David Amorim</a>, <a href="/search/?searchtype=author&query=Andreetto%2C+P">Paolo Andreetto</a>, <a href="/search/?searchtype=author&query=Anulli%2C+F">Fabio Anulli</a>, <a href="/search/?searchtype=author&query=Appleby%2C+R">Robert Appleby</a>, <a href="/search/?searchtype=author&query=Apresyan%2C+A">Artur Apresyan</a>, <a href="/search/?searchtype=author&query=Apyan%2C+A">Aram Apyan</a>, <a href="/search/?searchtype=author&query=Arsenyev%2C+S">Sergey Arsenyev</a>, <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Mahmoud%2C+M+A">Mohammed Attia Mahmoud</a>, <a href="/search/?searchtype=author&query=Azatov%2C+A">Aleksandr Azatov</a>, <a href="/search/?searchtype=author&query=Back%2C+J">John Back</a>, <a href="/search/?searchtype=author&query=Balconi%2C+L">Lorenzo Balconi</a>, <a href="/search/?searchtype=author&query=Bandiera%2C+L">Laura Bandiera</a>, <a href="/search/?searchtype=author&query=Barlow%2C+R">Roger Barlow</a>, <a href="/search/?searchtype=author&query=Bartosik%2C+N">Nazar Bartosik</a>, <a href="/search/?searchtype=author&query=Barzi%2C+E">Emanuela Barzi</a>, <a href="/search/?searchtype=author&query=Batsch%2C+F">Fabian Batsch</a>, <a href="/search/?searchtype=author&query=Bauce%2C+M">Matteo Bauce</a>, <a href="/search/?searchtype=author&query=Berg%2C+J+S">J. Scott Berg</a> , et al. (272 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2303.08533v2-abstract-short" style="display: inline;"> A muon collider would enable the big jump ahead in energy reach that is needed for a fruitful exploration of fundamental interactions. The challenges of producing muon collisions at high luminosity and 10 TeV centre of mass energy are being investigated by the recently-formed International Muon Collider Collaboration. This Review summarises the status and the recent advances on muon colliders desi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.08533v2-abstract-full').style.display = 'inline'; document.getElementById('2303.08533v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2303.08533v2-abstract-full" style="display: none;"> A muon collider would enable the big jump ahead in energy reach that is needed for a fruitful exploration of fundamental interactions. The challenges of producing muon collisions at high luminosity and 10 TeV centre of mass energy are being investigated by the recently-formed International Muon Collider Collaboration. This Review summarises the status and the recent advances on muon colliders design, physics and detector studies. The aim is to provide a global perspective of the field and to outline directions for future work. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.08533v2-abstract-full').style.display = 'none'; document.getElementById('2303.08533v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 March, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">118 pages, 103 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2301.03611">arXiv:2301.03611</a> <span> [<a href="https://arxiv.org/pdf/2301.03611">pdf</a>, <a href="https://arxiv.org/format/2301.03611">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Theory">hep-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.108.014036">10.1103/PhysRevD.108.014036 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> 1+1D Hadrons Minimize their Biparton Renyi Free Energy </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Vaidya%2C+V">Varun Vaidya</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2301.03611v1-abstract-short" style="display: inline;"> We use a variational method to calculate the spectrum and the parton distribution function of ground state hadrons of various gauge theories in 1+1 dimensions. The template functions in our method minimize a free energy functional defined as a combination of free valence partons' kinetic energy on the lightcone and the Renyi entanglement entropy of biparton subsystems. Our results show that hadron… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.03611v1-abstract-full').style.display = 'inline'; document.getElementById('2301.03611v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2301.03611v1-abstract-full" style="display: none;"> We use a variational method to calculate the spectrum and the parton distribution function of ground state hadrons of various gauge theories in 1+1 dimensions. The template functions in our method minimize a free energy functional defined as a combination of free valence partons' kinetic energy on the lightcone and the Renyi entanglement entropy of biparton subsystems. Our results show that hadrons in these theories minimize the proposed free energy. The success of this technique motivates applying it to confining gauge theories in higher dimensions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.03611v1-abstract-full').style.display = 'none'; document.getElementById('2301.03611v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 January, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 two-column pages, 5 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2212.03882">arXiv:2212.03882</a> <span> [<a href="https://arxiv.org/pdf/2212.03882">pdf</a>, <a href="https://arxiv.org/format/2212.03882">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.107.115012">10.1103/PhysRevD.107.115012 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Chiral Nelson--Barr Models: Quality and Cosmology </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Homiller%2C+S">Samuel Homiller</a>, <a href="/search/?searchtype=author&query=Lu%2C+Q">Qianshu Lu</a>, <a href="/search/?searchtype=author&query=Reece%2C+M">Matthew Reece</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2212.03882v3-abstract-short" style="display: inline;"> It was recently shown that domain walls from the spontaneous breaking of CP symmetry are exactly stable, and must be inflated away to recover a viable cosmology. We investigate the phenomenological implications of this result in Nelson--Barr solutions of the strong CP problem. Combined with the upper bound on the scale of spontaneous CP breaking necessary to suppress contributions from dangerous,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.03882v3-abstract-full').style.display = 'inline'; document.getElementById('2212.03882v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2212.03882v3-abstract-full" style="display: none;"> It was recently shown that domain walls from the spontaneous breaking of CP symmetry are exactly stable, and must be inflated away to recover a viable cosmology. We investigate the phenomenological implications of this result in Nelson--Barr solutions of the strong CP problem. Combined with the upper bound on the scale of spontaneous CP breaking necessary to suppress contributions from dangerous, nonrenormalizable operators to $\bar胃$, this puts an upper bound on the scale of inflation and the reheating temperature after inflation. Minimal Nelson--Barr models are therefore in tension with thermal leptogenesis, models of large-field inflation, or potential future observations of signals from topological remnants of an unrelated, subsequent phase transition. We study how extending Nelson--Barr models with a new, continuous chiral gauge symmetry can ameliorate this tension by forbidding the dangerous dimension-five operators. In particular, we show that gauging a linear combination of baryon number and hypercharge allows for an economic, anomaly-free extension of the minimal Nelson--Barr model, and discuss the phenomenological implications. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.03882v3-abstract-full').style.display = 'none'; document.getElementById('2212.03882v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 June, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 7 December, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">23 pages + appendices, 2 figures. v3: matches published version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 107 (2023) 11, 115012 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2211.14333">arXiv:2211.14333</a> <span> [<a href="https://arxiv.org/pdf/2211.14333">pdf</a>, <a href="https://arxiv.org/format/2211.14333">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Theory">hep-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.107.054028">10.1103/PhysRevD.107.054028 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Quantum Entanglement and the Thermal Hadron </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Vaidya%2C+V">Varun Vaidya</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2211.14333v1-abstract-short" style="display: inline;"> This paper tests how effectively the bound states of strongly interacting gauge theories are amenable to an emergent description as a thermal ensemble. This description can be derived from a conjectured minimum free energy principle, with the entanglement entropy of two-parton subsystems playing the role of thermodynamic entropy. This allows us to calculate the ground state hadron spectrum and wav… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2211.14333v1-abstract-full').style.display = 'inline'; document.getElementById('2211.14333v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2211.14333v1-abstract-full" style="display: none;"> This paper tests how effectively the bound states of strongly interacting gauge theories are amenable to an emergent description as a thermal ensemble. This description can be derived from a conjectured minimum free energy principle, with the entanglement entropy of two-parton subsystems playing the role of thermodynamic entropy. This allows us to calculate the ground state hadron spectrum and wavefunction over a wide range of parton masses without solving the Schr枚dinger equation. We carry out this analysis for certain illustrative models in 1+1 dimensions and discuss prospects for higher