scholarly journals Exchange Current and Leptonic Decays of Baryons in the Quark Model

1968 ◽  
Vol 40 (2) ◽  
pp. 339-352
Author(s):  
Tsunehiro Kobayashi ◽  
Kimiaki Konno
Keyword(s):  
Quark Model ◽  
Exchange Current ◽  
Leptonic Decays ◽  
Decays Of Baryons

scholarly journals Spectra of Exclusive Semi-Leptonic Decays of B-Meson in the Covariant Oscillator Quark Model

1997 ◽  
Vol 98 (1) ◽  
pp. 159-167 ◽  
Author(s):  
M. Ishida ◽  
S. Ishida ◽  
M. Oda
Keyword(s):  
Quark Model ◽  
B Meson ◽  
Leptonic Decays

RADIATIVE DECAYS OF BARYONS IN A FIELD THEORETIC QUARK MODEL

1996 ◽  
Vol 11 (32) ◽  
pp. 5685-5700 ◽  
Author(s):  
A.R. PANDA ◽  
R.K. SAHOO
Keyword(s):  
Quark Model ◽  
Radiative Decay ◽  
Constituent Quark ◽  
Theoretical Calculations ◽  
Wave Functions ◽  
Radiative Decays ◽  
Quark Field ◽  
Decay Widths ◽  
Helicity Amplitudes ◽  
Decays Of Baryons

Radiative decays of baryons are considered in a field theoretic quark model of composite hadrons where the translationally invariant SU (6) hadron states are described by constituent quark field operators and harmonic oscillator wave functions. The constituent quark field operators of the model satisfying the equal time algebra are also Lorentz-boosted through a spin rotation to describe hadrons in motion. The model, like its earlier success in describing the different hadronic phenomena, in the present investigation without any free parameters, obtains the radiative decay widths and helicity amplitudes in reasonable agreement with other theoretical calculations as well as with the available experimental measurements.

scholarly journals Study on $$\Xi _{cc}\rightarrow \Xi _c$$ and $$\Xi _{cc}\rightarrow \Xi '_c$$ weak decays in the light-front quark model

2020 ◽  
Vol 80 (2) ◽  
Author(s):  
Hong-Wei Ke ◽  
Fang Lu ◽  
Xiao-Hai Liu ◽  
Xue-Qian Li
Keyword(s):  
Quark Model ◽  
Form Factors ◽  
Light Front ◽  
Initial State ◽  
Leptonic Decays ◽  
Weak Decays ◽  
The Future

Abstract In this work we study the weak decays of $$\Xi _{cc}\rightarrow \Xi _c$$Ξcc→Ξc and $$\Xi _{cc}\rightarrow \Xi '_c$$Ξcc→Ξc′ in the light-front quark model. Generally, a naive, but reasonable conjecture suggests that the cc subsystem in $$\Xi _{cc}$$Ξcc ( us pair in $$\Xi ^{(')}_c$$Ξc(′)) stands as a diquark with definite spin and color assignments. During the concerned processes, the diquark of the initial state is not a spectator, namely must be broken. A Racah transformation would decompose the original (cc)q into a combination of c(cq) components. Thus we may deal with the decaying c quark alone while keeping the (cq) subsystem as a spectator. With the re-arrangement of the inner structure we calculate the form factors numerically and then obtain the rates of semi-leptonic decays and non-leptonic decays, which will be measured in the future.

WEAK LEPTONIC DECAY OF LIGHT AND HEAVY PSEUDOSCALAR MESONS IN A FIELD-THEORETIC QUARK MODEL

1993 ◽  
Vol 08 (29) ◽  
pp. 2775-2783 ◽  
Author(s):  
L. MAHARANA ◽  
A. NATH ◽  
A. R. PANDA
Keyword(s):  
Harmonic Oscillator ◽  
Quark Model ◽  
Constituent Quark ◽  
Leptonic Decay ◽  
Decay Constants ◽  
Quark Masses ◽  
Leptonic Decays ◽  
Pseudoscalar Mesons ◽  
Oscillator Wave Function ◽  
Harmonic Oscillator Wave Function

Weak leptonic decays of light and heavy pseudoscalar mesons are studied in a field-theoretic quark model where the mesons are described by constituent quarks and antiquarks with a particular ansatz and a Harmonic oscillator wave function. With constituent quark masses and Harmonic oscillator radii for mesons as parameters of the model, decay constants are calculated and found as (fπ, fk, fD, fB) = (132 MeV , 161 MeV , 160 MeV , 115 MeV ) indicating a reasonable agreement with the experimental data wherever available. Partial decay widths and branching ratios for kinematically allowed leptonic decay processes are also estimated and compared with the experiments wherever available.

scholarly journals Electromagnetic and weak decays of baryons in the unquenched quark model

2018 ◽  
Vol 1078 ◽  
pp. 012005
Author(s):  
Roelof Bijker ◽  
Gustavo Guerrero-Navarro ◽  
Emmanuel Ortiz-Pacheco
Keyword(s):  
Quark Model ◽  
Weak Decays ◽  
Decays Of Baryons
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