TY - JOUR
T1 - Analysis of B d,s mixing angles in the presence of new physics and an update of B s→K ̄0 *K0 *
AU - Descotes-Genon, Sébastien
AU - Matias, Joaquim
AU - Virto, Javier
PY - 2012/2/7
Y1 - 2012/2/7
N2 - We discuss a simple approach to measure the weak mixing angles s and d of the B s and B d systems in the presence of New Physics. We present a new expression that allows one to measure directly d,sNP if New Physics contributes significantly to the mixing only. We apply the method to specific penguin-mediated B→PP, B→PV and B→VV modes. We provide a very stringent and simple bound on the direct CP asymmetries of all these modes, the violation of which is a signal of New Physics in decay. Within the same theoretical framework, an updated prediction for the branching ratio of B s→K0 *K ̄0 * is presented, which can be compared with a recent LHCb analysis. © 2012 American Physical Society.
AB - We discuss a simple approach to measure the weak mixing angles s and d of the B s and B d systems in the presence of New Physics. We present a new expression that allows one to measure directly d,sNP if New Physics contributes significantly to the mixing only. We apply the method to specific penguin-mediated B→PP, B→PV and B→VV modes. We provide a very stringent and simple bound on the direct CP asymmetries of all these modes, the violation of which is a signal of New Physics in decay. Within the same theoretical framework, an updated prediction for the branching ratio of B s→K0 *K ̄0 * is presented, which can be compared with a recent LHCb analysis. © 2012 American Physical Society.
U2 - 10.1103/PhysRevD.85.034010
DO - 10.1103/PhysRevD.85.034010
M3 - Article
VL - 85
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
SN - 1550-7998
IS - 3
M1 - 034010
ER -