New physics in b → sμ+μ-: CP-violating observables

被引：64
作者：
Alok, Ashutosh Kumar [1 ]
Datta, Alakabha [2 ]
Dighe, Amol [3 ]
Duraisamy, Murugeswaran [2 ]
Ghosh, Diptimoy
London, David [1 ,3 ]
机构：
[1] Univ Montreal, Montreal, PQ H3C 3J7, Canada
[2] Univ Mississippi, Dept Phys & Astron, University, MS 38677 USA
[3] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2011年 / 11期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Beyond Standard Model; B-Physics; ASYMMETRY;
D O I：
10.1007/JHEP11(2011)122
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 perform a comprehensive study of the impact of new-physics operators with different Lorentz structures on CP-violating observables involving the b -> s mu(+)mu(-) transition. We examine the effects of new vector-axial vector (VA), scalar-pseudoscalar (SP) and tensor (T) interactions on the CP asymmetries in the branching ratios and forward-backward asymmetries of (B) over bar (0)(s) -> mu(+)mu(-), (B) over bar (0)(d) -> X-s mu(+)mu(-), (B) over bar (0)(s) -> mu(+)mu(-)gamma, (B) over bar (0)(d) -> (K) over bar mu(+)mu(-), and (B) over bar (0)(d) -> (K) over bar*mu(+)mu(-). In (B) over bar (0)(d) -> (K) over bar*mu(+)mu(-) we also explore the direct CP asymmetries in the longitudinal polarization fraction f(L) and the angular asymmetries A(T)((2)) and A(LT), as well as the triple-product CP asymmetries A(T)((im)) and A(LT)((im)). We find that, in almost all cases, the CP-violating observables are sensitive only to new physics which involves VA operators. The VA new physics may therefore be unambiguously identified by a combined analysis of future measurements of these CP-violating observables.
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页数：23
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