Study of the semileptonic decay mode<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>D</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>→<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="normal">−</mml:mi></mml:mrow></mml:msup></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998

Jc, Anjos; Ja, Appel; Bean, A.; Sb, Bracker; Browder, T. E.; Lm, Cremaldi; Je, Duboscq; Elliott,; Co, Escobar; Estabrooks, P. G.; Mc, Gibney; Gf, Hartner; Pe, Karchin; Br, Kumar; Mj, Losty; Gj, Luste; Mantsch, P.; Jf, Martin; McHugh, S.; Menary,; Rj, Morrison; Nash, T.; P, Ong; Pinfold, J. L.; Punkar, G. D.; Purohit, M. V.; Raab,; Santoro, A.; Js, Sidhu; Sliwa, K.; Sokoloff, M. D.; Mh, Souza; Wj, Spalding; Me, Streetman; Ab, Stundia; Ms, Witherell

doi:10.1103/physrevlett.62.1587

Cited by 93 publications

(16 citation statements)

References 23 publications

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“…The entry others refers to total decay rates measured by Mark-III [1177], E653 [1178,1179], E687 [1180,1181], E691 [1182], BES II [1183,1184] and CLEO II [1185] Expt eters r 1 and r 2 for each individual measurement and for the combination are presented in Table 275. Measurements have been corrected with respect to the original ones using recent values from PDG [327].…”

Section: Combined Results For the D → K ν Channelmentioning

confidence: 99%

“…Events registered at the Υ (4S) energy corresponding to an integrated luminosity of 7 fb −1 were analyzed by CLEO III [1175]. Fixed target photo-production experiments performed also measurements of the normalized form factor distribution (FOCUS [1176]) and total decay rates (Mark-III [1177], E653 [1178,1179], E687 [1180,1181], E691 [1182], BES II [1183,1184], CLEO II [1185]). In the FOCUS fixed target photo-production experiment, D 0 semimuonic events were obtained from the decay of a D * + , with a kaon or a pion detected.…”

Section: Experimental Techniques and Resultsmentioning

confidence: 99%

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Averages of b-hadron, c-hadron, and $$\tau $$ τ -lepton properties as of summer 2016

et al. 2017

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This paper reports world averages of measurements of b-hadron, c-hadron, and τ -lepton properties obtained by the Heavy Flavour Averaging Group using results available before April 2021. In rare cases, significant results obtained several months later are also used. For the averaging, common input parameters used in the various analyses are adjusted (rescaled) to common values, and known correlations are taken into account. The averages include branching fractions, lifetimes, neutral meson mixing parameters, CP violation parameters, parameters of semileptonic decays, and Cabibbo-Kobayashi-Maskawa matrix elements. Selected world averages -continued from previous page. ∆Γ d /Γ d 0.001 ± 0.010 |q d /p d | 1.0010 ± 0.0008 ∆m s 17.765 ± 0.006 ps −1 ∆Γ s +0.084 ± 0.005 ps −1 |q s /p s | 1.0003 ± 0.0014 φ ccs s −0.049 ± 0.019 rad Unitarity-Triangle angle parameters sin2β ≡ sin2φ 1 0.699 ± 0.017 β ≡ φ 1 (22.2 ± 0.7) • −ηS φK 0 S 0.74 +0.11 −0.13 −ηS η K 0 0.63 ± 0.06 −ηS K 0 S K 0 S K 0 S 0.83 ± 0.17 φ s (φφ) −0.073 ± 0.115 ± 0.027 rad S B 0 s →K + K − , C B 0 s →K + K − (0.14 ± 0.03, 0.17 ± 0.03) −ηS J/ψ π 0 0.86 ± 0.14 −ηS D + D − 0.84 ± 0.12 −ηS J/ψ ρ 0 0.66 +0.13 −0.12 +0.09 −0.03(0.343 ± 0.002)% τ parameters, lepton universality, and |V us | g τ /g µ 1.0009 ± 0.0014 g τ /g e 1.0027 ± 0.0014 g µ /g e 1.0019 ± 0.0014* )0 s B ( * )0 s ) = (87.0 ± 1.7)% [34] measured as described in Ref. [35]. The proportions of the various production channels for non-strange B mesons have also been measured [22]. 4.3 b-hadron production fractions at high energy At high energy, all species of weakly decaying b hadrons may be produced, either directly or in strong and electromagnetic decays of excited b hadrons. Before 2010, it was assumed that the fractions of different species in unbiased samples of high-p T b-hadron jets where independent of whether they originated from Z decays, pp collisions at the Tevatron, or pp collisions at the LHC. This hypothesis was plausible under the condition Q 2 Λ 2 QCD , namely, that the square of the momentum transfer to the produced b quarks is large compared with the square of the hadronization energy scale. This hypothesis is correct in the limit p T → ∞, in which the production mechanism of a b hadron is completely described by the fragmentation of the b quark. For finite p T , however, there are interference effects of the production mechanism of the b quark and its hadronization. While formally suppressed by inverse powers of p T , these effects may be sizable, especially when the fragmentation probabilities are small as, e.g., in the case of b baryons. In fact, the available data show that the fractions depend on the kinematics of the produced b hadron. Both CDF and LHCb reported a p T dependence of the fractions, with the fraction of Λ 0 b baryons observed at low p T being enhanced with respect to that seen at LEP at higher p T . In our previous publication [1], we presented two sets of averages, one including only measurements performed at LEP, and another including only measurements performed ...

