| Vu b | and B → η(′) form factors in covariant light-front approach

Chuan Hung Chen, Yue Long Shen, Wei Wang

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Abstract

B → (π, η, η) transition form factors are investigated in the covariant light-front approach. With theoretical uncertainties, we find that B → (π, η, η) form factors at q2 = 0 are f+(π, η, η′) (0) = (0.245- 0.001+ 0.000 ± 0.011, 0.220 ± 0.009 ± 0.009, 0.180 ± 0.008- 0.007+ 0.008) for vector current and fT(π, η, η′) (0) = (0.239- 0.003 - 0.018+ 0.002 + 0.020, 0.211 ± 0.009- 0.015+ 0.017, 0.173 ± 0.007- 0.013+ 0.014) for tensor current, respectively. With the obtained q2-dependent f+π (q2) and observed branching ratio (BR) for over(B, ̄)d → π+ ℓ over(ν, ̄), the Vu b is found as

Original languageEnglish
Pages (from-to)118-123
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume686
Issue number2-3
DOIs
Publication statusPublished - 2010 Mar 22

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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