A quark model study of semileptonic baryon decays in the electronic decay modes

Pramana ◽  
1989 ◽  
Vol 32 (6) ◽  
pp. 753-760 ◽  
Author(s):  
D P Rath ◽  
S N Jena
Keyword(s):  
Quark Model ◽  
Decay Modes ◽  
Model Study ◽  
Semileptonic Baryon Decays

An independent quark model study of weak leptonic decays of pseudoscalar mesons

2015 ◽  
Vol 30 (16) ◽  
pp. 1550092
Author(s):  
S. N. Jena ◽  
P. K. Nanda ◽  
S. Sahoo ◽  
S. Panda
Keyword(s):  
Experimental Data ◽  
Quark Model ◽  
Decay Constant ◽  
Model Parameters ◽  
Decay Modes ◽  
Leptonic Decays ◽  
Model Study ◽  
Pseudoscalar Mesons ◽  
Model Predictions ◽  
Decay Widths

An independent quark model with a relativistic power-law potential is used to study the weak leptonic decays of light and heavy pseudoscalar mesons. The partial decay width and the decay constant for the weak leptonic decay are derived from the quark–antiquark momentum distribution amplitude which is obtained from the bound quark eigenfunction with the assumption of a strong correlation existing between quark–antiquark momenta inside the decaying meson in its rest frame. The model parameters are first determined from the application of the model to study the ground state hyperfine splitting of ρ, K, D, Ds, B, Bs and Bc mesons. The same model with no adjustable parameters is then used to evaluate the decay constants fM and the decay widths of pseudoscalar mesons. The model predictions agree quite well with the available experimental data as well as with those of several other models. The decay constant for pion and kaon are obtained as fπ = 132 MeV and fk = 161 MeV which closely agree with experimental values. But in case of heavier mesons for which experimental data are not yet available, the present model gives its predictions as fBC > fBS > fB, fDS > fD, fD > fB and fπ > fB which are in conformity with most of other model predictions. The model predictions of the corresponding decay widths and the branching ratios for the [Formula: see text] and [Formula: see text] decay modes are in close agreement with the available experimental data.

scholarly journals Quark model study of the πN→πN reactions up to the N(1440) resonance region

2017 ◽  
Vol 95 (5) ◽  
Author(s):  
Kai-Lei Wang ◽  
Li-Ye Xiao ◽  
Xian-Hui Zhong
Keyword(s):  
Quark Model ◽  
Resonance Region ◽  
Model Study

scholarly journals Charmed $$\Omega _c$$ weak decays into $$\Omega $$ in the light-front quark model

2020 ◽  
Vol 80 (11) ◽  
Author(s):  
Yu-Kuo Hsiao ◽  
Ling Yang ◽  
Chong-Chung Lih ◽  
Shang-Yuu Tsai
Keyword(s):  
Quark Model ◽  
Recent Observation ◽  
Branching Fractions ◽  
Form Factors ◽  
Weak Decay ◽  
Current Data ◽  
Light Front ◽  
Transition Form ◽  
Decay Modes ◽  
Weak Decays

AbstractMore than ten $$\Omega _c^0$$ Ω c 0 weak decay modes have been measured with the branching fractions relative to that of $$\Omega ^0_c\rightarrow \Omega ^-\pi ^+$$ Ω c 0 → Ω - π + . In order to extract the absolute branching fractions, the study of $$\Omega ^0_c\rightarrow \Omega ^-\pi ^+$$ Ω c 0 → Ω - π + is needed. In this work, we predict $${{\mathcal {B}}}_\pi \equiv {{\mathcal {B}}}(\Omega _c^0\rightarrow \Omega ^-\pi ^+)=(5.1\pm 0.7)\times 10^{-3}$$ B π ≡ B ( Ω c 0 → Ω - π + ) = ( 5.1 ± 0.7 ) × 10 - 3 with the $$\Omega _c^0\rightarrow \Omega ^-$$ Ω c 0 → Ω - transition form factors calculated in the light-front quark model. We also predict $${{\mathcal {B}}}_\rho \equiv {{\mathcal {B}}}(\Omega _c^0\rightarrow \Omega ^-\rho ^+)=(14.4\pm 0.4)\times 10^{-3}$$ B ρ ≡ B ( Ω c 0 → Ω - ρ + ) = ( 14.4 ± 0.4 ) × 10 - 3 and $${{\mathcal {B}}}_e\equiv {{\mathcal {B}}}(\Omega _c^0\rightarrow \Omega ^-e^+\nu _e)=(5.4\pm 0.2)\times 10^{-3}$$ B e ≡ B ( Ω c 0 → Ω - e + ν e ) = ( 5.4 ± 0.2 ) × 10 - 3 . The previous values for $${{\mathcal {B}}}_\rho /{{\mathcal {B}}}_\pi $$ B ρ / B π have been found to deviate from the most recent observation. Nonetheless, our $${{\mathcal {B}}}_\rho /{{\mathcal {B}}}_\pi =2.8\pm 0.4$$ B ρ / B π = 2.8 ± 0.4 is able to alleviate the deviation. Moreover, we obtain $${{\mathcal {B}}}_e/{{\mathcal {B}}}_\pi =1.1\pm 0.2$$ B e / B π = 1.1 ± 0.2 , which is consistent with the current data.