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Section: Combined Results For the D → K ν Channelmentioning

confidence: 99%

Section: Experimental Techniques and Resultsmentioning

confidence: 99%

Averages of b-hadron, c-hadron, and $$\tau $$ τ -lepton properties as of summer 2016

et al. 2017

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“…Our approach is different than in [7]- [8], where a pole dominance prescription for the q 2 dependence of the form factors was assumed, as in the data analysis of the semileptonic D 0 → K − [13], D + →K 0 [14] and D + →K * 0 [15], [16]. In contrast, we calculate the form factors directly from our Lagrangian.…”

Section: Form Factors For D → V /Pmentioning

confidence: 99%

“…The experimental data for the semileptonic decays D 0 → K − [13], D + → K 0 [14] and D + →K * 0 [15], [16] are unfortunately not good enough to clearly determine the q 2 dependence of the form factors. Experimentally what is known, apart from the branching ratios, are the form factors at one kinematical point, assuming a pole-type behaviour for all the form factors.…”

Section: Introductionmentioning

confidence: 99%

Effective model for charmed meson semileptonic decays

Bajc¹,

Fajfer²,

Oakes³

1996

Phys. Rev. D

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We analyze charm meson semileptonic decays using the measured ratios Γ L /Γ T and Γ + /Γ − from D →K * and the branching ratios for D →K * and D →K. First we introduce the light vector mesons in a model which combines the heavy quark effective Lagrangian and the chiral perturbation approach. We propose a method which predicts the behavior of the form factors. Using the available experimental data we determine the values of some model parameters and reproduce the observed branching ratios for D s → Φ, D s → (η + η ′ ) and D → π. We make predictions for the yet unmeasured branching ratios and polarization observables.

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“…It is important to understand this result before making predictions for the other yet unmeasured D → P 1 P 2 lν l decay modes. Furthermore, this could also be helpful in understanding of the D → P lν l [2,3] and D → V lν l data [4,5]. Two main issues arise in the description of D meson semileptonic decays.…”

Section: Introductionmentioning

confidence: 99%

Resonant and nonresonantD+→K−π+
Bajc
¹
,
Fajfer
²
,
Oakes
³

et al. 1998
Phys. Rev. D
16
0
27
0
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We analyze the semileptonic decay D ϩ →K Ϫ ϩ l ϩ l using an effective Lagrangian developed previously to describe the decays D→ Pl l and D→Vl l . Light vector mesons are included in the model which combines the heavy quark effective Lagrangian and chiral perturbation theory approach. The nonresonant and resonant contributions are compared. With no new parameters the model correctly reproduces the measured ratio ⌫ nres /⌫ nres ϩ res . We also present useful nonresonant decay distributions. Finally, a similar model, but with a modified current which satisfies the soft pion theorems at the expense of introducing another parameter, is analyzed and the results of the models are compared. ͓S0556-2821͑98͒02017-7͔

show abstract

Study of the semileptonic decay modeD0→K−
Anjos Jc¹,
Appel Ja²,
A. Bean³
et al.

Cited by 93 publications

References 23 publications

Averages of b-hadron, c-hadron, and $$\tau $$ τ -lepton properties as of summer 2016

Averages of b-hadron, c-hadron, and $$\tau $$ τ -lepton properties as of summer 2016

Effective model for charmed meson semileptonic decays

Resonant and nonresonantD+→K−π+
Bajc
¹
,
Fajfer
²
,
Oakes
³

et al. 1998
Phys. Rev. D
16
0
27
0
View full text Add to dashboard Cite

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Study of the semileptonic decay modeD0→K−Anjos Jc1, Appel Ja2, A. Bean3 et al.

Cited by 93 publications

References 23 publications

Averages of b-hadron, c-hadron, and $$\tau $$ τ -lepton properties as of summer 2016

Averages of b-hadron, c-hadron, and $$\tau $$ τ -lepton properties as of summer 2016

Effective model for charmed meson semileptonic decays

Resonant and nonresonantD+→K−π+Bajc1, Fajfer2, Oakes3 et al. 1998Phys. Rev. D160270View full textAdd to dashboardCite

Contact Info

Product

Resources

About

Study of the semileptonic decay modeD0→K−
Anjos Jc¹,
Appel Ja²,
A. Bean³
et al.

Resonant and nonresonantD+→K−π+
Bajc
¹
,
Fajfer
²
,
Oakes
³

et al. 1998
Phys. Rev. D
16
0
27
0
View full text Add to dashboard Cite