Lepton flavour violation signal of the singly charged scalar singlet at the ILC

IF 3.4 3区物理与天体物理 Q2 PHYSICS, NUCLEAR

Journal of Physics G: Nuclear and Particle Physics Pub Date : 2024-07-08 DOI:10.1088/1361-6471/ad59ba

Chong-Xing Yue, Xiao-Chen Sun, Na-Qian Zhang, Yang-Yang Bu

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引用次数: 0

Abstract

The singly charged SU(2)_L singlet scalar is one of the very interesting new particles, as it can generate neutrino masses at loop level, produce contributions to various flavour observables. We study the possibility of detecting this kind of scalar predicted by the singly-charged scalar model at ILC via the lepton flavour violation process

e+e−→S+S−→μe+E

. Considering the constraints on the free parameters, we obtain the expected sensitivities of the ILC with the center of mass energy

s=1TeV

and the integrated luminosity

1.5 ab⁻¹ to the parameter space of the singly-charged scalar model. The prospective excluded mass range at 95% C.L. is M _S ≳ 470 GeV, 410 GeV for the branching ratio

Bμe

= 100% , 50%, respectively, while the scalar with M _S ≳ 300 GeV is excluded at 95% C.L. for

Bμe

= 30%.

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ILC 中单电荷标量单子的莱普顿味道违反信号

单电荷SU(2)L单子标量是非常有趣的新粒子之一，因为它可以在环水平上产生中微子质量，对各种味道观测指标产生贡献。我们研究了在 ILC 上通过轻子味道违反过程 e+e-→S+S-→μe+E 来探测单电荷标量模型所预言的这种标量的可能性。考虑到对自由参数的约束，我们得到了质心能量 s=1TeV 和综合光度 L= 1.5 ab-1 的 ILC 对单电标量模型参数空间的预期敏感性。95% C.L.时的预期排除质量范围分别是MS ≳ 470 GeV、410 GeV（分支比Bμe=100%、50%），而MS ≳ 300 GeV的标量在95% C.L.时被排除在外（Bμe=30%）。

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来源期刊

Journal of Physics G: Nuclear and Particle Physics 物理-物理：核物理

CiteScore

7.60

自引率

5.70%

发文量

105

审稿时长

1 months

期刊介绍： Journal of Physics G: Nuclear and Particle Physics (JPhysG) publishes articles on theoretical and experimental topics in all areas of nuclear and particle physics, including nuclear and particle astrophysics. The journal welcomes submissions from any interface area between these fields. All aspects of fundamental nuclear physics research, including: nuclear forces and few-body systems; nuclear structure and nuclear reactions; rare decays and fundamental symmetries; hadronic physics, lattice QCD; heavy-ion physics; hot and dense matter, QCD phase diagram. All aspects of elementary particle physics research, including: high-energy particle physics; neutrino physics; phenomenology and theory; beyond standard model physics; electroweak interactions; fundamental symmetries. All aspects of nuclear and particle astrophysics including: nuclear physics of stars and stellar explosions; nucleosynthesis; nuclear equation of state; astrophysical neutrino physics; cosmic rays; dark matter. JPhysG publishes a variety of article types for the community. As well as high-quality research papers, this includes our prestigious topical review series, focus issues, and the rapid publication of letters.