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<button class="button is-small 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/2502.02374">arXiv:2502.02374</a> <span> [<a href="https://arxiv.org/pdf/2502.02374">pdf</a>, <a href="https://arxiv.org/format/2502.02374">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="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Signal shape studies and rate dependence of HFO-based gas mixtures in RPC detectors </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Quaglia%2C+L">L. Quaglia</a>, <a href="/search/nucl-ex?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/nucl-ex?searchtype=author&query=Aielli%2C+G">G. Aielli</a>, <a href="/search/nucl-ex?searchtype=author&query=Aly%2C+R">R. Aly</a>, <a href="/search/nucl-ex?searchtype=author&query=Arena%2C+M+C">M. C. Arena</a>, <a href="/search/nucl-ex?searchtype=author&query=Barroso%2C+M">M. Barroso</a>, <a href="/search/nucl-ex?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/nucl-ex?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordon%2C+F">F. Bordon</a>, <a href="/search/nucl-ex?searchtype=author&query=Boscherini%2C+D">D. Boscherini</a>, <a href="/search/nucl-ex?searchtype=author&query=Bruni%2C+A">A. Bruni</a>, <a href="/search/nucl-ex?searchtype=author&query=Buontempo%2C+S">S. Buontempo</a>, <a href="/search/nucl-ex?searchtype=author&query=Busato%2C+M">M. Busato</a>, <a href="/search/nucl-ex?searchtype=author&query=Camarri%2C+P">P. Camarri</a>, <a href="/search/nucl-ex?searchtype=author&query=Cardarelli%2C+R">R. Cardarelli</a>, <a href="/search/nucl-ex?searchtype=author&query=Congedo%2C+L">L. Congedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Damiao%2C+D+D+J">D. De Jesus Damiao</a>, <a href="/search/nucl-ex?searchtype=author&query=Debernardis%2C+F">F. Debernardis</a>, <a href="/search/nucl-ex?searchtype=author&query=De+Serio%2C+M">M. De Serio</a>, <a href="/search/nucl-ex?searchtype=author&query=Di+Ciaccio%2C+A">A. Di Ciaccio</a>, <a href="/search/nucl-ex?searchtype=author&query=Di+Stante%2C+L">L. Di Stante</a>, <a href="/search/nucl-ex?searchtype=author&query=Dupieux%2C+P">P. Dupieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Eysermans%2C+J">J. Eysermans</a>, <a href="/search/nucl-ex?searchtype=author&query=Ferretti%2C+A">A. Ferretti</a>, <a href="/search/nucl-ex?searchtype=author&query=Gagliardi%2C+M">M. Gagliardi</a> , et al. (34 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="2502.02374v1-abstract-short" style="display: inline;"> The RPCs employed at the LHC experiments are currently operated in avalanche mode, with a mixture containing a large fraction of C$_{2}$H$_{2}$F$_{4}$ ($\approx$90\% or more) with the addition of i-C$_{4}$H$_{10}$ and SF$_{6}$ in different concentrations. However, C$_{2}$H$_{2}$F$_{4}$ and SF$_{6}$ are fluorinated greenhouse gases (F-gases) with Global Warming Potential (GWP) of $\approx$1400 and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.02374v1-abstract-full').style.display = 'inline'; document.getElementById('2502.02374v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2502.02374v1-abstract-full" style="display: none;"> The RPCs employed at the LHC experiments are currently operated in avalanche mode, with a mixture containing a large fraction of C$_{2}$H$_{2}$F$_{4}$ ($\approx$90\% or more) with the addition of i-C$_{4}$H$_{10}$ and SF$_{6}$ in different concentrations. However, C$_{2}$H$_{2}$F$_{4}$ and SF$_{6}$ are fluorinated greenhouse gases (F-gases) with Global Warming Potential (GWP) of $\approx$1400 and $\approx$22800, respectively. EU regulations imposed a progressive phase-down of C$_{2}$H$_{2}$F$_{4}$ production and consumption, aiming at strongly reducing its emission. This is already resulting in an increase of its price and reduction in availability. The most desirable long-term solution to this problem is to find an alternative, F-gases-free gas mixture, able to maintain similar detector performance. To address this challenge, the RPC ECOGasas@GIF++ collaboration (including RPC experts of ALICE, ATLAS, CMS, SHiP/LHCb, and the CERN EP-DT group) was created in 2019. The collaboration is currently studying a gas from the olefine family, the C$_{3}$H$_{2}$F$_{4}$ (or simply HFO, with GWP $\approx$6), to be used, in combination with CO$_{2}$, as a substitute for C$_{2}$H$_{2}$F$_{4}$. This contribution