Chargino contributions in light of recent ε′/ε

被引：30
|
作者：
Endo, Motoi [1 ,2 ]
Mishima, Satoshi [1 ]
Ueda, Daiki [2 ]
Yamamoto, Kei [1 ]
机构：
[1] KEK, IPNS, Theory Ctr, Tsukuba, Ibaraki 3050801, Japan
[2] Grad Univ Adv Studies Sokendai, Tsukuba, Ibaraki 3050801, Japan
来源：
PHYSICS LETTERS B | 2016年 / 762卷
关键词：
FALSE VACUUM; DECAY; FATE;
D O I：
10.1016/j.physletb.2016.10.009
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Recently, the standard model prediction of epsilon'/epsilon was improved, and a discrepancy from the experimental results was reported at the 2.9 sigma level. We study the chargino contributions to Z penguin especially with the vacuum stability constraint. The vacuum decay rate is investigated, and it is shown that the discrepancy can be explained if superparticles are lighter than 4-6TeV. Correlations with B(K-L ->pi(0) nu(nu) over bar) and other experimental constraints are also discussed. (C) 2016 The Author(s). Published by Elsevier B.V.
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页码：493 / 497
页数：5
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