Predictions for semileptonic decay rates of charmed baryons in the quark confinement model

1991 ◽  
Vol 52 (1) ◽  
pp. 149-158 ◽  
Author(s):  
G. V. Efimov ◽  
M. A. Ivanov ◽  
V. E. Lyubovitskij
Keyword(s):  
Semileptonic Decay ◽  
Decay Rates ◽  
Quark Confinement ◽  
Charmed Baryons ◽  
Confinement Model

Form factors of semileptonic decays of heavy mesons in the quark confinement model

1992 ◽  
Vol 46 (9) ◽  
pp. 3817-3831 ◽  
Author(s):  
M. A. Ivanov ◽  
O. E. Khomutenko ◽  
T. Mizutani
Keyword(s):  
Form Factors ◽  
Semileptonic Decays ◽  
Quark Confinement ◽  
Heavy Mesons ◽  
Confinement Model

CONFINEMENT AND QUARK STRUCTURE OF LIGHT HADRONS

1989 ◽  
Vol 04 (08) ◽  
pp. 2031-2060 ◽  
Author(s):  
G. V. EFIMOV ◽  
M. A. IVANOV
Keyword(s):  
Weak Interactions ◽  
Point Of View ◽  
Low Energy ◽  
Unique Point ◽  
Quark Confinement ◽  
Quark Structure ◽  
Energy Physics ◽  
Confinement Model

We present a quark confinement model (QCM) for the description of the low energy physics of light hadrons (meson and baryons). The model is based on two hypotheses. First, the quark confinement is realized as averaging over some vacuum gluon fields which are believed to provide the confinement of any color objects. Second, hadrons are treated as collective colorless excitations of quark-gluon interactions. The description of strong, electromagnetic and weak interactions of mesons and baryons at the low energy is given from a unique point of view.

scholarly journals Ratios of heavy hadron semileptonic decay rates

2011 ◽  
Vol 83 (3) ◽  
Author(s):  
Michael Gronau ◽  
Jonathan L. Rosner
Keyword(s):  
Semileptonic Decay ◽  
Decay Rates ◽  
Heavy Hadron

scholarly journals Radiative Corrections to Semileptonic Decay Rates

2019 ◽  
Author(s):  
Christopher Sachrajda ◽  
Matteo Di Carlo ◽  
Guido Martinelli ◽  
Davide Giusti ◽  
Vittorio Lubicz ◽  
...  
Keyword(s):  
Semileptonic Decay ◽  
Decay Rates ◽  
Radiative Corrections

ANALYSIS OF THE DATA IN HEAVY FLAVOUR DECAYS

1990 ◽  
Vol 05 (05) ◽  
pp. 879-895 ◽  
Author(s):  
V. GUPTA ◽  
K.V.L. SARMA
Keyword(s):  
Branching Ratios ◽  
Decay Rates ◽  
Exchange Mechanism ◽  
Interference Effects ◽  
Charmed Baryons ◽  
Sum Rule ◽  
Decay Widths ◽  
The Spectator

The charmed and bottom hadron decays have been analyzed phenomenologically, keeping both the spectator and nonspectator contributions to the total decay rates. A sum rule relating the total decay widths of the four low-lying charmed baryons is given. It is pointed out that all the data which have become recently available can be understood in all cases with negligible Pauli interference effects but with important exchange- mechanism contributions. Predictions for the lifetimes of [Formula: see text] and [Formula: see text] together with the expected lifetime hierarchy for the bottom hadrons are given. The corresponding semileptonic branching ratios, where possible, are also predicted.

Four-body semi-leptonic decay rates of charmed baryons

1977 ◽  
Vol 20 (9) ◽  
pp. 303-307
Author(s):  
A. Fernandez-Pacheco ◽  
J. A. Grifols ◽  
E. M. Ferreira
Keyword(s):  
Leptonic Decay ◽  
Decay Rates ◽  
Charmed Baryons

scholarly journals Relations between b → cτν decay modes in scalar models

2020 ◽  
Vol 2020 (10) ◽  
Author(s):  
Stefan Schacht ◽  
Amarjit Soni
Keyword(s):  
Decay Mode ◽  
Semileptonic Decay ◽  
New Physics ◽  
Decay Rates ◽  
Scalar Form Factor ◽  
Scalar Form ◽  
Decay Modes ◽  
Pseudoscalar Mesons ◽  
Quark Level ◽  
Level Transition

Abstract As a consequence of the Ward identity for hadronic matrix elements, we find relations between the differential decay rates of semileptonic decay modes with the underlying quark-level transition b → cτν, which are valid in scalar models. The decay-mode dependent scalar form factor is the only necessary theoretical ingredient for the relations. Otherwise, they combine measurable decay rates as a function of the invariant mass-squared of the lepton pair q2 in such a way that a universal decay-mode independent function is found for decays to vector and pseudoscalar mesons, respectively. This can be applied to the decays $$ B\to {D}^{\ast}\tau v,{B}_s\to {D}_s^{\ast}\tau v,{B}_c\to J/\psi \tau v $$ B → D ∗ τv , B s → D s ∗ τv , B c → J / ψτv and B → Dτv, Bs → Dsτv, Bc → ηcτv, with implications for R(D(*)), $$ R\left({D}_s^{\left(\ast \right)}\right) $$ R D s ∗ , R(J/ψ), R(ηc), and ℬ(Bc → τv). The slope and curvature of the characteristic q2-dependence is proportional to scalar new physics parameters, facilitating their straight forward extraction, complementary to global fits.

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