NEXT-White 探测器事件识别能力的演示
仪器与探测器
2020-01-29 v3 高能物理 - 实验
摘要
在搜寻无中微子双贝塔衰变的实验中，识别两个发射电子的可能性是排斥本底事件从而提升实验整体灵敏度的有力工具。本文中，我们利用 NEXT 实验首个地下运行探测器 NEXT-White 的数据，首次测量了基于双电子与单电子径迹不同事件特征的切割效率。使用 \TO 刻度源产生能量接近 1.6 MeV 的类信号与类本底事件，在背景接受度 下，获得信号效率 ，与蒙特卡洛模拟吻合良好。我们还通过蒙特卡洛模拟将该结果外推至无中微子双贝塔衰变能量区，所得结果显示背景排斥较较低能量处获得的结果有所改善。
引用
@article{arxiv.1905.13141,
title = {Demonstration of the event identification capabilities of the NEXT-White detector},
author = {NEXT Collaboration and P. Ferrario and J. M. Benlloch-Rodríguez and G. Díaz López and J. A. Hernando Morata and M. Kekic and J. Renner and A. Usón and J. J. Gómez-Cadenas and C. Adams and V. Álvarez and L. Arazi and I. J. Arnquist and C. D. R Azevedo and K. Bailey and F. Ballester and F. I. G. M. Borges and N. Byrnes and S. Cárcel and J. V. Carrión and S. Cebrián and E. Church and C. A. N. Conde and T. Contreras and J. Díaz and M. Diesburg and J. Escada and R. Esteve and R. Felkai and A. F. M. Fernandes and L. M. P. Fernandes and A. L. Ferreira and E. D. C. Freitas and J. Generowicz and S. Ghosh and A. Goldschmidt and D. González-Díaz and R. Guenette and R. M. Gutiérrez and J. Haefner and K. Hafidi and J. Hauptman and C. A. O. Henriques and P. Herrero and V. Herrero and Y. Ifergan and S. Johnston and B. J. P. Jones and L. Labarga and A. Laing and P. Lebrun and N. López-March and M. Losada and R. D. P. Mano and J. Martín-Albo and A. Martínez and G. Martínez-Lema and A. D. McDonald and F. Monrabal and C. M. B. Monteiro and F. J. Mora and J. Muñoz Vidal and P. Novella and D. R. Nygren and B. Palmeiro and A. Para and J. Pérez and F. Psihas and M. Querol and J. Repond and S. Riordan and L. Ripoll and Y. Rodríguez García and J. Rodríguez and L. Rogers and B. Romeo and C. Romo-Luque and F. P. Santos and J. M. F. dos Santos and A. Simón and C. Sofka and M. Sorel and T. Stiegler and J. F. Toledo and J. Torrent and J. F. C. A. Veloso and R. Webb and R. Weiss-Babai and J. T. White and K. Woodruff and N. Yahlali},
journal= {arXiv preprint arXiv:1905.13141},
year = {2020}
}
备注
Accepted by JHEP