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Fan, Ying-Ying; Wang, Wen-Fei; Xiao, Z. J.

doi:10.1103/physrevd.89.014030

Cited by 25 publications

(13 citation statements)

References 44 publications

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“…For more details see Refs. [81][82][83][84]. One can see from the theoretical predictions as listed in Table I that the pQCD predictions for the form factors of B → (π, K, D) and B s → K transitions at q 2 = 0 generally agree well with those from LCSRs [44,108] within one standard deviation.…”

Section: The Extrapolation Of the Form Factorsmentioning

confidence: 64%

The semileptonic decays of B/B s meson in the perturbative QCD approach: a short review

et al. 2014

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In this short review, we present the current status about the theoretical and experimental studies for some important semileptonic decays of B/B s mesons. We firstly gave a brief introduction for the experimental measurements for B/B s → P (l + l − , l −ν l , νν) decays, the BaBar's R(D) and R(D * ) anomaly, the P ′ 5 deviation for B 0 → K * 0 µ + µ − decay. We then made a careful discussion about the evaluations for the relevant form factors in the light-cone QCD sum rule (LCSRs), the heavy quark effective theory, and the perturbative QCD factorization approach. By using the form factors calculated in the perturbative (pQCD) approach, we then calculate and show the pQCD predictions for the decay rates of many semileptonic decays of B/B s mesons. We also made careful phenomenological analysis for these pQCD predictions and found, in general, the following points: (a) For all the considered B/B s semileptonic decays, the next-to-leading order (NLO) pQCD predictions for their decay rates agree well with the data and those from other different theoretical methods; (b) For R(D) and R(D * ), the pQCD predictions agree very well with the data, the BaBar's anomaly of R(D ( * ) ) are therefore explained successfully in the standard model by employing the pQCD approach; and (c) We defined several new ratios R l,τ D and R l,τ Ds , they may be more sensitive to the QCD dynamics which controls the B/B s → (D ( * ) , D ( * ) s ) transitions than the old ratios, we therefore strongly suggest LHCb and the forthcoming Super-B experiments to measure these new ratios.

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Section: The Extrapolation Of the Form Factorsmentioning

confidence: 64%

The semileptonic decays of B/B s meson in the perturbative QCD approach: a short review

et al. 2014

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“…The B s → D s lν decay has yet to be observed experimentally and consequently has received less theoretical attention than semileptonic decays of the B meson. The studies that have been undertaken for the B s → D s lν decay include calculations based on relativistic quark models [18,19], light-cone sum rules [20], perturbative factorization [21] and estimates using the Bethe-Salpeter method [22,23]. At present, there is one unquenched lattice calculation of the form factor Gð1Þ at zero recoil [11].…”

Section: Introductionmentioning

confidence: 99%

Bs→Dsℓν form factors and the fragmentation fraction ratio
Monahan
¹
,
Na
²
,
Bouchard
³

et al. 2017
Phys. Rev. D
47
10
72
0
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We present a lattice quantum chromodynamics determination of the scalar and vector form factors for the B s → D s lν decay over the full physical range of momentum transfer. In conjunction with future experimental data, our results will provide a new method to extract jV cb j, which may elucidate the current tension between exclusive and inclusive determinations of this parameter. Combining the form factor results at nonzero recoil with recent HPQCD results for the B → Dlν form factors, we determine the ratios f

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“…The perturbative QCD (pQCD) [20,21] is one of the recently developed theoretical tools based on QCD to deal with the nonleptonic and semileptonic B decays. So far the semileptonic B u,d,s,c decays have been studied systematically in the pQCD approach [22][23][24][25]. One may refer to the review paper [26] and the references therein.…”

Section: Br(b +mentioning

confidence: 99%

Semileptonic decays of $$B_c$$ B c meson to S-wave charmonium states in the perturbative QCD approach

et al. 2016

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Inspired by the recent measurement of the ratio of B c branching fractions to J/ψπ + and J/ψμ + ν μ final states at the LHCb detector, we study the semileptonic decays of B c meson to the S-wave ground and radially excited 2S and 3S charmonium states with the perturbative QCD approach. After evaluating the form factors for the transitions B c → P, V , where P and V denote pseudoscalar and vector S-wave charmonia, respectively, we calculate the branching ratios for all these semileptonic decays. The theoretical uncertainty of hadronic input parameters are reduced by utilizing the light-cone wave function for the B c meson. It is found that the predicted branching ratios range from 10 −7 up to 10 −2 and could be measured by the future LHCb experiment. Our prediction for the ratio of branching fractionsis in good agreement with the data. For B c → V lν l decays, the relative contributions of the longitudinal and transverse polarization are discussed in different momentum transfer squared regions. These predictions will be tested on the ongoing and forthcoming experiments.

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Study ofB¯s0→(Ds+,Ds*+<

Abstract: TheB 0 s → D ( * )+ s l −ν l semileptonic decays were calculated in the framework of the standard model (SM) by employing the perturbative QCD (pQCD) factorization approach. We defined four ratios of the branching ratios of the considered decays R(D

Cited by 25 publications

References 44 publications

The semileptonic decays of B/B s meson in the perturbative QCD approach: a short review

The semileptonic decays of B/B s meson in the perturbative QCD approach: a short review

Bs→Dsℓν form factors and the fragmentation fraction ratio
Monahan
¹
,
Na
²
,
Bouchard
³

et al. 2017
Phys. Rev. D
47
10
72
0
View full text Add to dashboard Cite

Semileptonic decays of $$B_c$$ B c meson to S-wave charmonium states in the perturbative QCD approach

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Study ofB¯s0→(Ds+,Ds*+<

Abstract: TheB 0 s → D ( * )+ s l −ν l semileptonic decays were calculated in the framework of the standard model (SM) by employing the perturbative QCD (pQCD) factorization approach. We defined four ratios of the branching ratios of the considered decays R(D

Cited by 25 publications

References 44 publications

The semileptonic decays of B/B s meson in the perturbative QCD approach: a short review

The semileptonic decays of B/B s meson in the perturbative QCD approach: a short review

Bs→Dsℓν form factors and the fragmentation fraction ratio Monahan1, Na2, Bouchard3 et al. 2017Phys. Rev. D4710720View full textAdd to dashboardCite

Semileptonic decays of $$B_c$$ B c meson to S-wave charmonium states in the perturbative QCD approach

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Product

Resources

About

Bs→Dsℓν form factors and the fragmentation fraction ratio
Monahan
¹
,
Na
²
,
Bouchard
³

et al. 2017
Phys. Rev. D
47
10
72
0
View full text Add to dashboard Cite