Branching ratios of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>B</mml:mi><mml:mi>c</mml:mi></mml:msub></mml:math>meson decaying to vector and axial-vector mesons

Dhir, Rohit; Kim, C. S.

doi:10.1103/physrevd.87.034004

Cited by 8 publications

(8 citation statements)

References 78 publications

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“…Note that we have dropped an overall phase factor i which is irrelevant for the calculation of the decay widths. Other results, such as QCDSR [31], ISGW II [39], and NRQCD [40], are also converted into the numbers according to our definitions in this paper and are listed in Table II. As indicated in Table II, the results evaluated in the different models are roughly comparable.…”

Section: Mass(gevmentioning

confidence: 99%

“…Theoretically, essential to the study of the semileptonic decays is the calculation of the invariant form factors describing the corresponding hadronic transitions. In the literature, a wide range of various approaches has been used to compute the B c → X transition form factors, such as the QCD sum rules (QCDSR) [30,31], the covariant light-front quark model (LFQM) [32], the renormalization group method (RGM) [33], the relativistic constituent quark model (RCQM) [34], relativistic quark model (RQM) [35], the nonrelativistic quark model (NRQM) [36], the Bethe-Salpeter approach (BS) [37], the relativistic quark model based on the quasipotential approach (RQMQP) [38], and the Isgur-Scora-Grinstein-Wise II model (ISGW II) [39]. More recently, the relativistic corrections to the form factors of the B c meson into P -wave orbitally excited charmonium have been investigated using the nonrelativistic QCD effective theory (NRQCD) [40].…”

Section: Introductionmentioning

confidence: 99%

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Semileptonic decays of Bc meson to P -wave charmonium states

Rui

Zhang

2018

Phys. Rev. D

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Inspired by a series of unexpected measurements of semileptonic decays mediated via b → c charged current interactions, we explore semileptonic Bc decays to the four lightest P -wave charmonium states, χc0, χc1, χc2, hc, by the recently developed improved perturbative QCD formalism, in which the charm quark mass effect is included both in the Sudakov factor and the hard kernels. We first directly evaluate the concerned transition form factors with vector and axial-vector currents in the region of small momentum transfer squared and then recast them to the full kinematical region by adopting the exponential parametrization. The obtained form factors are used to evaluate the semileptonic decay branching ratios, which can reach the order of 10 −3 , letting the corresponding measurement appear feasible. For a better analysis, a comparison of our results with the predictions of other models is provided. We also present the ratios between the tau and light lepton branching ratios and the polarization contributions in the relevant processes, which still need experimental tests in the ongoing and forthcoming experiments. Any significant deviations from the Standard Model results may provide some hints of new physics effects.

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Section: Mass(gevmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Semileptonic decays of Bc meson to P -wave charmonium states

Rui

Zhang

2018

Phys. Rev. D

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“…The axial-vector meson spectroscopy has extensively been studied in literatures [73][74][75][76][77]. Here, we list the important facts.…”

Section: A Spectroscopy Of Axial-vector Mesonsmentioning

confidence: 99%

“…We wish to remark here that numerical calculations of the factorizable branching ratios we use dipole q 2 dependence following HQET constraints. The decay constants of axial-vector mesons [73][74][75][76][77] used for numerical evaluations are given by…”

Section: B Factorizable Amplitudesmentioning

confidence: 99%

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Axial-vector emitting weak nonleptonic decays ofΩc0baryon

Dhir¹,

Kim²

2015

Phys. Rev. D

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The axial-vector emitting weak hadronic decays of Ω 0 c baryon are investigated. After employing the factorization and the pole model framework to predict their branching ratios, we derive the symmetry breaking effects on axial-vector-meson-baryon couplings and effects of flavor dependence on baryon-baryon weak transition amplitudes and, consequently, on their branching ratios. We found that the W-exchange process contributions dominate p-wave meson emitting decays of Ω 0 c baryon.

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The two-body hadronic decays of B c meson in the perturbative QCD approach: a short review

Xiao

Liu

2014

Chin. Sci. Bull.

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Along with the running of Large Hadron Collider (LHC) located at CERN in November 2009, a large number of data samples of B c meson have been collected and some hadronic B c decay modes have been measured by the LHC experiments. In view of the special and important roles of B c meson decays playing in the heavy flavor sector, we here give a short review on the status of two body hadronic decays B c → M 1 M 2 at both experimental and theoretical aspects. For the theoretical progresses, specifically, we will show lots of theoretical studies on two body hadronic B c decays involving pseudoscalar, vector, scalar, axial-vector, even tensor meson(s) in the final states by employing the perturbative QCD (pQCD) factorization approach. We will present a general analysis about the two-body hadronic decays of the heavy B c meson and also provide some expectations for the future developments.

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Branching ratios ofBcmeson decaying to vector and axial-vector mesons

Cited by 8 publications

References 78 publications

Semileptonic decays of Bc meson to P -wave charmonium states

Semileptonic decays of Bc meson to P -wave charmonium states

Axial-vector emitting weak nonleptonic decays ofΩc0baryon

The two-body hadronic decays of B c meson in the perturbative QCD approach: a short review

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