机构:
Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia
Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119991, RussiaRussian Acad Sci, Inst Nucl Res, Moscow 117312, Russia
Timiryasov, I.
[1
,2
]
机构:
[1] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia
[2] Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119991, Russia
[3] Dept Problems Phys & Power Engn, Dolgoprudnyi 141700, Moscow Region, Russia
来源:
JOURNAL OF HIGH ENERGY PHYSICS
|
2012年
/
08期
基金:
俄罗斯基础研究基金会;
关键词:
Rare Decays;
Large Extra Dimensions;
Quark Masses and SM Parameters;
D O I:
10.1007/JHEP08(2012)136
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:
We study flavour-violating processes which involve heavy B-and D-mesons and are mediated by Kaluza-Klein modes of gauge bosons in a previously suggested model where three generations of the Standard Model fermions originate from a single generation in six dimensions. We find the bound on the size R of the extra spatial dimensions 1/R greater than or similar to 3.3 TeV, which arises from the three-body decay B-s(0) -> K mu e. Due to the still too low statistics this bound is much less stringent than the constraint arising from K -> mu e, 1/R greater than or similar to 64 TeV, which was found in a previous work [1]. Nevertheless, we argue that a clear signature of the model would be an observation of K -> mu e and B-s(0) -> K mu e decays without observations of other flavour and lepton number changing processes at the same precision level.