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Advances in High Energy Physics
Volume 2012 (2012), Article ID 494031, 18 pages
http://dx.doi.org/10.1155/2012/494031
Research Article

𝐵 𝐽 / 𝜓 𝐾 ( 1 2 7 0 ) and 𝐵 𝐽 / 𝜓 𝐾 ( 1 4 0 0 ) Decays in QCD Factorization Approach

Physics Department, Semnan University, P.O. Box 35195-363, Semnan 35351, Iran

Received 10 October 2011; Revised 4 December 2011; Accepted 29 December 2011

Academic Editor: Ira Rothstein

Copyright © 2012 Mahboobeh Sayahi and Hossein Mehraban. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The hadronic 𝐵 𝐽 / 𝜓 𝐾 ( 1 2 7 0 ) and 𝐵 𝐽 / 𝜓 𝐾 ( 1 4 0 0 ) has been analyzed in “QCD factorization” approach and generalized factorization. The effective coefficients 𝑎 𝑖 have been calculated for three helicity states = 0 , + , which give three different contribution of amplitudes. We consider that J/ψ behaves as a light meson in compared to 𝐵 meson. For 𝐵 + 𝐽 / 𝜓 𝐾 + ( 1 2 7 0 ) and 𝐵 + 𝐽 / 𝜓 𝐾 + ( 1 4 0 0 ) , experimental data of branching ratios are (1.8 ± 0.5) × 10−3 and <5 × 10−4, respectively. Our best obtained results are (1.79 ± 0.01) × 10−3 at θ = 58° and (1.42 ± 0.01) × 10−3 at θ = 32° for 𝐵 + 𝐽 / 𝜓 𝐾 + ( 1 2 7 0 ) decay. And we have 4.27 × 10−4 at θ = 58° and 3.45 × 10−4 at θ = 32° for 𝐵 + 𝐽 / 𝜓 𝐾 + ( 1 4 0 0 ) , which are in agreement with experiment.