New Process for Charged Lepton Flavor Violation Searches: μ-e- → e-e- in a Muonic Atom

被引：28
作者：
Koike, Masafumi [1 ]
Kuno, Yoshitaka [2 ]
Sato, Joe [1 ]
Yamanaka, Masato [3 ]
机构：
[1] Saitama Univ, Dept Phys, Sakura Ku, Saitama 3388570, Japan
[2] Osaka Univ, Dept Phys, Osaka 5600043, Japan
[3] Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba 2778582, Japan
来源：
PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 12期
关键词：
DECAY MU&->E&E&E; PHYSICS; LIMIT;
D O I：
10.1103/PhysRevLett.105.121601
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We propose a new process of mu(-)e(-) -> e(-)e(-) in a muonic atom for a quest of charged lepton flavor violation. The Coulomb attraction from the nucleus in a heavy muonic atom leads to significant enhancement in its rate, compared to mu(-)e(-) -> e(-)e(-). The upper limit of the branching ratio is estimated to be of the orders of O(10(-17)-10(-18)) for the photonic and the four-fermion interactions from the present experimental constraints. The search for this process could serve complementarily with the other relevant processes to shed light upon the nature of charged lepton flavor violation.
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页数：4
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