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name="searchtype"><option value="all">All fields</option><option value="title">Title</option><option selected value="author">Author(s)</option><option value="abstract">Abstract</option><option value="comments">Comments</option><option value="journal_ref">Journal reference</option><option value="acm_class">ACM classification</option><option value="msc_class">MSC classification</option><option value="report_num">Report number</option><option value="paper_id">arXiv identifier</option><option value="doi">DOI</option><option value="orcid">ORCID</option><option value="license">License (URI)</option><option value="author_id">arXiv author ID</option><option value="help">Help pages</option><option value="full_text">Full text</option></select> <input id="query" name="query" type="text" value="Banks, H"> <ul id="abstracts"><li><input checked id="abstracts-0" name="abstracts" type="radio" value="show"> <label for="abstracts-0">Show abstracts</label></li><li><input id="abstracts-1" name="abstracts" 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is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2407.11112">arXiv:2407.11112</a> <span> [<a href="https://arxiv.org/pdf/2407.11112">pdf</a>, <a href="https://arxiv.org/format/2407.11112">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> </div> <p class="title is-5 mathjax"> A Nuclear Interferometer for Ultra-Light Dark Matter Detection </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Banks%2C+H">Hannah Banks</a>, <a href="/search/hep-ex?searchtype=author&query=Fuchs%2C+E">Elina Fuchs</a>, <a href="/search/hep-ex?searchtype=author&query=McCullough%2C+M">Matthew McCullough</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="2407.11112v2-abstract-short" style="display: inline;"> We propose the nuclear interferometer - a single-photon interferometry experiment based upon the thorium-229 nuclear clock transition - as a novel detector for ultra-light dark matter (ULDM). Thanks to the enhanced sensitivity of this transition to the variation of fundamental constants, we find that possible realisations of such an experiment deploying either single ions or clouds of atoms have t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.11112v2-abstract-full').style.display = 'inline'; document.getElementById('2407.11112v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2407.11112v2-abstract-full" style="display: none;"> We propose the nuclear interferometer - a single-photon interferometry experiment based upon the thorium-229 nuclear clock transition - as a novel detector for ultra-light dark matter (ULDM). Thanks to the enhanced sensitivity of this transition to the variation of fundamental constants, we find that possible realisations of such an experiment deploying either single ions or clouds of atoms have the potential to complement advanced very-long-baseline terrestrial clock atom interferometers in the search for ultra-light dark matter with scalar couplings to photons in the future. Nuclear interferometry may also offer an unparalleled window to new physics coupling to the QCD sector via quarks or gluons, with a discovery reach that could enhance existing and proposed experiments over a range of frequencies in the direction of well-motivated parameter space. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.11112v2-abstract-full').style.display = 'none'; document.getElementById('2407.11112v2-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 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 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">20 pages, 7 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-TH-2024-104 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.08183">arXiv:2310.08183</a> <span> [<a href="https://arxiv.org/pdf/2310.08183">pdf</a>, <a href="https://arxiv.org/format/2310.08183">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="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="General Relativity and Quantum Cosmology">gr-qc</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="Atomic Physics">physics.atom-ph</span> </div> </div> <p class="title is-5 mathjax"> Terrestrial Very-Long-Baseline Atom Interferometry: Workshop Summary </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Abend%2C+S">Sven Abend</a>, <a href="/search/hep-ex?searchtype=author&query=Allard%2C+B">Baptiste Allard</a>, <a href="/search/hep-ex?searchtype=author&query=Alonso%2C+I">Iv谩n Alonso</a>, <a href="/search/hep-ex?searchtype=author&query=Antoniadis%2C+J">John Antoniadis</a>, <a href="/search/hep-ex?searchtype=author&query=Araujo%2C+H">Henrique Araujo</a>, <a