scholarly journals Quark model study of the semileptonic B → π decay

2007 ◽  
Author(s):  
C. Albertus ◽  
J. M. Flynn ◽  
E. Hernández ◽  
J. Nieves ◽  
J. M. Verde-Velasco
Keyword(s):  
Quark Model ◽  
Model Study

Some rare decay modes of theKmeson in a current-current quark model. I.K→πl+l−decay

1974 ◽  
Vol 10 (7) ◽  
pp. 2091-2094 ◽  
Author(s):  
R. Rockmore ◽  
A. N. Kamal
Keyword(s):  
Quark Model ◽  
Rare Decay ◽  
Decay Modes ◽  
Current Quark ◽  
A Current

scholarly journals Chiral SU(3) Quark Model Study of Tetraquark States: cnn̄s̄/css̄s̄

2008 ◽  
Vol 49 (2) ◽  
pp. 414-420 ◽  
Author(s):  
Zhang Hai-Xia ◽  
Wang Wen-Ling ◽  
Dai Yuan-Ben ◽  
Zhang Zong-Ye
Keyword(s):  
Quark Model ◽  
Model Study

scholarly journals Meson dynamics beyond the quark model: Study of final-state interactions

1987 ◽  
Vol 35 (5) ◽  
pp. 1633-1664 ◽  
Author(s):  
K. L. Au ◽  
D. Morgan ◽  
M. R. Pennington
Keyword(s):  
Quark Model ◽  
Final State ◽  
Model Study ◽  
Final State Interactions

scholarly journals d∗(2380) Resonance in a Chiral SU(3) Constituent Quark Model

2018 ◽  
Vol 46 ◽  
pp. 1860034
Author(s):  
Yubing Dong ◽  
Pengnian Shen ◽  
Fei Huang ◽  
Zongye Zhang
Keyword(s):  
Experimental Data ◽  
Quark Model ◽  
Charge Distribution ◽  
Constituent Quark ◽  
Constituent Quark Model ◽  
Total Width ◽  
Compact Structure ◽  
Decay Modes ◽  
Decay Widths

Recent studies on the newly observed resonance [Formula: see text] with a compact structure in a chiral SU(3) constituent quark model are briefly reported. the overall properties, including the mass, the partial decay widths in various decay modes, and the total width, comparing with the experimental data, show that a compact hexaquark dominated structure might be a reasonable interpretation for this state. Moreover, the charge distribution of [Formula: see text] is also discussed.

scholarly journals Chiral constituent quark model study of the process γp → ηp ⋆

2008 ◽  
Vol 35 (3) ◽  
pp. 321-324 ◽  
Author(s):  
J. He ◽  
B. Saghai ◽  
Z. Li ◽  
Q. Zhao ◽  
J. Durand
Keyword(s):  
Quark Model ◽  
Constituent Quark ◽  
Constituent Quark Model ◽  
Model Study

HEAVY FLAVOUR HADRONIC MOLECULES

2011 ◽  
Vol 26 (03n04) ◽  
pp. 613-615
Author(s):  
P. G. ORTEGA ◽  
D. R. ENTEM ◽  
F. FERNÁNDEZ
Keyword(s):  
Quark Model ◽  
Constituent Quark ◽  
Bound State ◽  
Constituent Quark Model ◽  
Charmonium State ◽  
Decay Modes

The structure and different decay modes of the X(3872) resonance are described in a constituent quark model as dynamically generated by the coupling of a molecular DD* state with a [Formula: see text] state. We also obtain in the D*D* JPC = 1-- channel a bound state that can be identify with the Y(4008) charmonium state. Other possible molecular states in the hidden bottom sector are discussed.

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