will focus on the signal shape studies that have been carried out by the collaboration during dedicated beam test periods. The methodology used in the data analysis will be presented, together with the results obtained with several HFO-based gas mixtures, and with the currently employed one. Furthermore, results on the counting-rate dependence of the RPC performance, obtained by combining the muon beam with the GIF++ $^{137}$Cs source with different attenuation factors, will also be presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.02374v1-abstract-full').style.display = 'none'; document.getElementById('2502.02374v1-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, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2025. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2002.02761">arXiv:2002.02761</a> <span> [<a href="https://arxiv.org/pdf/2002.02761">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> NURE: An ERC project to study nuclear reactions for neutrinoless double beta decay </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Cavallaro%2C+M">M. Cavallaro</a>, <a href="/search/nucl-ex?searchtype=author&query=Aciksoz%2C+E">E. Aciksoz</a>, <a href="/search/nucl-ex?searchtype=author&query=Acosta%2C+L">L. Acosta</a>, <a href="/search/nucl-ex?searchtype=author&query=Agodi%2C+C">C. Agodi</a>, <a href="/search/nucl-ex?searchtype=author&query=Auerbach%2C+N">N. Auerbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellone%2C+J">J. Bellone</a>, <a href="/search/nucl-ex?searchtype=author&query=Bijker%2C+R">R. Bijker</a>, <a href="/search/nucl-ex?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/nucl-ex?searchtype=author&query=Bonanno%2C+D">D. Bonanno</a>, <a href="/search/nucl-ex?searchtype=author&query=Bongiovanni%2C+D">D. Bongiovanni</a>, <a href="/search/nucl-ex?searchtype=author&query=Borello%2C+T">T. Borello</a>, <a href="/search/nucl-ex?searchtype=author&query=Boztosun%2C+I">I. Boztosun</a>, <a href="/search/nucl-ex?searchtype=author&query=Branchina%2C+V">V. Branchina</a>, <a href="/search/nucl-ex?searchtype=author&query=Bussa%2C+M+P">M. P. Bussa</a>, <a href="/search/nucl-ex?searchtype=author&query=Busso%2C+L">L. Busso</a>, <a href="/search/nucl-ex?searchtype=author&query=Calabrese%2C+S">S. Calabrese</a>, <a href="/search/nucl-ex?searchtype=author&query=Calabretta%2C+L">L. Calabretta</a>, <a href="/search/nucl-ex?searchtype=author&query=Calanna%2C+A">A. Calanna</a>, <a href="/search/nucl-ex?searchtype=author&query=Calvo%2C+D">D. Calvo</a>, <a href="/search/nucl-ex?searchtype=author&query=Cappuzzello%2C+F">F. Cappuzzello</a>, <a href="/search/nucl-ex?searchtype=author&query=Carbone%2C+D">D. Carbone</a>, <a href="/search/nucl-ex?searchtype=author&query=Lomeli%2C+E+R+C">E. R. Chavez Lomeli</a>, <a href="/search/nucl-ex?searchtype=author&query=Colonna%2C+M">M. Colonna</a>, <a href="/search/nucl-ex?searchtype=author&query=Agostino%2C+G+D">G. D Agostino</a>, <a href="/search/nucl-ex?searchtype=author&query=Deshmuk%2C+N">N. Deshmuk</a> , et al. (49 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="2002.02761v1-abstract-short" style="display: inline;"> Neutrinoless double beta decay (0谓\b{eta}\b{eta}) is considered the best potential resource to determine the absolute neutrino mass scale. Moreover, if observed, it will signal that the total lepton number is not conserved and neutrinos are their own anti-particles. Presently, this physics case is one of the most important research beyond Standard Model and might guide the way towards a Grand Unif… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2002.02761v1-abstract-full').style.display = 'inline'; document.getElementById('2002.02761v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2002.02761v1-abstract-full" style="display: none;"> Neutrinoless double beta decay (0谓\b{eta}\b{eta}) is considered the best potential resource to determine the absolute neutrino mass scale. Moreover, if observed, it will signal that the total lepton number is not conserved and neutrinos are their own anti-particles. Presently, this physics case is one of the most important research beyond Standard Model and might guide the way towards a Grand Unified Theory of fundamental interactions. Since the \b{eta}\b{eta} decay process involves nuclei, its analysis necessarily implies nuclear structure issues. The 0谓\b{eta}\b{eta} decay