dimensions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2211.14333v1-abstract-full').style.display = 'none'; document.getElementById('2211.14333v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 November, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">22 pages , 6 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2209.01318">arXiv:2209.01318</a> <span> [<a href="https://arxiv.org/pdf/2209.01318">pdf</a>, <a href="https://arxiv.org/format/2209.01318">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> Muon Collider Forum Report </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Black%2C+K+M">K. M. Black</a>, <a href="/search/?searchtype=author&query=Jindariani%2C+S">S. Jindariani</a>, <a href="/search/?searchtype=author&query=Li%2C+D">D. Li</a>, <a href="/search/?searchtype=author&query=Maltoni%2C+F">F. Maltoni</a>, <a href="/search/?searchtype=author&query=Meade%2C+P">P. Meade</a>, <a href="/search/?searchtype=author&query=Stratakis%2C+D">D. Stratakis</a>, <a href="/search/?searchtype=author&query=Acosta%2C+D">D. Acosta</a>, <a href="/search/?searchtype=author&query=Agarwal%2C+R">R. Agarwal</a>, <a href="/search/?searchtype=author&query=Agashe%2C+K">K. Agashe</a>, <a href="/search/?searchtype=author&query=Aime%2C+C">C. Aime</a>, <a href="/search/?searchtype=author&query=Ally%2C+D">D. Ally</a>, <a href="/search/?searchtype=author&query=Apresyan%2C+A">A. Apresyan</a>, <a href="/search/?searchtype=author&query=Apyan%2C+A">A. Apyan</a>, <a href="/search/?searchtype=author&query=Asadi%2C+P">P. Asadi</a>, <a href="/search/?searchtype=author&query=Athanasakos%2C+D">D. Athanasakos</a>, <a href="/search/?searchtype=author&query=Bao%2C+Y">Y. Bao</a>, <a href="/search/?searchtype=author&query=Barzi%2C+E">E. Barzi</a>, <a href="/search/?searchtype=author&query=Bartosik%2C+N">N. Bartosik</a>, <a href="/search/?searchtype=author&query=Bauerdick%2C+L+A+T">L. A. T. Bauerdick</a>, <a href="/search/?searchtype=author&query=Beacham%2C+J">J. Beacham</a>, <a href="/search/?searchtype=author&query=Belomestnykh%2C+S">S. Belomestnykh</a>, <a href="/search/?searchtype=author&query=Berg%2C+J+S">J. S. Berg</a>, <a href="/search/?searchtype=author&query=Berryhill%2C+J">J. Berryhill</a>, <a href="/search/?searchtype=author&query=Bertolin%2C+A">A. Bertolin</a>, <a href="/search/?searchtype=author&query=Bhat%2C+P+C">P. C. Bhat</a> , et al. (160 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2209.01318v3-abstract-short" style="display: inline;"> A multi-TeV muon collider offers a spectacular opportunity in the direct exploration of the energy frontier. Offering a combination of unprecedented energy collisions in a comparatively clean leptonic environment, a high energy muon collider has the unique potential to provide both precision measurements and the highest energy reach in one machine that cannot be paralleled by any currently availab… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.01318v3-abstract-full').style.display = 'inline'; document.getElementById('2209.01318v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2209.01318v3-abstract-full" style="display: none;"> A multi-TeV muon collider offers a spectacular opportunity in the direct exploration of the energy frontier. Offering a combination of unprecedented energy collisions in a comparatively clean leptonic environment, a high energy muon collider has the unique potential to provide both precision measurements and the highest energy reach in one machine that cannot be paralleled by any currently available technology. The topic generated a lot of excitement in Snowmass meetings and continues to attract a large number of supporters, including many from the early career community. In light of this very strong interest within the US particle physics community, Snowmass Energy, Theory and Accelerator Frontiers created a cross-frontier Muon Collider Forum in November of 2020. The Forum has been meeting on a monthly basis and organized several topical workshops dedicated to physics, accelerator technology, and detector R&D. Findings of the Forum are summarized in this report. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.01318v3-abstract-full').style.display = 'none'; document.getElementById('2209.01318v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2022. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2204.05283">arXiv:2204.05283</a> <span> [<a href="https://arxiv.org/pdf/2204.05283">pdf</a>, <a href="https://arxiv.org/format/2204.05283">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> Oblique Lessons from the $W$ Mass Measurement at CDF II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Cesarotti%2C+C">Cari Cesarotti</a>, <a href="/search/?searchtype=author&query=Fraser%2C+K">Katherine Fraser</a>, <a href="/search/?searchtype=author&query=Homiller%2C+S">Samuel Homiller</a>, <a href="/search/?searchtype=author&query=Parikh%2C+A">Aditya Parikh</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2204.05283v1-abstract-short" style="display: inline;"> The CDF collaboration recently reported a new precise measurement of the $W$ boson mass $M_W$ with a central value significantly larger than the SM prediction. We explore the effects of including this new measurement on a fit of the Standard Model (SM) to electroweak precision data. We characterize the tension of this new measurement with the SM and explore potential beyond the SM phenomena within… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2204.05283v1-abstract-full').style.display = 'inline'; document.getElementById('2204.05283v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2204.05283v1-abstract-full" style="display: none;"> The CDF collaboration recently reported a new precise measurement of the $W$ boson mass $M_W$ with a central value significantly larger than the SM prediction. We explore the effects of including this new measurement on a fit of the Standard Model (SM) to electroweak precision data. We characterize the tension of this new measurement with the SM and explore potential beyond the SM phenomena within the electroweak sector in terms of the oblique parameters $S$, $T$ and $U$. We show that the large $M_W$ value can be accommodated in the fit by a large, nonzero value of $U$, which is difficult to construct in explicit models. Assuming $U = 0$, the electroweak fit strongly prefers large, positive values of $T$. Finally, we study how the preferred values of the oblique parameters may be generated in the context of models affecting the electroweak sector at tree- and loop-level. In particular, we demonstrate that the preferred values of $T$ and $S$ can be generated with a real SU(2)$_L$ triplet scalar, the humble "swino," which can be heavy enough to evade current collider constraints, or by (multiple) species of a singlet-doublet fermion pair. We highlight challenges in constructing other simple models, such as a dark photon, for explaining a large $M_W$ value, and several directions for further study. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2204.05283v1-abstract-full').style.display = 'none'; document.getElementById('2204.05283v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 April, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">18 + 6 pages, 5 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> MIT-CTP/5420 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2203.15813">arXiv:2203.15813</a> <span> [<a href="https://arxiv.org/pdf/2203.15813">pdf</a>, <a href="https://arxiv.org/format/2203.15813">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Theory">hep-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP07(2022)006">10.1007/JHEP07(2022)006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Glueballs in a Thermal Squeezeout Model </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Kramer%2C+E+D">Eric David Kramer</a>, <a href="/search/?searchtype=author&query=Kuflik%2C+E">Eric Kuflik</a>, <a href="/search/?searchtype=author&query=Slatyer%2C+T+R">Tracy R. Slatyer</a>, <a href="/search/?searchtype=author&query=Smirnov%2C+J">Juri Smirnov</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2203.15813v2-abstract-short" style="display: inline;"> It has been shown that a first order confinement phase transition can drastically change the relic dark matter abundance in confining dark sectors with only heavy dark quarks. We study the phenomenology of one such model with a Z' portal to Standard Model. We find that dark glueballs are long-lived in this setup and dilute the dark matter abundance after their decay to Standard Model. With this ef… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.15813v2-abstract-full').style.display = 'inline'; document.getElementById('2203.15813v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.15813v2-abstract-full" style="display: none;"> It has been shown that a first order confinement phase transition can drastically change the relic dark matter abundance in confining dark sectors with only heavy dark quarks. We study the phenomenology of one such model with a Z' portal to Standard Model. We find that dark glueballs are long-lived in this setup and dilute the dark matter abundance after their decay to Standard Model. With this effect, the correct relic abundance is obtained with dark matter masses up to $\mathcal{O}(10^6)$~TeV. We find that while a part of the parameter space is already ruled out by direct detection and collider searches, there is still a broad space of viable scenarios that can be probed by future experiments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.15813v2-abstract-full').style.display = 'none'; document.getElementById('2203.15813v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 July, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 8 figures, and three Appendices on thermodynamics and Phase Transitions and heavier Glueball states. Version published in