Charmless Bu,d,s→VT decays in perturbative QCD approach

C. S. Kim, Run Hui Li, Freddy Simanjuntak, Z. T. Zou

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Motivated by the experimental data, we study charmless B u,d,s→VT (V and T denote light vector and tensor mesons, respectively) decays in the perturbative QCD approach. The predictions of branching ratios, polarization fractions, and direct CP violations are given in detail. Specifically, within this approach we have calculated the polarization fractions and the branching ratios of B→φ(K2*-,K̄2*0) which agree well with the observed experimental data; however, the branching ratios of B→ω(K2*-,K̄2*0) are hard to be explained, where the polarization fractions are well accommodated. The tree dominated channels with a vector meson emitted have a longitudinal polarization fraction of 90%, while the penguin dominating ones have subtle polarization fractions. Fortunately, most branching ratios of Bu,d decays are of the order 10-6, which would be straightforward for experimental observations. For the Bs decays the branching ratios can reach the order of 10 -6 in tree dominated decays, while in penguin dominated decays those are of the order of 10-7 which require more experimental data to be observed.

Original languageEnglish
Article number014031
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume88
Issue number1
DOIs
Publication statusPublished - 2013 Jul 22

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quantum chromodynamics
decay
polarization
vector mesons
CP violation
mesons
tensors
predictions

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

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title = "Charmless Bu,d,s→VT decays in perturbative QCD approach",
abstract = "Motivated by the experimental data, we study charmless B u,d,s→VT (V and T denote light vector and tensor mesons, respectively) decays in the perturbative QCD approach. The predictions of branching ratios, polarization fractions, and direct CP violations are given in detail. Specifically, within this approach we have calculated the polarization fractions and the branching ratios of B→φ(K2*-,K̄2*0) which agree well with the observed experimental data; however, the branching ratios of B→ω(K2*-,K̄2*0) are hard to be explained, where the polarization fractions are well accommodated. The tree dominated channels with a vector meson emitted have a longitudinal polarization fraction of 90{\%}, while the penguin dominating ones have subtle polarization fractions. Fortunately, most branching ratios of Bu,d decays are of the order 10-6, which would be straightforward for experimental observations. For the Bs decays the branching ratios can reach the order of 10 -6 in tree dominated decays, while in penguin dominated decays those are of the order of 10-7 which require more experimental data to be observed.",
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Charmless Bu,d,s→VT decays in perturbative QCD approach. / Kim, C. S.; Li, Run Hui; Simanjuntak, Freddy; Zou, Z. T.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 88, No. 1, 014031, 22.07.2013.

Research output: Contribution to journalArticle

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AU - Kim, C. S.

AU - Li, Run Hui

AU - Simanjuntak, Freddy

AU - Zou, Z. T.

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