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

High Energy Physics - Phenomenology 2009-11-07 v1
Authors: N. G. Deshpande , Nita Sinha , Rahul Sinha
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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

weak phase gamma isospin analysis B decays Dalitz plot time-dependent asymmetry electroweak penguin

Cite

@article{arxiv.hep-ph/0207257,
  title  = {Weak Phase gamma Using Isospin Analysis and Time Dependent Asymmetry in B_d -> K_s pi^+ pi^-},
  author = {N. G. Deshpande and Nita Sinha and Rahul Sinha},
  journal= {arXiv preprint arXiv:hep-ph/0207257},
  year   = {2009}
}

Comments

11 pages, 1 figure

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