href="/search/hep-ex?searchtype=author&query=Arduini%2C+G">Gianluigi Arduini</a>, <a href="/search/hep-ex?searchtype=author&query=Arnold%2C+A">Aidan Arnold</a>, <a href="/search/hep-ex?searchtype=author&query=A%C3%9Fmann%2C+T">Tobias A脽mann</a>, <a href="/search/hep-ex?searchtype=author&query=Augst%2C+N">Nadja Augst</a>, <a href="/search/hep-ex?searchtype=author&query=Badurina%2C+L">Leonardo Badurina</a>, <a href="/search/hep-ex?searchtype=author&query=Balaz%2C+A">Antun Balaz</a>, <a href="/search/hep-ex?searchtype=author&query=Banks%2C+H">Hannah Banks</a>, <a href="/search/hep-ex?searchtype=author&query=Barone%2C+M">Michele Barone</a>, <a href="/search/hep-ex?searchtype=author&query=Barsanti%2C+M">Michele Barsanti</a>, <a href="/search/hep-ex?searchtype=author&query=Bassi%2C+A">Angelo Bassi</a>, <a href="/search/hep-ex?searchtype=author&query=Battelier%2C+B">Baptiste Battelier</a>, <a href="/search/hep-ex?searchtype=author&query=Baynham%2C+C">Charles Baynham</a>, <a href="/search/hep-ex?searchtype=author&query=Quentin%2C+B">Beaufils Quentin</a>, <a href="/search/hep-ex?searchtype=author&query=Belic%2C+A">Aleksandar Belic</a>, <a href="/search/hep-ex?searchtype=author&query=Beniwal%2C+A">Ankit Beniwal</a>, <a href="/search/hep-ex?searchtype=author&query=Bernabeu%2C+J">Jose Bernabeu</a>, <a href="/search/hep-ex?searchtype=author&query=Bertinelli%2C+F">Francesco Bertinelli</a>, <a href="/search/hep-ex?searchtype=author&query=Bertoldi%2C+A">Andrea Bertoldi</a>, <a href="/search/hep-ex?searchtype=author&query=Biswas%2C+I+A">Ikbal Ahamed Biswas</a>, <a href="/search/hep-ex?searchtype=author&query=Blas%2C+D">Diego Blas</a> , et al. (228 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="2310.08183v1-abstract-short" style="display: inline;"> This document presents a summary of the 2023 Terrestrial Very-Long-Baseline Atom Interferometry Workshop hosted by CERN. The workshop brought together experts from around the world to discuss the exciting developments in large-scale atom interferometer (AI) prototypes and their potential for detecting ultralight dark matter and gravitational waves. The primary objective of the workshop was to lay… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.08183v1-abstract-full').style.display = 'inline'; document.getElementById('2310.08183v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.08183v1-abstract-full" style="display: none;"> This document presents a summary of the 2023 Terrestrial Very-Long-Baseline Atom Interferometry Workshop hosted by CERN. The workshop brought together experts from around the world to discuss the exciting developments in large-scale atom interferometer (AI) prototypes and their potential for detecting ultralight dark matter and gravitational waves. The primary objective of the workshop was to lay the groundwork for an international TVLBAI proto-collaboration. This collaboration aims to unite researchers from different institutions to strategize and secure funding for terrestrial large-scale AI projects. The ultimate goal is to create a roadmap detailing the design and technology choices for one or more km-scale detectors, which will be operational in the mid-2030s. The key sections of this report present the physics case and technical challenges, together with a comprehensive overview of the discussions at the workshop together with the main conclusions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.08183v1-abstract-full').style.display = 'none'; document.getElementById('2310.08183v1-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 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">Summary of the Terrestrial Very-Long-Baseline Atom Interferometry Workshop held at CERN: https://indico.cern.ch/event/1208783/</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2302.07887">arXiv:2302.07887</a> <span> [<a href="https://arxiv.org/pdf/2302.07887">pdf</a>, <a href="https://arxiv.org/format/2302.07887">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="General Relativity and Quantum Cosmology">gr-qc</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Astrophysical Phenomena">astro-ph.HE</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"> Gravitational Wave Backgrounds from Colliding ECOs </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Banks%2C+H">Hannah Banks</a>, <a href="/search/hep-ex?searchtype=author&query=Grabowska%2C+D+M">Dorota M. Grabowska</a>, <a href="/search/hep-ex?searchtype=author&query=McCullough%2C+M">Matthew McCullough</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="2302.07887v1-abstract-short" style="display: inline;"> Long baseline atom interferometers offer an exciting