Exploring the Weak Phase gamma in B⁺- -> pi K Decays

1999/04/13 by Matthias Neubert, Neubert, Matthias
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/9904321

6 pages, 1 figure, contains new results (!); invited talk at the 17th International Conference on Weak Interactions and Neutrinos, Cape Town, South Africa, 24-30 January 1999

arxiv created 1999/04/13 · arxiv updated 2009/11/30

Abstract

Measurements of the rates for the hadronic decays B⁺- -> pi K along with the CP-averaged B⁺- -> pi⁺- pi⁰ branching ratio can be used to bound and extract the weak phase gamma=-arg(V_ub). Using preliminary CLEO data, we obtain the bounds |gamma|>93 degrees at 1 sigma, and |gamma|>71 degrees at 90 % confidence level.

Related

• Determination of the weak phase gamma=arg(V_ub^*)
• Measurement of gamma using B -> K pi pi and B -> K K Kbar decays
• Extracting Weak Phases Cleanly from Charmless 3-Body B Decays
• Constraining gamma from K* pi and rho K Decays
• Learning γ from B → K π decays