JHEP</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> MIT-CTP/5412 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Journal of High Energy Physics, 6, (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2203.07261">arXiv:2203.07261</a> <span> [<a href="https://arxiv.org/pdf/2203.07261">pdf</a>, <a href="https://arxiv.org/format/2203.07261">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> The physics case of a 3 TeV muon collider stage </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=De+Blas%2C+J">Jorge De Blas</a>, <a href="/search/?searchtype=author&query=Buttazzo%2C+D">Dario Buttazzo</a>, <a href="/search/?searchtype=author&query=Capdevilla%2C+R">Rodolfo Capdevilla</a>, <a href="/search/?searchtype=author&query=Curtin%2C+D">David Curtin</a>, <a href="/search/?searchtype=author&query=Franceschini%2C+R">Roberto Franceschini</a>, <a href="/search/?searchtype=author&query=Maltoni%2C+F">Fabio Maltoni</a>, <a href="/search/?searchtype=author&query=Meade%2C+P">Patrick Meade</a>, <a href="/search/?searchtype=author&query=Meloni%2C+F">Federico Meloni</a>, <a href="/search/?searchtype=author&query=Su%2C+S">Shufang Su</a>, <a href="/search/?searchtype=author&query=Vryonidou%2C+E">Eleni Vryonidou</a>, <a href="/search/?searchtype=author&query=Wulzer%2C+A">Andrea Wulzer</a>, <a href="/search/?searchtype=author&query=Aim%C3%A8%2C+C">Chiara Aim猫</a>, <a href="/search/?searchtype=author&query=Apyan%2C+A">Aram Apyan</a>, <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Mahmoud%2C+M+A">Mohammed Attia Mahmoud</a>, <a href="/search/?searchtype=author&query=Azatov%2C+A">Aleksandr Azatov</a>, <a href="/search/?searchtype=author&query=Bartosik%2C+N">Nazar Bartosik</a>, <a href="/search/?searchtype=author&query=Bertolin%2C+A">Alessandro Bertolin</a>, <a href="/search/?searchtype=author&query=Bottaro%2C+S">Salvatore Bottaro</a>, <a href="/search/?searchtype=author&query=Buonincontri%2C+L">Laura Buonincontri</a>, <a href="/search/?searchtype=author&query=Casarsa%2C+M">Massimo Casarsa</a>, <a href="/search/?searchtype=author&query=Castelli%2C+L">Luca Castelli</a>, <a href="/search/?searchtype=author&query=Catanesi%2C+M+G">Maria Gabriella Catanesi</a>, <a href="/search/?searchtype=author&query=Celiberto%2C+F+G">Francesco Giovanni Celiberto</a>, <a href="/search/?searchtype=author&query=Cerri%2C+A">Alessandro Cerri</a> , et al. (109 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2203.07261v2-abstract-short" style="display: inline;"> In the path towards a muon collider with center of mass energy of 10 TeV or more, a stage at 3 TeV emerges as an appealing option. Reviewing the physics potential of such muon collider is the main purpose of this document. In order to outline the progression of the physics performances across the stages, a few sensitivity projections for higher energy are also presented. There are many opportuniti… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.07261v2-abstract-full').style.display = 'inline'; document.getElementById('2203.07261v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.07261v2-abstract-full" style="display: none;"> In the path towards a muon collider with center of mass energy of 10 TeV or more, a stage at 3 TeV emerges as an appealing option. Reviewing the physics potential of such muon collider is the main purpose of this document. In order to outline the progression of the physics performances across the stages, a few sensitivity projections for higher energy are also presented. There are many opportunities for probing new physics at a 3 TeV muon collider. Some of them are in common with the extensively documented physics case of the CLIC 3 TeV energy stage, and include measuring the Higgs trilinear coupling and testing the possible composite nature of the Higgs boson and of the top quark at the 20 TeV scale. Other opportunities are unique of a 3 TeV muon collider, and stem from the fact that muons are collided rather than electrons. This is exemplified by studying the potential to explore the microscopic origin of the current $g$-2 and $B$-physics anomalies, which are both related with muons. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.07261v2-abstract-full').style.display = 'none'; document.getElementById('2203.07261v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 May, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">73 pages, 28 figures; Contribution to Snowmass 2021</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2203.06680">arXiv:2203.06680</a> <span> [<a href="https://arxiv.org/pdf/2203.06680">pdf</a>, <a href="https://arxiv.org/format/2203.06680">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> </div> </div> <p class="title is-5 mathjax"> Early-Universe Model Building </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Bansal%2C+S">Saurabh Bansal</a>, <a href="/search/?searchtype=author&query=Berlin%2C+A">Asher Berlin</a>, <a href="/search/?searchtype=author&query=Co%2C+R+T">Raymond T. Co</a>, <a href="/search/?searchtype=author&query=Croon%2C+D">Djuna Croon</a>, <a href="/search/?searchtype=author&query=Cui%2C+Y">Yanou Cui</a>, <a href="/search/?searchtype=author&query=Curtin%2C+D">David Curtin</a>, <a href="/search/?searchtype=author&query=Cyr-Racine%2C+F">Francis-Yan Cyr-Racine</a>, <a href="/search/?searchtype=author&query=Davoudiasl%2C+H">Hooman Davoudiasl</a>, <a href="/search/?searchtype=author&query=Rose%2C+L+D">Luigi Delle Rose</a>, <a href="/search/?searchtype=author&query=Drewes%2C+M">Marco Drewes</a>, <a href="/search/?searchtype=author&query=Dror%2C+J+A">Jeff A. Dror</a>, <a href="/search/?searchtype=author&query=Elor%2C+G">Gilly Elor</a>, <a href="/search/?searchtype=author&query=Gould%2C+O">Oliver Gould</a>, <a href="/search/?searchtype=author&query=Harigaya%2C+K">Keisuke Harigaya</a>, <a href="/search/?searchtype=author&query=Heeba%2C+S">Saniya Heeba</a>, <a href="/search/?searchtype=author&query=Hochberg%2C+Y">Yonit Hochberg</a>, <a href="/search/?searchtype=author&query=Hook%2C+A">Anson Hook</a>, <a href="/search/?searchtype=author&query=Ipek%2C+S">Seyda Ipek</a>, <a href="/search/?searchtype=author&query=Kuflik%2C+E">Eric Kuflik</a>, <a href="/search/?searchtype=author&query=Long%2C+A+J">Andrew J. Long</a>, <a href="/search/?searchtype=author&query=McGehee%2C+R">Robert McGehee</a>, <a href="/search/?searchtype=author&query=Outmezguine%2C+N+J">Nadav Joseph Outmezguine</a>, <a href="/search/?searchtype=author&query=Panico%2C+G">Giuliano Panico</a>, <a href="/search/?searchtype=author&query=Poulin%2C+V">Vivian Poulin</a> , et al. (15 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2203.06680v2-abstract-short" style="display: inline;"> Theoretical investigations into the evolution of the early universe are an essential part of particle physics that allow us to identify viable extensions to the Standard Model as well as motivated parameter space that can be probed by various experiments and observations. In this white paper, we review particle physics models of the early universe. First, we outline various models that explain two… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.06680v2-abstract-full').style.display = 'inline'; document.getElementById('2203.06680v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.06680v2-abstract-full" style="display: none;"> Theoretical investigations into the evolution of the early universe are an essential part of particle physics that allow us to identify viable extensions to the Standard Model as well as motivated parameter space that can be probed by various experiments and observations. In this white paper, we review particle physics models of the early universe. First, we outline various models that explain two essential ingredients of the early universe (dark matter and baryon asymmetry) and those that seek to address current observational anomalies. We then discuss dynamics of the early universe in models of neutrino masses, axions, and several solutions to the electroweak hierarchy problem. Finally, we review solutions to naturalness problems of the Standard Model that employ cosmological dynamics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.06680v2-abstract-full').style.display = 'none'; document.getElementById('2203.06680v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">contribution to Snowmass 2021</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2203.02309">arXiv:2203.02309</a> <span> [<a href="https://arxiv.org/pdf/2203.02309">pdf</a>, <a href="https://arxiv.org/format/2203.02309">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1361-6471/ac841a">10.1088/1361-6471/ac841a <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A Next-Generation Liquid Xenon Observatory for Dark Matter and Neutrino Physics </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Aalbers%2C+J">J. Aalbers</a>, <a href="/search/?