opportunity to explore mid-frequency gravitational waves. In this work we survey the landscape of possible contributions to the total 'gravitational wave background' in this frequency band and advocate for targeting this observable. Such an approach is complimentary to searches for resolved mergers from individual sources and may have much to re… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2302.07887v1-abstract-full').style.display = 'inline'; document.getElementById('2302.07887v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2302.07887v1-abstract-full" style="display: none;"> Long baseline atom interferometers offer an exciting opportunity to explore mid-frequency gravitational waves. In this work we survey the landscape of possible contributions to the total 'gravitational wave background' in this frequency band and advocate for targeting this observable. Such an approach is complimentary to searches for resolved mergers from individual sources and may have much to reveal about the Universe. We find that the inspiral phases of stellar-mass compact binaries cumulatively produce a signal well within reach of the proposed AION-km and AEDGE experiments. Hypothetical populations of dark sector exotic compact objects, harbouring just a tiny fraction of the dark energy density, could also generate signatures unique to mid- and low-frequency gravitational wave detectors, providing a novel means to probe complexity in the dark sector. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2302.07887v1-abstract-full').style.display = 'none'; document.getElementById('2302.07887v1-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> 15 February, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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">32 pages, 5 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-TH-2023-016, IQuS@UW-21-044 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2111.06691">arXiv:2111.06691</a> <span> [<a href="https://arxiv.org/pdf/2111.06691">pdf</a>, <a href="https://arxiv.org/format/2111.06691">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/10.1140/epjc/s10052-022-10191-6">10.1140/epjc/s10052-022-10191-6 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Hide and Seek with the Third Family Hypercharge Model's $Z^\prime$ at the Large Hadron Collider </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Allanach%2C+B">Ben Allanach</a>, <a href="/search/hep-ex?searchtype=author&query=Banks%2C+H">Hannah Banks</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="2111.06691v4-abstract-short" style="display: inline;"> The Third Family Hypercharge Model predicts a $Z^\prime$ gauge boson with flavour dependent couplings which has been used to explain anomalies in meson decay processes which involve the $b\rightarrow s渭^+渭^-$ transition. The model predicts that a TeV-scale $Z^\prime$ should decay to particle-antiparticle pairs of muons, taus, top quarks and bottom quarks with appreciable branching ratios. We reint… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.06691v4-abstract-full').style.display = 'inline'; document.getElementById('2111.06691v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2111.06691v4-abstract-full" style="display: none;"> The Third Family Hypercharge Model predicts a $Z^\prime$ gauge boson with flavour dependent couplings which has been used to explain anomalies in meson decay processes which involve the $b\rightarrow s渭^+渭^-$ transition. The model predicts that a TeV-scale $Z^\prime$ should decay to particle-antiparticle pairs of muons, taus, top quarks and bottom quarks with appreciable branching ratios. We reinterpret various ATLAS and CMS search limits for $Z^\prime$ production followed by such decays at the LHC over a parameter space of the model that results from a successful combined fit to the $b\rightarrow s l^+ l^-$ data and precision electroweak observables. Current exclusions in parameter space and expected sensitivities of the various different channels in the high-luminosity run are compared. We find that the high-luminosity run of the LHC will significantly increase the sensitivity to the model beyond the existing observational limits, which we find to be surprisingly weak. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.06691v4-abstract-full').style.display = 'none'; document.getElementById('2111.06691v4-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 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 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">15 pages, 22 figures</span> </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" 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