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NEW RESULT OF DIRECT CP VIOLATION IN B → π⁺π^-π⁺π^-

GANG LÜ

College of Science, Henan University of Technology, Zhengzhou, 450001, China

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ZHEN-HUA ZHANG

College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China

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XIU-YING LIU

College of Science, Henan University of Technology, Zhengzhou 450001, China

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LI-YING ZHANG

College of Science, Henan University of Technology, Zhengzhou 450001, China

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https://doi.org/10.1142/S0217751X11053626Cited by:10 (Source: Crossref)

Abstract

In the framework of factorization, based on the first-order of isospin violation, we study direct CP violation in the decay of including the effect of ρ–ω mixing. The CP violation depends strongly on Cabibbo–Kobayashi–Maskawa (CKM) matrix elements and the effective parameter, N_c. Recently, the experimental data for the branching ratios of are accurate and we can give the strong constraint on the range of N_c. We find that the CP violating asymmetry is large and ranges from -82% to -98% via ρ–ω mixing mechanism when the invariant mass of the π⁺π^- pair is in the vicinity of the ω resonance. We also discuss the possibility to observe the predicted CP violating asymmetries at the LHC.

Keywords:

PACS: 11.30.Er, 13.20.He, 12.39.-x

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