rate can be expressed as a product of independent factors: the phase-space factors, the nuclear matrix elements (NME) and a function of the masses of the neutrino species. Thus the knowledge of the NME can give information on the neutrino mass scale, if the 0谓\b{eta}\b{eta} decay rate is measured. In the NURE project, supported by a Starting Grant of the European Research Council, nuclear reactions of double charge-exchange (DCE) will be used as a tool to extract information on the \b{eta}\b{eta} NME. In DCE reactions and \b{eta}\b{eta} decay, the initial and final nuclear states are the same and the transition operators have similar structure. Thus the measurement of the DCE absolute crosssections can give crucial information on \b{eta}\b{eta} matrix elements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2002.02761v1-abstract-full').style.display = 'none'; document.getElementById('2002.02761v1-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 January, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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">arXiv admin note: substantial text overlap with arXiv:2001.09657; text overlap with arXiv:2001.09648</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1409.0865">arXiv:1409.0865</a> <span> [<a href="https://arxiv.org/pdf/1409.0865">pdf</a>, <a href="https://arxiv.org/ps/1409.0865">ps</a>, <a href="https://arxiv.org/format/1409.0865">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Experimental access to Transition Distribution Amplitudes with the PANDA experiment at FAIR </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=PANDA+Collaboration"> PANDA Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Singh%2C+B+P">B. P. Singh</a>, <a href="/search/nucl-ex?searchtype=author&query=Erni%2C+W">W. Erni</a>, <a href="/search/nucl-ex?searchtype=author&query=Keshelashvili%2C+I">I. Keshelashvili</a>, <a href="/search/nucl-ex?searchtype=author&query=Krusche%2C+B">B. Krusche</a>, <a href="/search/nucl-ex?searchtype=author&query=%25%2C+M+S">M. Steinacher %</a>, <a href="/search/nucl-ex?searchtype=author&query=Liu%2C+B">B. Liu</a>, <a href="/search/nucl-ex?searchtype=author&query=Liu%2C+H">H. Liu</a>, <a href="/search/nucl-ex?searchtype=author&query=Liu%2C+Z">Z. Liu</a>, <a href="/search/nucl-ex?searchtype=author&query=Shen%2C+X">X. Shen</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+C">C. Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=%25%2C+J+Z">J. Zhao %</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+M">M. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Fink%2C+M">M. Fink</a>, <a href="/search/nucl-ex?searchtype=author&query=Heinsius%2C+F+H">F. H. Heinsius</a>, <a href="/search/nucl-ex?searchtype=author&query=Held%2C+T">T. Held</a>, <a href="/search/nucl-ex?searchtype=author&query=Holtmann%2C+T">T. Holtmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Koch%2C+H">H. Koch</a>, <a href="/search/nucl-ex?searchtype=author&query=Kopf%2C+B">B. Kopf</a>, <a href="/search/nucl-ex?searchtype=author&query=K%C3%BCmmel%2C+M">M. K眉mmel</a>, <a href="/search/nucl-ex?searchtype=author&query=Kuhl%2C+G">G. Kuhl</a>, <a href="/search/nucl-ex?searchtype=author&query=Kuhlmann%2C+M">M. Kuhlmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Leyhe%2C+M">M. Leyhe</a>, <a href="/search/nucl-ex?searchtype=author&query=Mikirtychyants%2C+M">M. Mikirtychyants</a>, <a href="/search/nucl-ex?searchtype=author&query=Musiol%2C+P">P. Musiol</a> , et al. (511 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="1409.0865v2-abstract-short" style="display: inline;"> Baryon-to-meson Transition Distribution Amplitudes (TDAs) encoding valuable new information on hadron structure appear as building blocks in the collinear factorized description for several types of hard exclusive reactions. In this paper, we address the possibility of accessing nucleon-to-pion ($蟺N$) TDAs from $\bar{p}p \to e^+e^- 蟺^0$ reaction with the future PANDA detector at the FAIR facility.