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/?searchtype=author&query=Aerne%2C+V">V. Aerne</a>, <a href="/search/?searchtype=author&query=Agostini%2C+F">F. Agostini</a>, <a href="/search/?searchtype=author&query=Maouloud%2C+S+A">S. Ahmed Maouloud</a>, <a href="/search/?searchtype=author&query=Akerib%2C+D+S">D. S. Akerib</a>, <a href="/search/?searchtype=author&query=Akimov%2C+D+Y">D. Yu. Akimov</a>, <a href="/search/?searchtype=author&query=Akshat%2C+J">J. Akshat</a>, <a href="/search/?searchtype=author&query=Musalhi%2C+A+K+A">A. K. Al Musalhi</a>, <a href="/search/?searchtype=author&query=Alder%2C+F">F. Alder</a>, <a href="/search/?searchtype=author&query=Alsum%2C+S+K">S. K. Alsum</a>, <a href="/search/?searchtype=author&query=Althueser%2C+L">L. Althueser</a>, <a href="/search/?searchtype=author&query=Amarasinghe%2C+C+S">C. S. Amarasinghe</a>, <a href="/search/?searchtype=author&query=Amaro%2C+F+D">F. D. Amaro</a>, <a href="/search/?searchtype=author&query=Ames%2C+A">A. Ames</a>, <a href="/search/?searchtype=author&query=Anderson%2C+T+J">T. J. Anderson</a>, <a href="/search/?searchtype=author&query=Andrieu%2C+B">B. Andrieu</a>, <a href="/search/?searchtype=author&query=Angelides%2C+N">N. Angelides</a>, <a href="/search/?searchtype=author&query=Angelino%2C+E">E. Angelino</a>, <a href="/search/?searchtype=author&query=Angevaare%2C+J">J. Angevaare</a>, <a href="/search/?searchtype=author&query=Antochi%2C+V+C">V. C. Antochi</a>, <a href="/search/?searchtype=author&query=Martin%2C+D+A">D. Ant贸n Martin</a>, <a href="/search/?searchtype=author&query=Antunovic%2C+B">B. Antunovic</a>, <a href="/search/?searchtype=author&query=Aprile%2C+E">E. Aprile</a>, <a href="/search/?searchtype=author&query=Ara%C3%BAjo%2C+H+M">H. M. Ara煤jo</a> , et al. (572 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2203.02309v1-abstract-short" style="display: inline;"> The nature of dark matter and properties of neutrinos are among the most pressing issues in contemporary particle physics. The dual-phase xenon time-projection chamber is the leading technology to cover the available parameter space for Weakly Interacting Massive Particles (WIMPs), while featuring extensive sensitivity to many alternative dark matter candidates. These detectors can also study neut… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.02309v1-abstract-full').style.display = 'inline'; document.getElementById('2203.02309v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.02309v1-abstract-full" style="display: none;"> The nature of dark matter and properties of neutrinos are among the most pressing issues in contemporary particle physics. The dual-phase xenon time-projection chamber is the leading technology to cover the available parameter space for Weakly Interacting Massive Particles (WIMPs), while featuring extensive sensitivity to many alternative dark matter candidates. These detectors can also study neutrinos through neutrinoless double-beta decay and through a variety of astrophysical sources. A next-generation xenon-based detector will therefore be a true multi-purpose observatory to significantly advance particle physics, nuclear physics, astrophysics, solar physics, and cosmology. This review article presents the science cases for such a detector. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.02309v1-abstract-full').style.display = 'none'; document.getElementById('2203.02309v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">77 pages, 40 figures, 1262 references</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> INT-PUB-22-003 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> J. Phys. G: Nucl. Part. Phys. 50 (2023) 013001 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2111.11444">arXiv:2111.11444</a> <span> [<a href="https://arxiv.org/pdf/2111.11444">pdf</a>, <a href="https://arxiv.org/format/2111.11444">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Theory">hep-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.106.015012">10.1103/PhysRevD.106.015012 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> WIMPs Without Weakness: Generalized Mass Window with Entropy Injection </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Slatyer%2C+T+R">Tracy R. Slatyer</a>, <a href="/search/?searchtype=author&query=Smirnov%2C+J">Juri Smirnov</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2111.11444v1-abstract-short" style="display: inline;"> We study general freeze-out scenarios where an arbitrary number of initial and final dark matter particles participate in the number-changing freeze-out interaction. We consider a simple sector with two particle species undergoing such a thermal freeze-out; one of the relics is stable and gives rise to the dark matter today, while the other one decays to the Standard Model, injecting significant e… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.11444v1-abstract-full').style.display = 'inline'; document.getElementById('2111.11444v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2111.11444v1-abstract-full" style="display: none;"> We study general freeze-out scenarios where an arbitrary number of initial and final dark matter particles participate in the number-changing freeze-out interaction. We consider a simple sector with two particle species undergoing such a thermal freeze-out; one of the relics is stable and gives rise to the dark matter today, while the other one decays to the Standard Model, injecting significant entropy into the thermal bath that dilutes the dark matter abundance. We show that this setup can lead to a stable relic population that reproduces the observed dark matter abundance without requiring weak scale masses or couplings. The final dark matter abundance is estimated analytically. We carry out this calculation for arbitrary temperature dependence in the freeze-out process and identify the viable dark matter mass and cross section ranges that explain the observed dark matter abundance. This setup can be used to open parameter space for both heavy (above the unitarity bound) or light (sub-GeV) dark matter candidates. We point out that the best strategy for probing most parts of our parameter space is to look for signatures of an early matter-dominant epoch. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.11444v1-abstract-full').style.display = 'none'; document.getElementById('2111.11444v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 November, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9 pages and technical appendices</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> MIT-CTP/5361 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2104.05720">arXiv:2104.05720</a> <span> [<a href="https://arxiv.org/pdf/2104.05720">pdf</a>, <a href="https://arxiv.org/format/2104.05720">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP10(2021)182">10.1007/JHEP10(2021)182 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Searching for Leptoquarks at Future Muon Colliders </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Capdevilla%2C+R">Rodolfo Capdevilla</a>, <a href="/search/?searchtype=author&query=Cesarotti%2C+C">Cari Cesarotti</a>, <a href="/search/?searchtype=author&query=Homiller%2C+S">Samuel Homiller</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2104.05720v1-abstract-short" style="display: inline;"> A high energy muon collider can provide new and complementary discovery potential to the LHC or future hadron colliders. Leptoquarks are a motivated class of exotic new physics models, with distinct production channels at hadron and lepton machines. We study a vector leptoquark model at a muon collider with $\sqrt{s} = 3, 14$ TeV within a set of both UV and phenomenologically motivated flavor scen… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.05720v1-abstract-full').style.display = 'inline'; document.getElementById('2104.05720v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2104.05720v1-abstract-full" style="display: none;"> A high energy muon collider can provide new and complementary discovery potential to the LHC or future hadron colliders. Leptoquarks are a motivated class of exotic new physics models, with distinct production channels at hadron and lepton machines. We study a vector leptoquark model at a muon collider with $\sqrt{s} = 3, 14$ TeV within a set of both UV and phenomenologically motivated flavor scenarios. We compute which production mechanism has the greatest reach for various values of the leptoquark mass and the coupling between leptoquark and Standard Model fermions. We find that we can probe leptoquark masses up to an order of magnitude beyond $\sqrt{s}$ with perturbative couplings. Additionally, we can also probe regions of parameter space unavailable to flavor experiments. In particular, all of the parameter space of interest to explain recent low-energy anomalies in B meson decays would be covered even by a $\sqrt{s} = 3$ TeV collider. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.05720v1-abstract-full').style.display = 'none'; document.getElementById('2104.05720v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 April, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">21+11 pages, 16 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> MIT-CTP/5296 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2104.02679">arXiv:2104.02679</a> <span> [<a href="https://arxiv.org/pdf/2104.02679">pdf</a>, <a href="https://arxiv.org/format/2104.02679">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP09(2021)031">10.1007/JHEP09(2021)031 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Spontaneous CP Violation and Horizontal Symmetry in the MSSM: Toward Lepton Flavor Naturalness </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Aloni%2C+D">Daniel Aloni</a>, <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Nakai%2C+Y">Yuichiro Nakai</a>, <a href="/search/?searchtype=author&query=Reece%2C+M">Matthew Reece</a>, <a href="/search/?searchtype=author&query=Suzuki%2C+M">Motoo Suzuki</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2104.02679v2-abstract-short" style="display: inline;"> We study the contributions of supersymmetric models with a $U(1)$ horizontal symmetry and only spontaneous CP breaking to various lepton flavor observables, such as $渭\to e纬$ and the electron electric dipole moment. We show that both a horizontal symmetry and a lack of explicit CP violation can alleviate the existing bounds from such observables. The undetermined $\mathcal{O}(1)$ coefficients in s… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.02679v2-abstract-full').style.display = 'inline'; document.getElementById('2104.02679v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2104.02679v2-abstract-full" style="display: none;"> We study the contributions of supersymmetric models with a $U(1)$ horizontal symmetry and only spontaneous CP breaking to various lepton flavor observables, such as $渭\to e纬$ and the electron electric dipole moment. We show that both a horizontal symmetry and a lack of explicit CP violation can alleviate the existing bounds from such observables. The undetermined $\mathcal{O}(1)$ coefficients in such mass matrix models muddle the interpretation of the bounds from various flavor observables. To overcome this, we define a new fine-tuning measure for different observables in such setups. This allows us to study how naturally the observed IR flavor observables can emerge from a given mass matrix model. We use our flavor-naturalness measure in study of our supersymmetric models and quantify the degree of fine tuning required by the bounds from various lepton flavor observables at each mass scale of sleptons, neutralinos, and charginos. