Annihilation contributions in B→K1γ decay in next-to-leading order in LEET and CP-asymmetry

2006/04/04 by M. Jamil Aslam · 2 citations
Physics and Astronomy · #Neutrino Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1140/epjc/s10052-006-0151-0

published as Eur.Phys.J.C49:651-656,2007 · 12 pages, 10 figures

arxiv created 2006/04/04 · openalex publication_date 2006/12/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29

Abstract

The effect of weak annihilation and u-quark penguin contribution on the branching ratio B -> K₁ gamma at next-to-leading order of alpha_s are calculated using LEET approach. It is shown that the value of LEET form factor remains the same in the range of unitarity triangle phase alpha favored by the Standard Model. CP-asymmetry for above mentioned decay has been calculated and its suppression due to the hard spectator correction has also been incorporated. In addition, the sensitivity of the CP-asymmetry on the underlying parameters has been discussed.

Citations

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)

Cited by

• B −→K 1 *− (1270)(→ρ 0 K −)ℓ + ℓ − in LEET
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