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1409.0865v2-abstract-full').style.display = 'inline'; document.getElementById('1409.0865v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1409.0865v2-abstract-full" style="display: none;"> Baryon-to-meson Transition Distribution Amplitudes (TDAs) encoding valuable new information on hadron structure appear as building blocks in the collinear factorized description for several types of hard exclusive reactions. In this paper, we address the possibility of accessing nucleon-to-pion ($蟺N$) TDAs from $\bar{p}p \to e^+e^- 蟺^0$ reaction with the future PANDA detector at the FAIR facility. At high center of mass energy and high invariant mass squared of the lepton pair $q^2$, the amplitude of the signal channel $\bar{p}p \to e^+e^- 蟺^0$ admits a QCD factorized description in terms of $蟺N$ TDAs and nucleon Distribution Amplitudes (DAs) in the forward and backward kinematic regimes. Assuming the validity of this factorized description, we perform feasibility studies for measuring $\bar{p}p \to e^+e^- 蟺^0$ with the PANDA detector. Detailed simulations on signal reconstruction efficiency as well as on rejection of the most severe background channel, i.e. $\bar{p}p \to 蟺^+蟺^- 蟺^0$ were performed for the center of mass energy squared $s = 5$ GeV$^2$ and $s = 10$ GeV$^2$, in the kinematic regions $3.0 < q^2 < 4.3$ GeV$^2$ and $5 < q^2 < 9$ GeV$^2$, respectively, with a neutral pion scattered in the forward or backward cone $| \cos胃_{蟺^0}| > 0.5 $ in the proton-antiproton center of mass frame. Results of the simulation show that the particle identification capabilities of the PANDA detector will allow to achieve a background rejection factor of $5\cdot 10^7$ ($1\cdot 10^7$) at low (high) $q^2$ for $s=5$ GeV$^2$, and of $1\cdot 10^8$ ($6\cdot 10^6$) at low (high) $q^2$ for $s=10$ GeV$^2$, while keeping the signal reconstruction efficiency at around $40\%$. At both energies, a clean lepton signal can be reconstructed with the expected statistics corresponding to $2$ fb$^{-1}$ of integrated luminosity. (.../...) <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1409.0865v2-abstract-full').style.display = 'none'; document.getElementById('1409.0865v2-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> 30 November, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 September, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2014. </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">19 pages, 7 figures (some multiple), 2 tables (each double), preprint of an article for epj - v2</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/nucl-ex/0607019">arXiv:nucl-ex/0607019</a> <span> [<a href="https://arxiv.org/pdf/nucl-ex/0607019">pdf</a>, <a href="https://arxiv.org/ps/nucl-ex/0607019">ps</a>, <a href="https://arxiv.org/format/nucl-ex/0607019">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link 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/10.1016/j.physletb.2006.07.051">10.1016/j.physletb.2006.07.051 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Production of $^{6}_螞$H and $^{7}_螞$H with the (K$^{-}_{stop}$,$蟺^+$) reaction </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Agnello%2C+M">M. Agnello</a>, <a href="/search/nucl-ex?searchtype=author&query=Beer%2C+G">G. Beer</a>, <a href="/search/nucl-ex?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/nucl-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhang%2C+H+C">H. C. Bhang</a>, <a href="/search/nucl-ex?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/nucl-ex?searchtype=author&query=Bonomi%2C+G">G. Bonomi</a>, <a href="/search/nucl-ex?searchtype=author&query=Botta%2C+E">E. Botta</a>, <a href="/search/nucl-ex?searchtype=author&query=Bregant%2C+M">M. Bregant</a>, <a href="/search/nucl-ex?searchtype=author&query=Bressani%2C+T">T. Bressani</a>, <a href="/search/nucl-ex?searchtype=author&query=Bufalino%2C+S">S. Bufalino</a>, <a href="/search/nucl-ex?searchtype=author&query=Busso%2C+L">L. Busso</a>, <a href="/search/nucl-ex?searchtype=author&query=Calvo%2C+D">D. Calvo</a>, <a href="/search/nucl-ex?searchtype=author&query=Camerini%2C+P">P. Camerini</a>, <a href="/search/nucl-ex?searchtype=author&query=Cerello%2C+P">P. Cerello</a>, <a href="/search/nucl-ex?searchtype=author&query=Dalena%2C+B">B. Dalena</a>, <a href="/search/nucl-ex?searchtype=author&query=De+Mori%2C+F">F. De Mori</a>, <a href="/search/nucl-ex?searchtype=author&query=D%27Erasmo%2C+G">G. D'Erasmo</a>, <a href="/search/nucl-ex?searchtype=author&query=Di+Santo%2C+D">D. Di Santo</a>, <a href="/search/nucl-ex?searchtype=author&query=Elia%2C+D">D. Elia</a>, <a href="/search/nucl-ex?searchtype=author&query=Fabbri%2C+F+L">F. L. Fabbri</a>, <a href="/search/nucl-ex?searchtype=author&query=Faso%2C+D">D. Faso</a>, <a