First evaluation of meson and τ lepton spectra and search for heavy neutral leptons at ILC beam dump

被引：3

作者：

Nojiri, Mihoko M. ^{[1
,2
,3
]}

Sakaki, Yasuhito ^{[2
,4
]}

Tobioka, Kohsaku ^{[1
,5
]}

Ueda, Daiki ^{[6
]}

机构：

[1] High Energy Accelerator Res Org KEK, Theory Ctr, Ibaraki 3050801, Japan

[2] Grad Univ Adv Studies Sokendai, 1-1 Oho, Tsukuba, Ibaraki 3050801, Japan

[3] Univ Tokyo, Kavli IPMU WPI, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778583, Japan

[4] High Energy Accelerator Res Org KEK, Radiat Sci Ctr, Ibaraki 3050801, Japan

[5] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA

[6] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2022年 / 2022卷 / 12期

关键词：

New Light Particles; Specific BSM Phenomenology; Neutrino Interactions; PROCESSES INVOLVING NEUTRINOS; CROSS-SECTIONS; GENERAL-THEORY; DECAYS; VERSION; MASSES; BOUNDS; TESTS;

D O I：

10.1007/JHEP12(2022)145

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

A beam dump experiment can be seamlessly added to the proposed Inter- national Linear Collider (ILC) program because the high energy electron beam should be dumped after the collision point. The ILC beam dump experiment will provide an excellent opportunity to search for new long-lived particles. Since many of them can be produced by a rare decay of standard model particles, we evaluate spectra of the mesons and tau lepton at the decay based on the PHITS and PYTHIA8 simulations. As a motivated physics case, we study the projected sensitivity of heavy neutral leptons at the ILC beam dump experiment. The heavy neutral leptons can also be produced via deep inelastic scattering and Z boson decay at the ILC main detector, which we include in the projection. With the multi-track signal, the reach would be greatly extended in mass and coupling, even compared with the other proposed searches.

引用

页数：41

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