Search for the B s 0aEuro,a†'aEuro∫e + e - and B d 0aEuro,a†'aEuro∫e + e - Decays in Flavor-Changing Z' Model

被引：1
|
作者：
Banerjee, D. [1 ]
Dharai, C. [1 ]
Sahoo, S. [1 ]
机构：
[1] Natl Inst Technol, Dept Phys, Durgapur 713209, W Bengal, India
来源：
BRAZILIAN JOURNAL OF PHYSICS | 2015年 / 45卷 / 05期
关键词：
B mesons; Neutral currents; Models beyond the standard model; Z ' boson; NEUTRAL-CURRENT; STANDARD MODEL; CP ASYMMETRIES; RARE DECAYS; GAUGE BOSON; PHYSICS; MASS; CONSTRAINTS; PREDICTION; COLLISIONS;
D O I：
10.1007/s13538-015-0346-7
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The precise prediction of the branching ratios of the very rare decays B (s) (0) -> aEuro,e (+) e (-) and B (d) (0) -> aEuro parts per thousand e (+) e (-) is an important ingredient for high energy research beyond standard model (SM). Recently, the CDF collaboration has reported upper limits for the branching ratios B ( B (s) (0) -> aEuro parts per thousand e (+) e (-) ) < 2.8 x 10(-aEuro parts per thousand 7) and B ( B (d) (0) -> aEuro parts per thousand e (+) e (-) )aEuro,< aEuro,8.3 xaEuro,10(-aEuro parts per thousand 8) at 90 % confidence level. These branching ratios are approximately seven orders of magnitude larger than the SM predictions, providing in this way a direction in which the SM could be extended. In this paper, the B (s) (0) -> aEuro,e (+) e (-) and B (d) (0) -> aEuro parts per thousand e (+) e (-) rare decays in flavor-changing Z' model are studied. Our estimated branching ratios are enhanced from their SM values and provide signals for new physics.
引用
收藏
页码：545 / 549
页数：5
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