Form factors of B, Bs → η (′) and D, Ds → η (′) transitions from QCD light-cone sum rules

Duplančić, Goran; Melić, Blaženka

doi:10.1007/jhep11(2015)138

Cited by 46 publications

(52 citation statements)

References 44 publications

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“…It is observed that our results are in good agreement with other quark models, especially with the CQM [28] and the LFQM [32]. Besides, quark model predictions for F + (0) of the D (s) → η (′) channels are in general higher than those obtained by LCSR [22,24] and LQCD [14]. This suggests that more studies of these form factors are needed.…”

Section: A Form Factorssupporting

confidence: 85%

“…. LCSR [24] 0.429 +0.165 Regarding the D (s) → V transition form factors A 1 , A 2 , and V , it is more interesting to compare their ratios at maximum recoil. The ratios are defined as follows:…”

Section: A Form Factorsmentioning

confidence: 99%

“…From the theoretical point of view, the calculation of hadronic form factors plays a crucial role in the study of charm semileptonic decays. This calculation is carried out by nonperturbative methods including lattice QCD (LQCD) [13][14][15], QCD sum rules [16][17][18], lightcone sum rules (LCSR) [19][20][21][22][23][24][25], and phenomenological quark models. Regarding the quark models used in studies of semileptonic D decays, one can mention the Isgur-Scora-Grinstein-Wise (ISGW) model [26] and its updated version ISGW2 [27], the constituent quark model (CQM) [28], the relativistic quark model based on the quasipotential approach [29], the chiral quark model [30], the light-front quark model (LFQM) [31][32][33], and the model based on the combination of heavy meson and chiral symmetries (HMχT) [34,35].…”

Section: Introductionmentioning

confidence: 99%

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Semileptonic D(s) -meson decays in the light of recent data

et al. 2018

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Inspired by recent improved measurements of charm semileptonic decays at BESIII, we study a large set of D(D s )-meson semileptonic decays where the hadron in the final state is one of D 0 , ρ, ω, η (′) in the case of D + decays, and D 0 , φ, K 0 , K * (892) 0 , η (′) in the case of D + s decays. The required hadronic form factors are computed in the full kinematical range of momentum transfer by employing the covariant confined quark model developed by us. A detailed comparison of the form factors with those from other approaches is provided. We calculate the decay branching fractions and their ratios, which show good agreement with available experimental data. We also give predictions for the forward-backward asymmetry and the longitudinal and transverse polarizations of the charged lepton in the final state.

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Section: A Form Factorssupporting

confidence: 85%

Section: A Form Factorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Semileptonic D(s) -meson decays in the light of recent data

et al. 2018

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“…FIG. 12: Form factor F + (q 2 ) for D + (s) → η (′) in our model, LCSR [42,43,46], LFQM [56], and CQM [51].…”

Section: Resultsmentioning

confidence: 99%

“…Several D (s) semileptonic decay form factors have been calculated using QCD sum rules (QCDSR) [36][37][38][39] and QCD light-cone sum rules (LCSR) [40][41][42][43][44][45]. Most of these studies focused on the channels D → π(K) and D (s) → η (′) .…”

Section: Form Factors In the Covariant Confining Quark Modelmentioning

confidence: 99%

Exclusive semileptonic decays of D and Ds mesons in the covariant confining quark model

et al. 2019

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Recently, the BESIII collaboration has reported numerous measurements of various D (s) meson semileptonic decays with significantly improved precision. Together with similar studies carried out at BABAR, Belle, and CLEO, new windows to a better understanding of weak and strong interactions in the charm sector have been opened. In light of new experimental data, we review the theoretical description and predictions for the semileptonic decays of D (s) to a pseudoscalar or a vector meson. This review is essentially an extended discussion of our recently published results obtained in the framework of the covariant confining quark model.

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Impact of Nonleptonic $$\bar{B}_{d,s}$$ Decay Modes on $$\bar{B} \rightarrow \bar{K}^* \mu ^+ \mu ^-$$ Process

Mohapatra

Sahoo

Giri

2021

Springer Proceedings in Physics

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We scrutinize the effect of nonleptonic B decay modes on the branching ratio and angular observables of B → K * μ + μ − process involving b → s quark level transition in the non-universal Z model. The new couplings are constrained by using the experimental limits on the branching ratios of B d → πK , B d → ρK , and B s → η η , K * K * nonleptonic processes. Using the allowed parameter space, we perform an angular analysis of the B → K * μ + μ − process. We observe significant impact of nonleptonic decay modes on B → K * μ + μ − observables.

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Form factors of B, Bs → η (′) and D, Ds → η (′) transitions from QCD light-cone sum rules

Cited by 46 publications

References 44 publications

Semileptonic D(s) -meson decays in the light of recent data

Semileptonic D(s) -meson decays in the light of recent data

Exclusive semileptonic decays of D and Ds mesons in the covariant confining quark model

Impact of Nonleptonic $$\bar{B}_{d,s}$$ Decay Modes on $$\bar{B} \rightarrow \bar{K}^* \mu ^+ \mu ^-$$ Process

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