The light sgoldstino phenomenology: explanations for the muon (g-2) deviation and KOTO anomaly

被引：7
作者：
Liu, Xuewen [1 ]
Li, Ying [1 ,3 ]
Li, Tianjun [4 ,5 ]
Zhu, Bin [1 ,2 ]
机构：
[1] Yantai Univ, Dept Phys, Yantai 264005, Peoples R China
[2] Chung Ang Univ, Dept Phys, Seoul 06974, South Korea
[3] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
[4] Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
[5] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2020年 / 2020卷 / 10期
基金：
新加坡国家研究基金会; 中国国家自然科学基金;
关键词：
Supersymmetry Phenomenology; SEARCH;
D O I：
10.1007/JHEP10(2020)197
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：
In this work, we study the long-standing experimental anomaly in muon (g -2) and also recent anomalous excess in KL ->pi 0+vv at the J-PARC KOTO experiment with sgoldstino. After supersymmetry breaking, the interactions between quarks and sgoldstino (s) make the decays K -> pi + s sizable through loop diagrams, which affects the measurements of decays K -> pi + invisible. Furthermore, the couplings between photons and sgoldstino contribute to a(mu) as well as the bino-slepton contribution. With satisfying all known experimental constraints such as from NA62, E949, E137, Orsay, KTEV and CHARM experiments, these two anomalies can be explained simultaneously. The mass of CP-even sgoldstino is close to the neutral pion mass which does not violate the Grossman-Nir bound. The parameter space can be further tested in future NA62, DUNE experiments, as well as experiments in the LHC.
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页数：18
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