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arXiv 1909.05913hep-exnucl-ex
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氩中中微子-核相干弹性散射的第一约束

First Constraint on Coherent Elastic Neutrino-Nucleus Scattering in Argon

COHERENT Collaboration, D. Akimov, J. B. Albert, P. An, C. Awe, P. S. Barbeau, B. Becker, V. Belov, M. A. Blackston, A. Bolozdynya, B. Cabrera-Palmer, M. Cervan… 展开作者

COHERENT Collaboration, D. Akimov, J. B. Albert, P. An, C. Awe, P. S. Barbeau, B. Becker, V. Belov, M. A. Blackston, A. Bolozdynya, B. Cabrera-Palmer, M. Cervantes, J. I. Collar, R. L. Cooper, J. Daughhetee, M. del Valle Coello, J. A. Detwiler, M. D'Onofrio, Y. Efremenko, E. M. Erkela, S. R. Elliott, L. Fabris, M. Febbraro, W. Fox, A. Galindo-Uribarri, M. P. Green, K. S. Hansen, M. R. Heath, S. Hedges, T. Johnson, M. Kaemingk, L. J. Kaufman, A. Khromov, A. Konovalov, E. Kozlova, A. Kumpan, L. Li, J. T. Librande, J. M. Link, J. Liu, K. Mann, D. M. Markoff, H. Moreno, P. E. Mueller, J. Newby, D. S. Parno, S. Penttila, D. Pershey, D. Radford, R. Rapp, H. Ray, J. Raybern, O. Razuvaeva, D. Reyna, G. C. Rich, D. Rudik, J. Runge, D. J. Salvat, K. Scholberg, A. Shakirov, G. Simakov, G. Sinev, W. M. Snow, V. Sosnovtsev, B. Suh, R. Tayloe, K. Tellez-Giron-Flores, R. T. Thornton, I. Tolstukhin, J. Vanderwerp, R. L. Varner, C. J. Virtue, G. Visser, C. Wiseman, T. Wongjirad, J. Yang, Y. -R. Yen, J. Yoo, C. -H. Yu, J. Zettlemoyer

摘要:

相干弹性中微子-核散射(CEvNS)是能量为$E_ν< 100$ MeV的中微子的主要散射通道。我们报告的限制,这个过程中使用的29公斤CENNS-10液氩探测器位于27.5米的橡树岭国家实验室Sputterus中子源(SNS)汞目标与$4.2\times 10^{22}$质子的目标上的工程运行中收集的数据。该数据集产生$< 7.4$观测到的CEvNS事件,这意味着该过程的横截面,在SNS π介子静止衰变通量上平均为$<3.4 \times 10^{-39}$ cm $^{2}$,这是标准模型预测的两倍内的极限。这是第一个限制CEvNS从氩核,并确认了早期的CsI非标准中微子相互作用的限制,从合作。这一运行证明了正在进行的实验努力的可行性,以检测与液态氩CEvNS。

英文摘要:

Coherent elastic neutrino-nucleus scattering (CEvNS) is the dominant neutrino scattering channel for neutrinos of energy $E_ν< 100$ MeV. We report a limit for this process using data collected in an engineering run of the 29 kg CENNS-10 liquid argon detector located 27.5 m from the Oak Ridge National Laboratory Spallation Neutron Source (SNS) Hg target with $4.2\times 10^{22}$ protons on target. The dataset yielded $< 7.4$ observed CEvNS events implying a cross section for the process, averaged over the SNS pion decay-at-rest flux, of $<3.4 \times 10^{-39}$ cm$^{2}$, a limit within twice the Standard Model prediction. This is the first limit on CEvNS from an argon nucleus and confirms the earlier CsI non-standard neutrino interaction constraints from the collaboration. This run demonstrated the feasibility of the ongoing experimental effort to detect CEvNS with liquid argon.

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