scholarly journals Mass spectra and decay widths of hadrons in the relativistic string model

1999 ◽  
Vol 59 (9) ◽  
Author(s):  
M. Iwasaki ◽  
F. Takagi
Keyword(s):  
Mass Spectra ◽  
String Model ◽  
Relativistic String ◽  
Decay Widths

Relativistic string model of light mesons with massless quarks

1988 ◽  
Vol 41 (2) ◽  
pp. 293-302 ◽  
Author(s):  
V. I. Borodulin ◽  
M. S. Plyushchay ◽  
G. P. Pron'ko
Keyword(s):  
String Model ◽  
Relativistic String ◽  
Light Mesons

Mass spectra and leptonic decay widths of heavy quarkonia

1998 ◽  
Vol 4 (1) ◽  
pp. 107-114 ◽  
Author(s):  
L. Motyka ◽  
K. Zalewski
Keyword(s):  
Mass Spectra ◽  
Leptonic Decay ◽  
Heavy Quarkonia ◽  
Decay Widths

scholarly journals Mass spectra and decays of ground and orbitally excited cb̄ states in nonrelativistic quark model

2017 ◽  
Vol 32 (04) ◽  
pp. 1750021 ◽  
Author(s):  
Antony Prakash Monteiro ◽  
Manjunath Bhat ◽  
K. B. Vijaya Kumar
Keyword(s):  
Quark Model ◽  
Mass Spectra ◽  
Radiative Decay ◽  
Weak Decay ◽  
Exchange Potential ◽  
Complete Spectrum ◽  
Confinement Potential ◽  
Gluon Exchange ◽  
Nonrelativistic Quark Model ◽  
Decay Widths

The complete spectrum of [Formula: see text] states is obtained in a phenomenological nonrelativistic quark model (NRQM), which consists of a confinement potential and one gluon exchange potential (OGEP) as effective quark–antiquark potential. We make predictions for the radiative decay (E1 and M1) widths and weak decay widths of [Formula: see text] states in the framework of NRQM formalism.

Transitional description of mass spectra and radiative decay widths for q¯ mesons in the U(4) model

2006 ◽  
Vol 28 (3) ◽  
pp. 313-327 ◽  
Author(s):  
F. Pan ◽  
Y. Zhang ◽  
J. P. Draayer
Keyword(s):  
Mass Spectra ◽  
Radiative Decay ◽  
Decay Widths

scholarly journals Radiative Decay Widths of Ground and Excited States of Vector Charmonium and Bottomonium

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Hluf Negash ◽  
Shashank Bhatnagar
Keyword(s):  
Mass Spectrum ◽  
Excited States ◽  
Mass Spectra ◽  
Reasonable Agreement ◽  
Radiative Decay ◽  
Decay Constants ◽  
Two Photon ◽  
Quantum Numbers ◽  
Decay Widths ◽  
Input Parameters

We study the radiative decay widths of vector quarkonia for the process of J/ψ(nS)→ηc(nS)γ and Υ(nS)→ηb(nS)γ (for principal quantum numbers n=1,2,3) in the framework of Bethe-Salpeter equation under the covariant instantaneous ansatz using a 4×4 form of BSE. The parameters of the framework were determined by a fit to the mass spectrum of ground states of pseudoscalar and vector quarkonia, such as ηc, ηb, J/ψ, and Υ. These input parameters so fixed were found to give good agreements with data on mass spectra of ground and excited states of pseudoscalar and vector quarkonia, leptonic decay constants of pseudoscalar and vector quarkonia, two-photon decays, and two-gluon decays of pseudoscalar quarkonia in our recent paper. With these input parameters so fixed, the radiative decay widths of ground (1S) and excited (2S,3S) states of heavy vector quarkonia (J/Ψ and Υ) are calculated and found to be in reasonable agreement with data.

ORBITALLY EXCITED STATES OF QUARKONIA IN A NONRELATIVISTIC MODEL

2012 ◽  
Vol 27 (03n04) ◽  
pp. 1250011 ◽  
Author(s):  
BHAGHYESH ◽  
K. B. VIJAYA KUMAR ◽  
YONG-LIANG MA
Keyword(s):  
Wave Function ◽  
Excited States ◽  
Mass Spectra ◽  
Radiative Decay ◽  
Theoretical Models ◽  
Model Parameters ◽  
Linear Potential ◽  
S Wave ◽  
Oscillator Wave Function ◽  
Decay Widths

Having succeeded in predicting the S wave spectra and decays of [Formula: see text] and [Formula: see text] mesons, Bhaghyesh, K. B. Vijaya Kumar and A. P. Monteiro, J. Phys. G: Nucl. Part. Phys.38, 085001 (2011), in this article, we apply our nonrelativistic quark model to calculate the spectra and decays of the orbitally excited states (P- and D-waves) of heavy quarkonia. The full [Formula: see text] potential used in our model consists of a Hulthen potential and a confining linear potential. The spin hyperfine, spin-orbit and tensor interactions are introduced to obtain the masses of the P- and D-wave states. The three-dimensional harmonic oscillator wave function is employed as a trial wave function to obtain the mass spectra. The model parameters and the wave function that reproduce the mass spectra of [Formula: see text] and [Formula: see text] mesons are used to investigate their decay properties. The two-photon decay widths, two-gluon decay widths and E1 radiative decay widths are calculated. The obtained values are compared with the experimental results and those obtained from other theoretical models.

Generalization of the relativistic string model in the geometrical approach

1979 ◽  
Vol 3 (5) ◽  
pp. 359-365 ◽  
Author(s):  
B. M. Barbashov ◽  
V. V. Nesterenko ◽  
A. M. Chervjakov
Keyword(s):  
String Model ◽  
Relativistic String ◽  
Geometrical Approach

scholarly journals Relativistic string model in a space-time of a constant curvature

1981 ◽  
Vol 78 (4) ◽  
pp. 499-506 ◽  
Author(s):  
B. M. Barbashov ◽  
V. V. Nesterenko
Keyword(s):  
Constant Curvature ◽  
String Model ◽  
Space Time ◽  
Relativistic String

RADIATIVE DECAYS OF LIGHT MESONS IN THE STRAIGHT-LINE STRING THEORY

1994 ◽  
Vol 09 (17) ◽  
pp. 3059-3076
Author(s):  
E.B. BERDNIKOV
Keyword(s):  
String Theory ◽  
String Model ◽  
Decay Rates ◽  
Radiative Decays ◽  
Relativistic String ◽  
Radiative Transitions ◽  
Straight Line ◽  
Light Mesons ◽  
K Mesons

The radiative transitions of light mesons are considered in the relativistic string model. The predictions for the decay rates of the light I=1 mesons and K mesons are presented.

Meson mass spectra in the quark-string model

1978 ◽  
Vol 73 (2) ◽  
pp. 214-218 ◽  
Author(s):  
K. Kikkawa ◽  
Tsuneyuki Kotani ◽  
Masa-aki Sato
Keyword(s):  
Mass Spectra ◽  
String Model ◽  
Meson Mass
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