杰斐逊实验室束流收集实验(BDX)中的暗物质搜寻
高能物理 - 实验
2016-07-07 v1 宇宙学与河外天体物理
高能物理 - 唯象学
核实验
摘要
MeV-GeV量级的暗物质在理论上具有充分的动机，但在实验上却鲜有探索。本提案展示了在杰斐逊实验室Hall A束流收集器下游放置一个约1立方米的分段式CsI(Tl)闪烁体探测器，在285天内接收高达10^22个在靶电子(EOT)的条件下，对MeV-GeV暗物质的发现潜力。该实验（束流收集实验，BDX）将对弹性暗物质-电子散射和非弹性暗物质散射具有灵敏度，达到每年10个计数的水平，触及中微子不可约背景的极限。暗物质相互作用的独特特征将是一个能量为数百MeV的电磁簇射，同时周围有源否决计数器的活度降低。通过蒙特卡罗模拟，对暗物质粒子χ在收集器中的产生及其在探测器中的后续相互作用进行了详细描述。采用了不同方法来评估预期背景：宇宙线背景由在意大利INFN-LNS运行的原型探测器所得结果外推得到，而束流相关背景则通过GEANT4蒙特卡罗模拟评估。所提议的实验将对暗物质参数空间的广大区域敏感，在MeV-GeV暗物质质量范围内，其发现潜力超出已有和计划中的实验最多达两个数量级。
引用
@article{arxiv.1607.01390,
title = {Dark matter search in a Beam-Dump eXperiment (BDX) at Jefferson Lab},
author = {M. Battaglieri and A. Bersani and B. Caiffi and A. Celentano and R. De Vita and E. Fanchini and L. Marsicano and P. Musico and M. Osipenko and F. Panza and M. Ripani and E. Santopinto and M. Taiuti and V. Bellini and M. Bondí and M. De Napoli and F. Mammoliti and E. Leonora and N. Randazzo and G. Russo and M. Sperduto and C. Sutera and F. Tortorici and N. Baltzell and M. Dalton and A. Freyberger and F. X. Girod and V. Kubarovsky and E. Pasyuk and E. S. Smith and S. Stepanyan and M. Ungaro and T. Whitlatch and E. Izaguirre and G. Krnjaic and D. Snowden-Ifft and D. Loomba and M. Carpinelli and V. Sipala and P. Schuster and N. Toro and R. Essig and M. H. Wood and M. Holtrop and R. Paremuzyan and G. De Cataldo and R. De Leo and D. Di Bari and L. Lagamba and E. Nappi and R. Perrino and I. Balossino and L. Barion and G. Ciullo and M. Contalbrigo and P. Lenisa and A. Movsisyan and F. Spizzo and M. Turisini and F. De Persio and E. Cisbani and F. Garibaldi and F. Meddi and G. M. Urciuoli and D. Hasch and V. Lucherini and M. Mirazita and S. Pisano and G. Simi and A. D'Angelo and L. Lanza and A. Rizzo and C. Schaerf and I. Zonta and A. Filippi and S. Fegan and M. Kunkel and M. Bashkanov and P. Beltrame and A. Murphy and G. Smith and D. Watts and N. Zachariou and L. Zana and D. Glazier and D. Ireland and B. McKinnon and D. Sokhan and L. Colaneri and S. Anefalos Pereira and A. Afanasev and B. Briscoe and I. Strakovsky and N. Kalantarians and L. Weinstein and K. P. Adhikari and J. A. Dunne and D. Dutta and L. El Fassi and L. Ye and K. Hicks and P. Cole and S. Dobbs and C. Fanelli},
journal= {arXiv preprint arXiv:1607.01390},
year = {2016}
}
备注
Proposal submitted to the 44th JLab PAC. 125 pages, 60 figures