href="/search/nucl-ex?searchtype=author&query=Feliciello%2C+A">A. Feliciello</a>, <a href="/search/nucl-ex?searchtype=author&query=Filippi%2C+A">A. Filippi</a>, <a href="/search/nucl-ex?searchtype=author&query=Filippini%2C+V">V. Filippini</a> , et al. (31 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="nucl-ex/0607019v1-abstract-short" style="display: inline;"> The production of neutron rich $螞$-hypernuclei via the ($K^-_stop$,$蟺^+$) reaction has been studied using data collected with the FINUDA spectrometer at the DA$桅$NE $蠁$-factory (LNF). The analysis of the inclusive $蟺^+$ momentum spectra is presented and an upper limit for the production of $^6_螞$H and $^7_螞$H from $^6$Li and $^7$Li, is assessed for the first time. </span> <span class="abstract-full has-text-grey-dark mathjax" id="nucl-ex/0607019v1-abstract-full" style="display: none;"> The production of neutron rich $螞$-hypernuclei via the ($K^-_stop$,$蟺^+$) reaction has been studied using data collected with the FINUDA spectrometer at the DA$桅$NE $蠁$-factory (LNF). The analysis of the inclusive $蟺^+$ momentum spectra is presented and an upper limit for the production of $^6_螞$H and $^7_螞$H from $^6$Li and $^7$Li, is assessed for the first time. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/0607019v1-abstract-full').style.display = 'none'; document.getElementById('nucl-ex/0607019v1-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 July, 2006; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2006. </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, 3 figures. Accepted for publication in PLB</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/nucl-ex/0606021">arXiv:nucl-ex/0606021</a> <span> [<a href="https://arxiv.org/pdf/nucl-ex/0606021">pdf</a>, <a href="https://arxiv.org/ps/nucl-ex/0606021">ps</a>, <a href="https://arxiv.org/format/nucl-ex/0606021">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> A study of the proton spectra following the capture of $K^-$ in $^6$Li and $^{12}$C with FINUDA </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Agnello%2C+M">M. Agnello</a>, <a href="/search/nucl-ex?searchtype=author&query=Beer%2C+G">G. Beer</a>, <a href="/search/nucl-ex?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/nucl-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhang%2C+H+C">H. C. Bhang</a>, <a href="/search/nucl-ex?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/nucl-ex?searchtype=author&query=Bonomi%2C+G">G. Bonomi</a>, <a href="/search/nucl-ex?searchtype=author&query=Botta%2C+E">E. Botta</a>, <a href="/search/nucl-ex?searchtype=author&query=Bregant%2C+M">M. Bregant</a>, <a href="/search/nucl-ex?searchtype=author&query=Bressani%2C+T">T. Bressani</a>, <a href="/search/nucl-ex?searchtype=author&query=Bufalino%2C+S">S. Bufalino</a>, <a href="/search/nucl-ex?searchtype=author&query=Busso%2C+L">L. Busso</a>, <a href="/search/nucl-ex?searchtype=author&query=Calvo%2C+D">D. Calvo</a>, <a href="/search/nucl-ex?searchtype=author&query=Camerini%2C+P">P. Camerini</a>, <a href="/search/nucl-ex?searchtype=author&query=Cerello%2C+P">P. Cerello</a>, <a href="/search/nucl-ex?searchtype=author&query=Dalena%2C+B">B. Dalena</a>, <a href="/search/nucl-ex?searchtype=author&query=De+Mori%2C+F">F. De Mori</a>, <a href="/search/nucl-ex?searchtype=author&query=D%27Erasmo%2C+G">G. D'Erasmo</a>, <a href="/search/nucl-ex?searchtype=author&query=Di+Santo%2C+D">D. Di Santo</a>, <a href="/search/nucl-ex?searchtype=author&query=Elia%2C+D">D. Elia</a>, <a href="/search/nucl-ex?searchtype=author&query=Fabbri%2C+F+L">F. L. Fabbri</a>, <a href="/search/nucl-ex?searchtype=author&query=Faso%2C+D">D. Faso</a>, <a href="/search/nucl-ex?searchtype=author&query=Feliciello%2C+A">A. Feliciello</a>, <a href="/search/nucl-ex?searchtype=author&query=Filippi%2C+A">A. Filippi</a>, <a href="/search/nucl-ex?searchtype=author&query=Filippini%2C+V">V. Filippini</a> , et al. (33 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="nucl-ex/0606021v1-abstract-short" style="display: inline;"> Momenta spectra of protons emitted following the capture of $K^-$ in $^6$Li and $^{12}$C have been measured with 1% resolution. The $^{12}$C spectrum is smooth whereas for $^6$Li a well defined peak appears at about 500 MeV/$c$. The first observation of a structure in this region was identified as a strange