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.02679v2-abstract-full').style.display = 'none'; document.getElementById('2104.02679v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 August, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 April, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Minor changes to how random numbers are generated. Conclusions unchanged. Version published in JHEP. 31+18 Pages. 9 Figures. 6 Tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> MIT-CTP/5294 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> https://link.springer.com/article/10.1007/JHEP09(2021)031 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2103.09827">arXiv:2103.09827</a> <span> [<a href="https://arxiv.org/pdf/2103.09827">pdf</a>, <a href="https://arxiv.org/format/2103.09827">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.104.095013">10.1103/PhysRevD.104.095013 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Thermal Squeezeout of Dark Matter </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Kramer%2C+E+D">Eric David Kramer</a>, <a href="/search/?searchtype=author&query=Kuflik%2C+E">Eric Kuflik</a>, <a href="/search/?searchtype=author&query=Ridgway%2C+G+W">Gregory W. Ridgway</a>, <a href="/search/?searchtype=author&query=Slatyer%2C+T+R">Tracy R. Slatyer</a>, <a href="/search/?searchtype=author&query=Smirnov%2C+J">Juri Smirnov</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2103.09827v2-abstract-short" style="display: inline;"> We carry out a detailed study of the confinement phase transition in a dark sector with a $SU(N)$ gauge group and a single generation of dark heavy quark. We focus on heavy enough quarks such that their abundance freezes out before the phase transition and the phase transition is of first-order. We find that during this phase transition the quarks are trapped inside contracting pockets of the deco… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.09827v2-abstract-full').style.display = 'inline'; document.getElementById('2103.09827v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2103.09827v2-abstract-full" style="display: none;"> We carry out a detailed study of the confinement phase transition in a dark sector with a $SU(N)$ gauge group and a single generation of dark heavy quark. We focus on heavy enough quarks such that their abundance freezes out before the phase transition and the phase transition is of first-order. We find that during this phase transition the quarks are trapped inside contracting pockets of the deconfined phase and are compressed enough to interact at a significant rate, giving rise to a second stage of annihilation that can dramatically change the resulting dark matter abundance. As a result, the dark matter can be heavier than the often-quoted unitarity bound of $\sim100~$TeV. Our findings are almost completely independent of the details of the portal between the dark sector and the Standard Model. We comment briefly on possible signals of such a sector. Our main findings are summarized in a companion letter, while here we provide further details on different parts of the calculation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.09827v2-abstract-full').style.display = 'none'; document.getElementById('2103.09827v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 April, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">38+30 pages, 14 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2103.09822">arXiv:2103.09822</a> <span> [<a href="https://arxiv.org/pdf/2103.09822">pdf</a>, <a href="https://arxiv.org/format/2103.09822">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.127.211101">10.1103/PhysRevLett.127.211101 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Accidentally Asymmetric Dark Matter </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Kramer%2C+E+D">Eric David Kramer</a>, <a href="/search/?searchtype=author&query=Kuflik%2C+E">Eric Kuflik</a>, <a href="/search/?searchtype=author&query=Ridgway%2C+G+W">Gregory W. Ridgway</a>, <a href="/search/?searchtype=author&query=Slatyer%2C+T+R">Tracy R. Slatyer</a>, <a href="/search/?searchtype=author&query=Smirnov%2C+J">Juri Smirnov</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2103.09822v1-abstract-short" style="display: inline;"> We study the effect of a first-order phase transition in a confining $SU(N)$ dark sector with heavy dark quarks. The baryons of this sector are the dark matter candidate. During the confinement phase transition the heavy quarks are trapped inside isolated, contracting pockets of the deconfined phase, giving rise to a second stage of annihilation that dramatically suppresses the dark quark abundanc… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.09822v1-abstract-full').style.display = 'inline'; document.getElementById('2103.09822v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2103.09822v1-abstract-full" style="display: none;"> We study the effect of a first-order phase transition in a confining $SU(N)$ dark sector with heavy dark quarks. The baryons of this sector are the dark matter candidate. During the confinement phase transition the heavy quarks are trapped inside isolated, contracting pockets of the deconfined phase, giving rise to a second stage of annihilation that dramatically suppresses the dark quark abundance. The surviving abundance is determined by the local accidental asymmetry in each pocket. The correct dark matter abundance is obtained for $\mathcal{O}(1-100)$ PeV dark quarks, above the usual unitarity bound. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.09822v1-abstract-full').style.display = 'none'; document.getElementById('2103.09822v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 3 figures, comments are welcomed</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> MIT-CTP/5284 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2006.16416">arXiv:2006.16416</a> <span> [<a href="https://arxiv.org/pdf/2006.16416">pdf</a>, <a href="https://arxiv.org/format/2006.16416">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.102.095028">10.1103/PhysRevD.102.095028 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A Complete Framework for Tau Polarimetry in $B\to D^{(*)}蟿谓$ Decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Hallin%2C+A">Anna Hallin</a>, <a href="/search/?searchtype=author&query=Camalich%2C+J+M">Jorge Martin Camalich</a>, <a href="/search/?searchtype=author&query=Shih%2C+D">David Shih</a>, <a href="/search/?searchtype=author&query=Westhoff%2C+S">Susanne Westhoff</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2006.16416v1-abstract-short" style="display: inline;"> The meson decays $B\to D蟿谓$ and $B\to D^* 蟿谓$ are sensitive probes of the $b\to c蟿谓$ transition. In this work we present a complete framework to obtain the maximum information on the physics of $B\to D^{(*)}蟿谓$ with polarized $蟿$ leptons and unpolarized $D^{(*)}$ mesons. Focusing on the hadronic decays $蟿\to 蟺谓$ and $蟿\to蟻谓$, we show how to extract seven $蟿$ asymmetries from a fully differential a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2006.16416v1-abstract-full').style.display = 'inline'; document.getElementById('2006.16416v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2006.16416v1-abstract-full" style="display: none;"> The meson decays $B\to D蟿谓$ and $B\to D^* 蟿谓$ are sensitive probes of the $b\to c蟿谓$ transition. In this work we present a complete framework to obtain the maximum information on the physics of $B\to D^{(*)}蟿谓$ with polarized $蟿$ leptons and unpolarized $D^{(*)}$ mesons. Focusing on the hadronic decays $蟿\to 蟺谓$ and $蟿\to蟻谓$, we show how to extract seven $蟿$ asymmetries from a fully differential analysis of the final-state kinematics. At Belle II with $50~\text{ab}^{-1}$ of data, these asymmetries could potentially be measured with percent level statistical uncertainty. This would open a new window into possible new physics contributions in $b\to c蟿谓$ and would allow us to decipher its Lorentz and gauge structure. