Erratum to: Branching fractions of semileptonic D and 
                $$D_s$$
                
                    
                        
                            D
                            s
                        
                    
                
             decays from the covariant light-front quark model

Cheng, H. P.; Kang, Xian-Wei

doi:10.1140/epjc/s10052-017-5423-3

Cited by 35 publications

(21 citation statements)

References 1 publication

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“…Table II shows the comparison of our BF to various theoretical calculations of D þ → ωμ þ ν μ decay. Our BF is consistent with the predicted values based on the LFQM, CCQM, and LCSR methods [14,[16][17][18], but differs from those based on the χUA [15] and RQM [19] methods by 2.5σ and 1.5σ, respectively. Combining the B D þ →ωμ þ ν μ measured in this work with the world average B PDG D þ →ωe þ ν e ¼ ð16.9 AE 1.1Þ × 10 −4 [12,32,38], we obtain the BF ratio to be B D þ →ωμ þ ν μ =B PDG D þ →ωe þ ν e ¼ 1.05 AE 0.14.…”

Section: 773supporting

confidence: 88%

“…It agrees with the standard model predictions (0.93-0.99) [14][15][16][17]19] within uncertainties, and implies no violation of e-μ LFU found with current statistics.…”

Section: 773supporting

confidence: 86%

“…Although this decay was theoretically predicted before 1990 [13], it has never been experimentally confirmed yet to date. Since 2015, different theoretical approaches, e.g., light-front quark model (LFQM) [14], recalled chiral unitary approach (χUA) [15], covariant confined quark model (CCQM) [16], light-cone QCD sum rules (LCSR) [17,18], and relativistic quark model (RQM) [19], were adopted to investigate D þ → ωμ þ ν μ . The predicted BFs range between ð1.78-2.46Þ × 10 −3 [14][15][16][17][18][19], corresponding to the BF ratios B D þ →ωμ þ ν μ = B D þ →ωe þ ν e of (0.93-0.99).…”

mentioning

confidence: 99%

“…Comparison of the BFs between D þ → ωe þ ν e and D þ → ωμ þ ν μ .CCQM[14] χUA[15] LFQM[16] LCSR[17] LCSR[18] RQM[19] MeasurementB D þ →ωμ þ ν μ (×10 AE 1.1 [12] B D þ →ωμ þ ν μ =B PDG D þ →ωe þ ν e…”

mentioning

confidence: 99%

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Observation of the semimuonic decay D+→ωμ+νμ

Ablikim¹,

Adlarson²,

Biernat³

et al. 2020

Phys. Rev. D

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We report the first observation of the semimuonic decay D þ → ωμ þ ν μ using an e þ e − collision data sample corresponding to an integrated luminosity of 2.93 fb −1 collected with the BESIII detector at a center-of-mass energy of 3.773 GeV. The absolute branching fraction of the D þ → ωμ þ ν μ decay is measured to be B D þ →ωμ þ ν μ ¼ ð17.7 AE 1.8 stat AE 1.1 syst Þ × 10 −4. Its ratio with the world average value of the branching fraction of the D þ → ωe þ ν e decay probes lepton flavor universality and it is determined to be B D þ →ωμ þ ν μ =B PDG D þ →ωe þ ν e ¼ 1.05 AE 0.14, in agreement with the standard model expectation within one standard deviation.

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Section: 773supporting

confidence: 88%

“…It agrees with the standard model predictions (0.93-0.99) [14][15][16][17]19] within uncertainties, and implies no violation of e-μ LFU found with current statistics.…”

Section: 773supporting

confidence: 86%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Observation of the semimuonic decay D+→ωμ+νμ

Ablikim¹,

Adlarson²,

Biernat³

et al. 2020

Phys. Rev. D

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show abstract

“…Our fitting result is consistent with these theoretical calculations and presents a good consistency with the previous fitting result, but is with higher precision. f K + (0) also can be determined from such as light-cone sum rules [39] and the light front quark model [40].…”

Section: Determinations Of F Kmentioning

confidence: 99%

Determinations of the form factors of semileptonic $$D\rightarrow K$$ D → K decays and leptoquark constraints

Zhang

Yue

2018

Eur. Phys. J. C

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By analyzing all existing measurements for D → K + ν (= e, μ) decays, we find that the determinations of both the vector form factor f K + (q 2) and scalar form factor f K 0 (q 2) for semileptonic D → K decays from these measurements are feasible. By taking the parameterization of the one order series expansion of the f K + (q 2) and f K 0 (q 2), f K + (0)|V cs | is determined to be 0.7182 ± 0.0029, and the shape parameters of f K + (q 2) and f K 0 (q 2) are r +1 = −2.16 ± 0.007 and r 01 = 0.89 ± 3.27, respectively. Combining with the average f K + (0) of N f = 2 + 1 and N f = 2 + 1 + 1 lattice calculaltion, the |V cs | is extracted to be 0.964 ± 0.004 ± 0.019 where the first error is experimental and the second theoretical. Alternatively, the f K + (0) is extracted to be 0.7377 ± 0.003 ± 0.000 by taking the |V cs | as the value from the global fit with the unitarity constraint of the CKM matrix. Moreover, using the obtained form factors by N f = 2 + 1 + 1 lattice QCD, we re-analyze these measurements in the context of new physics. Constraints on scalar leptoquarks are obtained for different final states of semileptonic D → K decays.

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A comprehensive study on the semileptonic decay of heavy flavor mesons

Zhang

Kang

Guo

et al. 2021

J. High Energ. Phys.

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The semileptonic decay of heavy flavor mesons offers a clean environment for extraction of the Cabibbo-Kobayashi-Maskawa (CKM) matrix elements, which describes the CP-violating and flavor changing process in the Standard Model. The involved form factors where the dynamical information is encoded play an essential role in achieving any conclusive statement. That is, the knowledge of the form factors should be under good control, requiring one to examine more observables in addition to the branching fraction. In this paper, we provide the mean value and the q2-dependent shape for further observables [differential decay distribution (dΓ/dq2), forward-backward asymmetry $$ \left({\mathcal{A}}_{FB}^{ls}\right) $$ A FB ls , longitudinal $$ \left({P}_L^l\right) $$ P L l and transverse $$ \left({P}_T^l\right) $$ P T l polarization of a charged lepton, longitudinal polarization of a vector meson in the final state $$ \left({F}_L^l(V)\right) $$ F L l V , leptonic convexity parameter $$ \left({C}_F^l\right) $$ C F l , and trigonometric moments $$ \left({W}_i^l\right) $$ W i l in the decay of D(s) and B(s) to P/Vl+νl (l = e, μ or τ)], based on the predictions of the relevant form factors from the covariant light-front quark model. P and V denote the pseudoscalar and vector meson, respectively. As a comparison, we find a good agreement with the results from the covariant confining quark model and the relativistic quark model in the literature. As it has been observed that the $$ {P}_L^l $$ P L l and $$ {F}_L^l(V) $$ F L l V are crucial quantities to discriminate various New Physics models, the reexamination of these observables from a different method is also essential and necessary.

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Erratum to: Branching fractions of semileptonic D and $$D_s$$ D s decays from the covariant light-front quark model

Cited by 35 publications

References 1 publication

Observation of the semimuonic decay D+→ωμ+νμ

Observation of the semimuonic decay D+→ωμ+νμ

Determinations of the form factors of semileptonic $$D\rightarrow K$$ D → K decays and leptoquark constraints

A comprehensive study on the semileptonic decay of heavy flavor mesons

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