tribaryon or, possibly, a $\bar K$-nuclear state. The peak is correlated with a $蟺^-$ com… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/0606021v1-abstract-full').style.display = 'inline'; document.getElementById('nucl-ex/0606021v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="nucl-ex/0606021v1-abstract-full" style="display: none;"> Momenta spectra of protons emitted following the capture of $K^-$ in $^6$Li and $^{12}$C have been measured with 1% resolution. The $^{12}$C spectrum is smooth whereas for $^6$Li a well defined peak appears at about 500 MeV/$c$. The first observation of a structure in this region was identified as a strange tribaryon or, possibly, a $\bar K$-nuclear state. The peak is correlated with a $蟺^-$ coming from $危^-$ decay in flight, selected by setting momenta larger than 275 MeV/$c$. The $危^-$ could be produced, together with a 500 MeV/$c$ proton, by the capture of a $K^-$ in a deuteron-cluster substructure of the $^6$Li nucleus. The capture rate for such a reaction is $(1.62\pm 0.23_{stat} ^{+0.71}_{-0.44}(sys))%/K^-_{stop}$, in agreement with the existing observations on $^4$He targets and with the hypothesis that the $^6$Li nucleus can be interpreted as a $(d+伪)$ cluster. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/0606021v1-abstract-full').style.display = 'none'; document.getElementById('nucl-ex/0606021v1-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> 14 June, 2006; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2006. </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 pages, 10 figures. Accepted for publication in NPA</span> </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 class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg> <a href="https://info.arxiv.org/help/contact.html"> Contact</a> </li> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>subscribe to arXiv mailings</title><desc>Click here to subscribe</desc><path d="M476 3.2L12.5 270.6c-18.1 10.4-15.8 35.6 2.2 43.2L121 358.4l287.3-253.2c5.5-4.9 13.3 2.6 8.6 8.3L176 407v80.5c0 23.6 28.5 32.9 42.5 15.8L282 426l124.6 52.2c14.2 6 30.4-2.9 33-18.2l72-432C515 7.8 493.3-6.8 476 3.2z"/></svg> <a href="https://info.arxiv.org/help/subscribe"> Subscribe</a> </li> </ul> </div> </div> </div>   <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/license/index.html">Copyright</a></li> <li><a href="https://info.arxiv.org/help/policies/privacy_policy.html">Privacy Policy</a></li> </ul> </div> <div class="column sorry-app-links"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/web_accessibility.html">Web Accessibility Assistance</a></li> <li> <p class="help"> <a class="a11y-main-link" href="https://status.arxiv.org" target="_blank">arXiv Operational Status <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 512" class="icon filter-dark_grey" role="presentation"><path d="M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z"/></svg></a><br> Get status notifications via <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/email/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg>email</a> or <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/slack/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon filter-black" role="presentation"><path d="M94.12 315.1c0 25.9-21.16 47.06-47.06 47.06S0 341 0 315.1c0-25.9 21.16-47.06 47.06-47.06h47.06v47.06zm23.72 0c0-25.9 21.16-47.06 47.06-47.06s47.06 21.16 47.06 47.06v117.84c0 25.9-21.16 47.06-47.06 47.06s-47.06-21.16-47.06-47.06V315.1zm47.06-188.98c-25.9 0-47.06-21.16-47.06-47.06S139 32 164.9 32s47.06 21.16 47.06 47.06v47.06H164.9zm0 23.72c25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06H47.06C21.16 243.96 0 222.8 0 196.9s21.16-47.06 47.06-47.06H164.9zm188.98 47.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06h-47.06V196.9zm-23.72 0c0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06V79.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06V196.9zM283.1 385.88c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06v-47.06h47.06zm0-23.72c-25.9 0-47.06-21.16-47.06-47.06 0-25.9 21.16-47.06 47.06-47.06h117.84c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06H283.1z"/></svg>slack</a> </p> </li> </ul> </div> </div> </div>  </div> </footer> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/member_acknowledgement.js"></script> </body> </html>

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