Search for e→τ charged lepton flavor violation at the EIC with the ECCE detector
Search for e→τ charged lepton flavor violation at the EIC with the ECCE detector
复制标题
使用 ECCE 探测器在 EIC 处搜索 e-带电轻子味违规
DOI：
10.1016/j.nima.2023.168276
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Bai, X.
中科院分区：
文献类型：
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作者：
Zhang, J.-L.;Mantry, S.;Adkins, J.K.;Akiba, Y.;Albataineh, A.;Amaryan, M.;Arsene, I.C.;Gayoso, C. Ayerbe;Bae, J.;Bai, X.
摘要最近批准的电子-离子对撞机（EIC）将为研究带电轻子味破坏（CLFV）和其他新的物理方案提供一个独特的新机会。与存在非常严格限制的e Participy μ CLFV跃迁相比，e→ τ CLFV跃迁仍有相对较大的发现空间，可能由EIC探索。利用EIC综合色动力学实验（ECCE）的最新探测器设计和EIC的投影积分光度，我们发现DIS过程ep → τ X中产生的τ轻子有望得到高效的识别。第一个ECCE模拟研究，仅限于3-prong τ-衰变模式和标准模型背景的有限统计数据，估计EIC将能够将e→ τ CLFV的电流排斥限制提高一个数量级。ECCE探测器配置的极高顶点分辨率在τ识别中起着关键作用。
Abstract The recently approved Electron-Ion Collider (EIC) will provide a unique new opportunity for searches of charged lepton flavor violation (CLFV) and other new physics scenarios. In contrast to the e↔ μ CLFV transition for which very stringent limits exist, there is still a relatively large discovery space for the e→ τ CLFV transition, potentially to be explored by the EIC. With the latest detector design of ECCE (EIC Comprehensive Chromodynamics Experiment) and projected integral luminosity of the EIC, we find the τ-leptons created in the DIS process e p→ τ X are expected to be identified with high efficiency. A first ECCE simulation study, restricted to the 3-prong τ-decay mode and with limited statistics for the Standard Model backgrounds, estimates that the EIC will be able to improve the current exclusion limit on e→ τ CLFV by an order of magnitude. The very high vertex resolution of the ECCE detector configuration plays a critical role in τ identification.