scholarly journals Meson Spectrum from the Bethe-Salpeter Equation

1997 ◽  
Vol 50 (1) ◽  
pp. 95 ◽  
Author(s):  
C. J. Burden ◽  
L. Qian ◽  
C. D. Roberts ◽  
P. C. Tandy ◽  
M. J. Thomson
Keyword(s):  
Mass Spectrum ◽  
Pseudoscalar Meson ◽  
Phenomenological Model ◽  
Light Quark ◽  
Meson Spectrum ◽  
Decay Constants ◽  
Model Based ◽  
Meson Octet

We present details of a model for calculating the mass spectrum of light-quark mesons and decay constants of the pseudoscalar meson octet from a phenomenological model based on Dyson–Schwinger and Bethe–Salpeter equations. In this model the Bethe-Salpeter kernel is approximated by a separable ansatz obtained from input quark propagators.

scholarly journals Meson Mass Spectrum from First Order Static Cavity Wavefunctions

1989 ◽  
Vol 42 (5) ◽  
pp. 471
Author(s):  
Lloyd CL Hollenberg ◽  
Bruce HJ McKellar
Keyword(s):  
Mass Spectrum ◽  
Heavy Quark ◽  
Ground State ◽  
Light Quark ◽  
Meson Mass ◽  
Meson Spectrum ◽  
First Order ◽  
Quark Masses ◽  
Quark Sector ◽  
Meson Mass Spectrum

Large-basis O(g) static cavity wavefunctions, containing bremsstrahlung and quark-sea states, previously fitted to the light quark meson sector, are applied to the ground-state meson spectrum in general. The only parameters of the model in the heavy quark sector are the quark masses me and mb which we fit to D and B states. Predictions for the meson mass spectrum are given and are found to be a significant improvement over the predictions of the original. MIT model.

scholarly journals The Charm and Beauty of Strong Interactions

2018 ◽  
Vol 172 ◽  
pp. 02005 ◽  
Author(s):  
Bruno El-Bennich
Keyword(s):  
Mass Spectrum ◽  
Strong Interaction ◽  
Bound States ◽  
Flavor Physics ◽  
Weak Decay ◽  
Strong Interactions ◽  
Interaction Models ◽  
Common Features ◽  
Decay Constants

We briefly review common features and overlapping issues in hadron and flavor physics focussing on continuum QCD approaches to heavy bound states, their mass spectrum and weak decay constants in different strong interaction models.

Hydrogen storage on LaNi5−xSnx. Experimental and phenomenological Model-based analysis

2018 ◽  
Vol 173 ◽  
pp. 113-122 ◽  
Author(s):  
D.G. Oliva ◽  
M. Fuentes ◽  
E.M. Borzone ◽  
G.O. Meyer ◽  
P.A. Aguirre
Keyword(s):  
Hydrogen Storage ◽  
Phenomenological Model ◽  
Model Based ◽  
Model Based Analysis

Mass spectrum and leptonic decay constants of ground and radially excited states of ηc and ηb in a Bethe–Salpeter equation framework

2015 ◽  
Vol 24 (04) ◽  
pp. 1550030 ◽  
Author(s):  
Hluf Negash ◽  
Shashank Bhatnagar
Keyword(s):  
Mass Spectrum ◽  
Excited States ◽  
Ground State ◽  
Reasonable Agreement ◽  
Equal Mass ◽  
Leptonic Decay ◽  
Decay Constants ◽  
Pseudoscalar Mesons

In this paper, we study the mass spectrum and decay constants of ground state (1S) and radially excited states (2S and 3S) of heavy equal mass pseudoscalar mesons, ηc and ηb. We have employed the framework of Bethe–Salpeter equation (BSE) under Covariant Instantaneous Ansatz (CIA). Our predictions are in reasonable agreement with the data on available states and results of other models.

scholarly journals An approach to the instanton effect in B system

2018 ◽  
Vol 33 (02) ◽  
pp. 1850017
Author(s):  
Noriaki Kitazawa ◽  
Yuki Sakai
Keyword(s):  
Mass Spectrum ◽  
Chiral Symmetry Breaking ◽  
Light Quark ◽  
Heavy Meson ◽  
Effective Theory ◽  
Meson Mass ◽  
Quark Masses ◽  
Quark Interaction ◽  
Up Quark ◽  
Instanton Effect

We discuss the constraint on the size of QCD instanton effects in low-energy effective theory. Among various instanton effects in meson mass spectrum and dynamics, we concentrate on the instanton-induced masses of light quarks. The famous instanton-induced six-quark interaction, so-called ’t Hooft vertex, could give nonperturbative quantum corrections to light quark masses. Many works have already been achieved to constrain the mass corrections in light meson system, or the system of [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text], and now we know for a fact that the instanton-induced mass of up-quark is too small to realize the solution of the strong CP problem by vanishing current mass of up-quark. In this work, we give a constraint on the instanton-induced mass correction to light quarks from the mass spectrum of heavy mesons, [Formula: see text], [Formula: see text], [Formula: see text] and their antiparticles. To accomplish this, the complete second-order chiral symmetry breaking terms are identified in heavy meson effective theory. We find that the strength of the constraint from heavy meson masses is at the same level of that from light mesons, and it would be made even stronger by more precise data from future [Formula: see text] factories and lattice calculations.

scholarly journals DECAY CONSTANTS OF HEAVY–LIGHT MESONS IN THE RELATIVISTIC QUARK MODEL

2002 ◽  
Vol 17 (13) ◽  
pp. 803-807 ◽  
Author(s):  
D. EBERT ◽  
R. N. FAUSTOV ◽  
V. O. GALKIN
Keyword(s):  
Quark Model ◽  
Light Quark ◽  
Relativistic Effects ◽  
Relativistic Quark Model ◽  
Sum Rule ◽  
Decay Constants ◽  
Model Predictions ◽  
Relativistic Treatment ◽  
Light Mesons ◽  
Good Agreement

The decay constants of pseudoscalar and vector heavy–light mesons are calculated in the framework of the relativistic quark model with the completely relativistic treatment of the light quark. It is argued that relativistic effects play a significant role. Good agreement of the model predictions with recent lattice and QCD sum rule calculations as well as available experimental data are found.

scholarly journals Constraints on light quark masses from the heavy meson spectrum

1995 ◽  
Vol 52 (9) ◽  
pp. 5202-5205 ◽  
Author(s):  
Markus A. Luty ◽  
Raman Sundrum
Keyword(s):  
Light Quark ◽  
Heavy Meson ◽  
Meson Spectrum ◽  
Quark Masses
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