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Exploring the lifetime frontier with a beam-dump experiment at CiADS by Chen, Liangwen; Du, Mingxuan; Sun, Zhiyu; Wang, Zeren Simon; Xie, Fang; Xie, Ju-Jun; Yang, Lei; Yu, Pei; Zhang, Yu is a scholarly article available to read on EtoBox.

What is Exploring the lifetime frontier with a beam-dump experiment at CiADS about?

We propose a beam-dump experiment (BDE) at the upcoming facility of China initiative Accelerator Driven System (CiADS), called CiADS-BDE, in order to search for long-lived particles (LLPs) predicted in various beyond-the-Standard-Model (BSM) theories. The experiment is to be located in the forward direction of the incoming low-energy proton beam at CiADS, leveraging the strong forward boost of the produced particles at the beam dump in general. The space between the dump and the detector is largely available, allowing for installation of veto materials and hence low levels of background events. We elaborate on the detector setup, and choose dark photon as a benchmark model for sensitivity study. We restrict ourselves to the signature of an electron-positron pair, and find that with 5 years' operation, unique, currently unexcluded parts of the parameter space for $\mathcal{O}(100)$ MeV dark-photon masses and $\mathcal{O}(10^{-9}\text{--}10^{-8})$ kinetic mixing can be probed at the CiADS-BDE. Furthermore, considering that there is no need to set up a proton beam specifically for this experiment and that the detector system requires minimal instrumentation, the experiment is supposed

Author

Chen, Liangwen; Du, Mingxuan; Sun, Zhiyu; Wang, Zeren Simon; Xie, Fang; Xie, Ju-Jun; Yang, Lei; Yu, Pei; Zhang, Yu

Published

2024

Language

EN