Weak Phase gamma Using Isospin Analysis and Time Dependent Asymmetry in B_d -> K_s pi^+ pi^-

Preprint

22 July 2002

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/0207257

Abstract

We present a method for measuring the weak phase gamma using isospin analysis of three body B decays into K pi pi channels. Differential decay widths and time dependent asymmetry in B_d -> K_s pi^+pi^- mode needs to be measured into even isospin pi pi states. The method can be used to extract gamma, as well as, the size of the electroweak penguin contributions. The technique is free from assumptions like SU(3) or neglect of any contributions to the decay amplitudes. By studying different regions of the Dalitz plot, it is possible to reduce the ambiguity in the value of gamma.

Keywords

DEPENDENT ASYMMETRY
ISOSPIN ANALYSIS
USING ISOSPIN
GAMMA USING
PHASE GAMMA
WEAK PHASE
B_D
K_S

All Related Versions

Version 1, 2002-07-22, ArXiv
Published version: Physical Review Letters, 90 (6), 061802.

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