scholarly journals Mass spectrum and decay constants of radially excited vector mesons

2017 ◽  
Vol 96 (1) ◽  
Author(s):  
Fredy F. Mojica ◽  
Carlos E. Vera ◽  
Eduardo Rojas ◽  
Bruno El-Bennich
Keyword(s):  
Mass Spectrum ◽  
Vector Mesons ◽  
Decay Constants

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.

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.

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 Decay constants of the charmed vector mesons D⁎ and Ds⁎ from QCD sum rules

2014 ◽  
Vol 735 ◽  
pp. 12-18 ◽  
Author(s):  
Wolfgang Lucha ◽  
Dmitri Melikhov ◽  
Silvano Simula
Keyword(s):  
Sum Rules ◽  
Vector Mesons ◽  
Qcd Sum Rules ◽  
Decay Constants

B′ MIXING AND THE PSEUDOSCALAR DECAY CONSTANT

1990 ◽  
Vol 05 (17) ◽  
pp. 3335-3346
Author(s):  
WEI-SHU HOU
Keyword(s):  
Decay Constant ◽  
B Meson ◽  
Meson Decay ◽  
Vector Mesons ◽  
Decay Constants ◽  
Light System ◽  
Meson Mixing ◽  
Pseudoscalar Decay Constant ◽  
Present Understanding ◽  
B Mixing

The possibilities of B′ meson mixing is discussed. It is found that if fB′ is not much smaller than fπ, B's (or B'd) mixing is possible if |Vt′s Vt′b′/Vcb′| is large, but only for not too heavy b′ masses, e.g. below LEP I energies. The B'b meson will have large mixing for a broad range of parameters; however, it is hard to produce. The vector mesons (B′*) may exhibit mixing phenomena as well. A discussion of our present understanding of meson decay constants of a heavy-light system [Formula: see text] is given. Further efforts on this problem is needed, which will have an impact on our understanding of B mixing as well.

Decay Constants of Vector Mesons

2008 ◽  
Vol 25 (4) ◽  
pp. 1239-1242 ◽  
Author(s):  
Li Heng-Mei ◽  
Wan Shao-Long
Keyword(s):  
Vector Mesons ◽  
Decay Constants

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.

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