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2006.16416v1-abstract-full').style.display = 'none'; document.getElementById('2006.16416v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 June, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">20 pages + appendices, 5 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1905.03311">arXiv:1905.03311</a> <span> [<a href="https://arxiv.org/pdf/1905.03311">pdf</a>, <a href="https://arxiv.org/format/1905.03311">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.100.115013">10.1103/PhysRevD.100.115013 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Maximizing the Impact of New Physics in $b\rightarrow c 蟿谓$ Anomalies </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Shih%2C+D">David Shih</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1905.03311v1-abstract-short" style="display: inline;"> We develop a rigorous, semi-analytical method for maximizing any $b\to c蟿谓$ observable in the full 20-real-dimensional parameter space of the dimension 6 effective Hamiltonian, given some fixed values of $R_{D^{(*)}}$. We apply our method to find the maximum allowed values of $F^L_{D^*}$ and $R_{J/蠄}$, two observables which have both come out higher than their SM predictions in recent measurements… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.03311v1-abstract-full').style.display = 'inline'; document.getElementById('1905.03311v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1905.03311v1-abstract-full" style="display: none;"> We develop a rigorous, semi-analytical method for maximizing any $b\to c蟿谓$ observable in the full 20-real-dimensional parameter space of the dimension 6 effective Hamiltonian, given some fixed values of $R_{D^{(*)}}$. We apply our method to find the maximum allowed values of $F^L_{D^*}$ and $R_{J/蠄}$, two observables which have both come out higher than their SM predictions in recent measurements by the Belle and LHCb collaborations. While the measurements still have large error bars, they add to the existing $R_{D^{(*)}}$ anomaly, and it is worthwhile to consider NP explanations. It has been shown that none of the existing, minimal models in the literature can explain the observed values of $F^L_{D^*}$ and $R_{J/蠄}$. Using our method, we will generalize beyond the minimal models and show that there is no combination of dimension 6 Wilson operators that can come within $1蟽$ of the observed $R_{J/蠄}$ value. By contrast, we will show that the observed value of $F^L_{D^*}$ can be achieved, but only with sizable contributions from tensor and mixed-chirality vector Wilson coefficients. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.03311v1-abstract-full').style.display = 'none'; document.getElementById('1905.03311v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 May, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">18 pages, 3 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 100, 115013 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1810.09467">arXiv:1810.09467</a> <span> [<a href="https://arxiv.org/pdf/1810.09467">pdf</a>, <a href="https://arxiv.org/format/1810.09467">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP02(2019)138">10.1007/JHEP02(2019)138 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Twin Turtles </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Craig%2C+N">Nathaniel Craig</a>, <a href="/search/?searchtype=author&query=Li%2C+Y">Ying-Ying Li</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1810.09467v1-abstract-short" style="display: inline;"> We present an ultraviolet extension of the Twin Higgs in which the radial mode of twin symmetry breaking is itself a pseudo-goldstone boson. This "turtle" structure raises the scale of new colored particles in exchange for additional states in the Higgs sector, making multiple Higgs-like scalars the definitive signature of naturalness in this context. We explore the parametrics and phenomenology o… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.09467v1-abstract-full').style.display = 'inline'; document.getElementById('1810.09467v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1810.09467v1-abstract-full" style="display: none;"> We present an ultraviolet extension of the Twin Higgs in which the radial mode of twin symmetry breaking is itself a pseudo-goldstone boson. This "turtle" structure raises the scale of new colored particles in exchange for additional states in the Higgs sector, making multiple Higgs-like scalars the definitive signature of naturalness in this context. We explore the parametrics and phenomenology of a concrete Twin Turtle model and demonstrate its robustness in two different supersymmetric completions. Along the way, we also introduce a new mechanism for inducing hard twin symmetry-breaking quartics via soft supersymmetry breaking. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.09467v1-abstract-full').style.display = 'none'; document.getElementById('1810.09467v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 October, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">36 pages, 13 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1810.06597">arXiv:1810.06597</a> <span> [<a href="https://arxiv.org/pdf/1810.06597">pdf</a>, <a href="https://arxiv.org/format/1810.06597">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.99.035015">10.1103/PhysRevD.99.035015 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Asymmetry Observables and the Origin of $R_{D^{(*)}}$ Anomalies </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Buckley%2C+M+R">Matthew R. Buckley</a>, <a href="/search/?searchtype=author&query=Shih%2C+D">David Shih</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1810.06597v2-abstract-short" style="display: inline;"> The $R_{D^{(*)}}$ anomalies are among the longest-standing and most statistically significant hints of physics beyond the Standard Model. Many models have been proposed to explain these anomalies, including the interesting possibility that right-handed neutrinos could be involved in the $B$ decays. In this paper, we investigate future measurements at Belle II that can be used to tell apart the var… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.06597v2-abstract-full').style.display = 'inline'; document.getElementById('1810.06597v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1810.06597v2-abstract-full" style="display: none;"> The $R_{D^{(*)}}$ anomalies are among the longest-standing and most statistically significant hints of physics beyond the Standard Model. Many models have been proposed to explain these anomalies, including the interesting possibility that right-handed neutrinos could be involved in the $B$ decays. In this paper, we investigate future measurements at Belle II that can be used to tell apart the various new physics scenarios. Focusing on a number of $蟿$ asymmetry observables (forward-backward asymmetry and polarization asymmetries) which can be reconstructed at Belle II, we calculate the contribution of the most general dimension 6 effective Hamiltonian (including right-handed neutrinos) to all of these asymmetries. We show that Belle II can use these asymmetries to distinguish between new-physics scenarios that use right- and left-handed neutrinos, and in most cases can likely distinguish the specific model itself. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.06597v2-abstract-full').style.display = 'none'; document.getElementById('1810.06597v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 January, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 October, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">28 pages+appendices, 10 figures. v2: typos fixed, references added, some constraints and the list of viable models updated</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 99, 035015 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1804.04135">arXiv:1804.04135</a> <span> [<a href="https://arxiv.org/pdf/1804.04135">pdf</a>, <a href="https://arxiv.org/format/1804.04135">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP09(2018)010">10.1007/JHEP09(2018)010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> It's all right(-handed neutrinos): a new $W'$ model for the $R_{D^{(*)}}$ anomaly </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Buckley%2C+M+R">Matthew R. Buckley</a>, <a href="/search/?searchtype=author&query=Shih%2C+D">David Shih</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1804.04135v2-abstract-short" style="display: inline;"> The measured $B$-meson semi-leptonic branching ratios $R_{D}$ and $R_{D^*}$ have long-standing deviations between theory and experiment. We introduce a model which explains both anomalies through a single interaction by introducing a right-handed neutrino as the missing energy particle. This interaction is mediated by a heavy charged vector boson ($W'$) which couples only to right-handed quarks an… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1804.04135v2-abstract-full').style.display = 'inline'; document.getElementById('1804.04135v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1804.04135v2-abstract-full" style="display: none;"> The measured $B$-meson semi-leptonic branching ratios $R_{D}$ and $R_{D^*}$ have long-standing deviations between theory and experiment. We introduce a model which explains both anomalies through a single interaction by introducing a right-handed neutrino as the missing energy particle. This interaction is mediated by a heavy charged vector boson ($W'$) which couples only to right-handed quarks and leptons of the Standard Model through the mixing of these particles with new vector-like fermions. Previous $W'$ models for the $R_{D^{(*)}}$ anomaly were strongly constrained from flavor changing neutral currents and direct collider searches for $Z'\to蟿蟿$ resonances. We show that relying on right-handed fermion mixing enables us to avoid these constraints, as well as other severe bounds from electroweak precision tests and neutrino mixing. