Searching for new physics with B-decay fake triple products

被引：24
作者：
Datta, Alakabha [2 ]
Duraisamy, Murugeswaran [2 ]
London, David [1 ]
机构：
[1] Univ Montreal, Montreal, PQ H3C 3J7, Canada
[2] Univ Mississippi, Dept Phys & Astron, University, MS 38677 USA
来源：
PHYSICS LETTERS B | 2011年 / 701卷 / 03期
基金：
加拿大自然科学与工程研究理事会;
关键词：
B physics; Triple products; New physics; DIRECT CP VIOLATION; STRONG PHASES; ANGULAR-DISTRIBUTIONS; CHARMING PENGUINS; QCD FACTORIZATION; HEAVY-QUARK; CKM PHASES; POLARIZATION; ASYMMETRIES; B->VV;
D O I：
10.1016/j.physletb.2011.06.002
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In pure-penguin (b) over bar -> (s) over bar B -> V1V2 decays (V-1,V-2 are vector mesons), f(T)/f(L) congruent to 1 has been observed (f(T) (f(L)) is the polarization fraction of transverse (longitudinal) decays). Explanations of this unexpectedly large result have been given within the standard model (SM) and with new physics (NP). In this Letter, we show that these two explanations can be partially distinguished through the triple products (TP's) in these transitions. In particular, the SM predicts one of the two fake, CP-conserving TP's to be small (vertical bar A(T)((2))vertical bar <= 9%), while NP often gives larger values for vertical bar A(T)((2))vertical bar. We discuss the implications of the measurements of both fake TP's in B -> phi K* - the present data prefer an SM explanation of f(T)/f(L)- and provide the SM predictions for B-S(0) -> phi phi. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：357 / 362
页数：6
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