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1804.04135v2-abstract-full').style.display = 'none'; document.getElementById('1804.04135v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 January, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 April, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">24 pages + appendix, 5 figures. v2: typos fixed, references added, minor updates, conclusions unchanged</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1712.04939">arXiv:1712.04939</a> <span> [<a href="https://arxiv.org/pdf/1712.04939">pdf</a>, <a href="https://arxiv.org/format/1712.04939">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP03(2018)130">10.1007/JHEP03(2018)130 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> An Update on the LHC Monojet Excess </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Buckley%2C+M+R">Matthew R. Buckley</a>, <a href="/search/?searchtype=author&query=DiFranzo%2C+A">Anthony DiFranzo</a>, <a href="/search/?searchtype=author&query=Monteux%2C+A">Angelo Monteux</a>, <a href="/search/?searchtype=author&query=Shih%2C+D">David Shih</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1712.04939v1-abstract-short" style="display: inline;"> In previous work, we identified an anomalous number of events in the LHC jets+MET searches characterized by low jet multiplicity and low-to-moderate transverse energy variables. Here, we update this analysis with results from a new ATLAS search in the monojet channel which also shows a consistent excess. As before, we find that this "monojet excess" is well-described by the resonant production of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1712.04939v1-abstract-full').style.display = 'inline'; document.getElementById('1712.04939v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1712.04939v1-abstract-full" style="display: none;"> In previous work, we identified an anomalous number of events in the LHC jets+MET searches characterized by low jet multiplicity and low-to-moderate transverse energy variables. Here, we update this analysis with results from a new ATLAS search in the monojet channel which also shows a consistent excess. As before, we find that this "monojet excess" is well-described by the resonant production of a heavy colored state decaying to a quark and a massive invisible particle. In the combined ATLAS and CMS data, we now find a local (global) preference of 3.3$蟽$ (2.5$蟽$) for the new physics model over the Standard Model-only hypothesis. As the signal regions containing the excess are systematics-limited, we consider additional cuts to enhance the signal-to-background ratio. We show that binning finer in $H_T$ and requiring the jets to be more central can increase $S/B$ by a factor of ${\sim} 1.5$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1712.04939v1-abstract-full').style.display = 'none'; document.getElementById('1712.04939v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 December, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 5 figures, source for analysis code used in this paper in attached Ancillary files</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> UCI-HEP-TR-2017-16 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1707.05783">arXiv:1707.05783</a> <span> [<a href="https://arxiv.org/pdf/1707.05783">pdf</a>, <a href="https://arxiv.org/format/1707.05783">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP11(2017)194">10.1007/JHEP11(2017)194 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Digging Deeper for New Physics in the LHC Data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Buckley%2C+M+R">Matthew R. Buckley</a>, <a href="/search/?searchtype=author&query=DiFranzo%2C+A">Anthony DiFranzo</a>, <a href="/search/?searchtype=author&query=Monteux%2C+A">Angelo Monteux</a>, <a href="/search/?searchtype=author&query=Shih%2C+D">David Shih</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1707.05783v1-abstract-short" style="display: inline;"> In this paper we describe a novel, model-independent technique of "rectangular aggregations" for mining the LHC data for hints of new physics. A typical (CMS) search now has hundreds of signal regions, which can obscure potentially interesting anomalies. Applying our technique to the two CMS jets+MET SUSY searches, we identify a set of previously overlooked $\sim 3蟽$ excesses. Among these, four ex… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1707.05783v1-abstract-full').style.display = 'inline'; document.getElementById('1707.05783v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1707.05783v1-abstract-full" style="display: none;"> In this paper we describe a novel, model-independent technique of "rectangular aggregations" for mining the LHC data for hints of new physics. A typical (CMS) search now has hundreds of signal regions, which can obscure potentially interesting anomalies. Applying our technique to the two CMS jets+MET SUSY searches, we identify a set of previously overlooked $\sim 3蟽$ excesses. Among these, four excesses survive tests of inter- and intra-search compatibility, and two are especially interesting: they are largely overlapping between the jets+MET searches and are characterized by low jet multiplicity, zero $b$-jets, and low MET and $H_T$. We find that resonant color-triplet production decaying to a quark plus an invisible particle provides an excellent fit to these two excesses and all other data -- including the ATLAS jets+MET search, which actually sees a correlated excess. We discuss the additional constraints coming from dijet resonance searches, monojet searches and pair production. Based on these results, we believe the wide-spread view that the LHC data contains no interesting excesses is greatly exaggerated. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1707.05783v1-abstract-full').style.display = 'none'; document.getElementById('1707.05783v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 July, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">31 pages + appendices, 14 figures, source code for recasted searches attached as auxiliary material</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1611.03219">arXiv:1611.03219</a> <span> [<a href="https://arxiv.org/pdf/1611.03219">pdf</a>, <a href="https://arxiv.org/format/1611.03219">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Applications">stat.AP</span> </div> </div> <p class="title is-5 mathjax"> Statistical regionalization for estimation of extreme river discharges </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Peiman Asadi</a>, <a href="/search/?searchtype=author&query=Engelke%2C+S">Sebastian Engelke</a>, <a href="/search/?searchtype=author&query=Davison%2C+A+C">Anthony C. Davison</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1611.03219v1-abstract-short" style="display: inline;"> Regionalization methods have long been used to estimate high return levels of river discharges at ungauged locations on a river network. In these methods, the recorded discharge measurements of a group of similar, gauged, stations is used to estimate high quantiles at the target catchment that has no observations. This group is called the region of influence and its similarity to the ungauged loca… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1611.03219v1-abstract-full').style.display = 'inline'; document.getElementById('1611.03219v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1611.03219v1-abstract-full" style="display: none;"> Regionalization methods have long been used to estimate high return levels of river discharges at ungauged locations on a river network. In these methods, the recorded discharge measurements of a group of similar, gauged, stations is used to estimate high quantiles at the target catchment that has no observations. This group is called the region of influence and its similarity to the ungauged location is measured in terms of physical and meteorological catchment attributes. We develop a statistical method for estimation of high return levels based on regionalizing the parameters of a generalized extreme value distribution. The region of influence is chosen in an optimal way, ensuring similarity and in-group homogeneity. Our method is applied to discharge data from the Rhine basin in Switzerland, and its performance at ungauged locations is compared to that of classical regionalization methods. For gauged locations we show how our approach improves the estimation uncertainty for long return periods by combining local measurements with those from the region of influence. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1611.03219v1-abstract-full').style.display = 'none'; document.getElementById('1611.03219v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 November, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2016. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1610.07617">arXiv:1610.07617</a> <span> [<a href="https://arxiv.org/pdf/1610.07617">pdf</a>, <a href="https://arxiv.org/format/1610.07617">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Astrophysical Phenomena">astro-ph.HE</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1475-7516/2017/02/005">10.1088/1475-7516/2017/02/005 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Capture and Decay of Electroweak WIMPonium </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Baumgart%2C+M">Matthew Baumgart</a>, <a href="/search/?searchtype=author&query=Fitzpatrick%2C+P+J">Patrick J. Fitzpatrick</a>, <a href="/search/?searchtype=author&query=Krupczak%2C+E">Emmett Krupczak</a>, <a href="/search/?searchtype=author&query=Slatyer%2C+T+R">Tracy R. Slatyer</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1610.07617v3-abstract-short" style="display: inline;"> The spectrum of Weakly-Interacting-Massive-Particle (WIMP) dark matter generically possesses bound states when the WIMP mass becomes sufficiently large relative to the mass of the electroweak gauge bosons. The presence of these bound states enhances the annihilation rate via resonances in the Sommerfeld enhancement, but they can also be produced directly with the emission of a low-energy photon. I… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1610.07617v3-abstract-full').style.display = 'inline'; document.getElementById('1610.07617v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1610.07617v3-abstract-full" style="display: none;"> The spectrum of Weakly-Interacting-Massive-Particle (WIMP) dark matter generically possesses bound states when the WIMP mass becomes sufficiently large relative to the mass of the electroweak gauge bosons. The presence of these bound states enhances the annihilation rate via resonances in the Sommerfeld enhancement, but they can also be produced directly with the emission of a low-energy photon. In this work we compute the rate for SU(2) triplet dark matter (the wino) to bind into WIMPonium -- which is possible via single-photon emission for wino masses above 5 TeV for relative velocity v < O(10^{-2}) -- and study the subsequent decays of these bound states. We present results with applications beyond the wino case, e.g. for dark matter inhabiting a nonabelian dark sector; these include analytic capture and transition rates for general dark sectors in the limit of vanishing force carrier mass, efficient numerical routines for calculating positive and negative-energy eigenstates of a Hamiltonian containing interactions with both massive and massless force carriers, and a study of the scaling of bound state formation in the short-range Hulthen potential. In the specific case of the wino, we find that the rate for bound state formation is suppressed relative to direct annihilation, and so provides only a small correction to the overall annihilation rate. The soft photons radiated by the capture process and by bound state transitions could permit measurement of the dark matter's quantum numbers; for wino-like dark matter, such photons are rare, but might be observable by a future ground-based gamma-ray telescope combining large effective area and a low energy threshold. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1610.07617v3-abstract-full').style.display = 'none'; document.getElementById('1610.07617v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 October, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">3rd version. An interference sign fixed and changes propagated through the paper. Topline qualitative conclusions unchanged</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1507.05643">arXiv:1507.05643</a> <span> [<a href="https://arxiv.org/pdf/1507.05643">pdf</a>, <a href="https://arxiv.org/format/1507.05643">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Mathematical Physics">math-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1751-8113/49/5/055301">10.1088/1751-8113/49/5/055301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Quantum ergodicity for a class of non-generic systems </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Pouya Asadi</a>, <a href="/search/?searchtype=author&query=Bakhshinezhad%2C+F">Faraj Bakhshinezhad</a>, <a href="/search/?searchtype=author&query=Rezakhani%2C+A+T">Ali T. Rezakhani</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1507.05643v2-abstract-short" style="display: inline;"> We examine quantum normal typicality and ergodicity properties for quantum systems whose dynamics are generated by Hamiltonians which have residual degeneracy in their spectrum and resonance in their energy gaps. Such systems can be considered atypical in the sense that degeneracy, which is usually a sign of symmetry, is naturally broken in typical systems due to stochastic perturbations. In parti… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1507.05643v2-abstract-full').style.display = 'inline'; document.getElementById('1507.05643v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1507.05643v2-abstract-full" style="display: none;"> We examine quantum normal typicality and ergodicity properties for quantum systems whose dynamics are generated by Hamiltonians which have residual degeneracy in their spectrum and resonance in their energy gaps. Such systems can be considered atypical in the sense that degeneracy, which is usually a sign of symmetry, is naturally broken in typical systems due to stochastic perturbations. In particular, we prove a version of von Neumann's quantum ergodic theorem, where a modified condition needs to hold in order to have normal typicality and ergodicity. As a result, we show that degeneracy of spectrum does not considerably modify the condition of the theorem, whereas the existence of resonance is more dominant for obstructing ergodicity. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1507.05643v2-abstract-full').style.display = 'none'; document.getElementById('1507.05643v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 January, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 July, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 2 figures. 2nd version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> J. Phys. A: Math. Theor. 49 055301(2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1501.02663">arXiv:1501.02663</a> <span> [<a href="https://arxiv.org/pdf/1501.02663">pdf</a>, <a href="https://arxiv.org/ps/1501.02663">ps</a>, <a href="https://arxiv.org/format/1501.02663">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Methodology">stat.ME</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Probability">math.PR</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1214/15-AOAS863">10.1214/15-AOAS863 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Extremes on river networks </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Asadi%2C+P">Peiman Asadi</a>, <a href="/search/?searchtype=author&query=Davison%2C+A+C">Anthony C. Davison</a>, <a href="/search/?searchtype=author&query=Engelke%2C+S">Sebastian Engelke</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1501.02663v2-abstract-short" style="display: inline;"> Max-stable processes are the natural extension of the classical extreme-value distributions to the functional setting, and they are increasingly widely used to estimate probabilities of complex extreme events. In this paper we broaden them from the usual situation in which dependence varies according to functions of Euclidean distance to situations in which extreme river discharges at two location… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1501.02663v2-abstract-full').style.display = 'inline'; document.getElementById('1501.02663v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1501.02663v2-abstract-full" style="display: none;"> Max-stable processes are the natural extension of the classical extreme-value distributions to the functional setting, and they are increasingly widely used to estimate probabilities of complex extreme events. In this paper we broaden them from the usual situation in which dependence varies according to functions of Euclidean distance to situations in which extreme river discharges at two locations on a river network may be dependent because the locations are flow-connected or because of common meteorological events. In the former case dependence depends on river distance, and in the second it depends on the hydrological distance between the locations, either of which may be very different from their Euclidean distance. Inference for the model parameters is performed using a multivariate threshold likelihood, which is shown by simulation to work well. The ideas are illustrated with data from the upper Danube basin. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1501.02663v2-abstract-full').style.display = 'none'; document.getElementById('1501.02663v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 February, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 January, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Published at http://dx.doi.org/10.1214/15-AOAS863 in the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> IMS-AOAS-AOAS863 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Annals of Applied Statistics 2015, Vol. 9, No. 4, 2023-2050 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1306.2783">arXiv:1306.2783</a> <span> [<a href="https://arxiv.org/pdf/1306.2783">pdf</a>, <a href="https://arxiv.org/format/1306.2783">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Probability">math.PR</span> </div> </div> <p class="title is-5 mathjax"> Exact boundaries in sequential testing for phase-type distributions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Albrecher%2C+H">Hansj枚rg Albrecher</a>, <a href="/search/?searchtype=author&query=Asadi%2C+P">Peiman Asadi</a>, <a href="/search/?searchtype=author&query=Ivanovs%2C+J">Jevgenijs Ivanovs</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1306.2783v2-abstract-short" style="display: inline;"> We consider Wald's sequential probability ratio test for deciding whether a sequence of independent and identically distributed observations comes from a specified phase-type distribution or from an exponentially tilted alternative distribution. In this setting, we derive exact decision boundaries for given Type I and Type II errors by establishing a link with ruin theory. Information on the mean… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1306.2783v2-abstract-full').style.display = 'inline'; document.getElementById('1306.2783v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1306.2783v2-abstract-full" style="display: none;"> We consider Wald's sequential probability ratio test for deciding whether a sequence of independent and identically distributed observations comes from a specified phase-type distribution or from an exponentially tilted alternative distribution. In this setting, we derive exact decision boundaries for given Type I and Type II errors by establishing a link with ruin theory. Information on the mean sample size of the test can be retrieved as well. The approach relies on the use of matrix-valued scale functions associated to a certain one-sided Markov additive process. By suitable transformations the results also apply to other types of distributions including some distributions with regularly varying tail. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1306.2783v2-abstract-full').style.display = 'none'; document.getElementById('1306.2783v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 July, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 June, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2013. </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div 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