Heavy-quarkonium spectroscopy and leptonic decay widths

1996 ◽  
Vol 109 (5) ◽  
pp. 569-574
Author(s):  
C. Itoh ◽  
T. Minamikawa ◽  
K. Miura ◽  
T. Watanabe
Keyword(s):  
Leptonic Decay ◽  
Heavy Quarkonium ◽  
Decay Widths

scholarly journals HEAVY QUARKONIUM IN THE DUAL GINZBURG–LANDAU THEORY OF QCD

1996 ◽  
Vol 11 (15) ◽  
pp. 2677-2688 ◽  
Author(s):  
KATSUHIKO SUZUKI ◽  
HIROSHI TOKI
Keyword(s):  
Gluon Propagator ◽  
Landau Theory ◽  
Light Quark ◽  
Pair Creation ◽  
Leptonic Decay ◽  
Heavy Quarkonium ◽  
Ginzburg Landau ◽  
Color Confinement ◽  
Decay Widths ◽  
The Masses

We study the masses and leptonic decay widths of the heavy quarkonium in the dual Ginzburg–Landau (DGL) theory of QCD, in which the Abelian monopole condensation plays an essential role for color confinement. The effect of color screening due to the light quark pair creation is introduced by the infrared momentum cutoff in the gluon propagator. We find that the color screening effect is important for reproducing the properties of the heavy quarkonium, in particular the leptonic decay width. We also discuss the underlying systematics of the heavy quark spectroscopy in the DGL theory.

scholarly journals S-Wave Heavy Quarkonium Spectra: Mass, Decays, and Transitions

2018 ◽  
Vol 2018 ◽  
pp. 1-12
Author(s):  
Halil Mutuk
Keyword(s):  
Logarithmic Potential ◽  
Heavy Quarkonium ◽  
Theoretical Studies ◽  
S Wave ◽  
Potential Models ◽  
Decay Constants ◽  
Two Photon ◽  
Regge Trajectories ◽  
Decay Widths ◽  
Hyperfine Splittings

In this paper we revisited phenomenological potentials. We studied S-wave heavy quarkonium spectra by two potential models. The first one is power potential and the second one is logarithmic potential. We calculated spin averaged masses, hyperfine splittings, Regge trajectories of pseudoscalar and vector mesons, decay constants, leptonic decay widths, two-photon and two-gluon decay widths, and some allowed M1 transitions. We studied ground and 4 radially excited S-wave charmonium and bottomonium states via solving nonrelativistic Schrödinger equation. Although the potentials which were studied in this paper are not directly QCD motivated potential, obtained results agree well with experimental data and other theoretical studies.

On decay widths of heavy quarkonium states

1993 ◽  
Vol 308 (1-2) ◽  
pp. 100-104 ◽  
Author(s):  
P. Volkovitsky
Keyword(s):  
Heavy Quarkonium ◽  
Decay Widths

scholarly journals LEPTONIC DECAY OF HEAVY–LIGHT MESONS IN A QCD POTENTIAL MODEL

2013 ◽  
Vol 28 (02) ◽  
pp. 1350010 ◽  
Author(s):  
KRISHNA KINGKAR PATHAK ◽  
D. K. CHOUDHURY ◽  
N. S. BORDOLOI
Keyword(s):  
Wave Function ◽  
B Mesons ◽  
Potential Model ◽  
Branching Ratio ◽  
Leptonic Decay ◽  
Decay Constants ◽  
Decay Widths ◽  
Mesonic Wave Function ◽  
Experimental Values ◽  
The Masses

We study the masses and decay constants of heavy–light flavor mesons D, Ds, B and Bs in a QCD potential model. The mesonic wave function is used to compute the masses of D and B mesons in the ground state and the wave function is transformed to momentum space to estimate the pseudoscalar decay constants of these mesons. The leptonic decay widths and branching ratio of these mesons for different leptonic channels are also computed to compare with the experimental values. The results are found to be compatible with available data.

scholarly journals ANALYSIS OF THE RADIATIVE DECAYS AMONG THE BOTTOMONIUM STATES

2012 ◽  
Vol 27 (34) ◽  
pp. 1250197 ◽  
Author(s):  
ZHI-GANG WANG
Keyword(s):  
Experimental Data ◽  
Systematic Study ◽  
Radiative Decay ◽  
Radiative Decays ◽  
Heavy Quarkonium ◽  
Radiative Transitions ◽  
Decay Widths ◽  
The Future

In this paper, we perform an systematic study of the radiative transitions among the bottomonium states using the heavy quarkonium effective Lagrangians, and make predictions for the ratios among the radiative decay widths of a special multiplet to another multiplet. The predictions can be confronted with the experimental data in the future.

scholarly journals A SYSTEMATIC STUDY ON NONRELATIVISTIC QUARKONIUM INTERACTION

2006 ◽  
Vol 21 (19n20) ◽  
pp. 3989-4002 ◽  
Author(s):  
SAMEER M. IKHDAIR ◽  
RAMAZAN SEVER
Keyword(s):  
Systematic Study ◽  
Mass Spectra ◽  
Potential Model ◽  
Expansion Method ◽  
Leptonic Decay ◽  
Large N ◽  
Decay Widths ◽  
Hyperfine Splittings ◽  
The Masses ◽  
Static Quark

A recently proposed strictly phenomenological static quark–antiquark potential belonging to the generality V(r) = -Ar-α + κrβ + V0 is tested with heavy quarkonia in the context of the shifted large N-expansion method. This nonrelativistic potential model fits the spin-averaged mass spectra of the [Formula: see text], [Formula: see text] and [Formula: see text] quarkonia within a few MeV and also the five experimentally known leptonic decay widths of the [Formula: see text] and [Formula: see text] vector states. Further, we compute the hyperfine splittings of the bottomonium spectrum as well as the fine and hyperfine splittings of the charmonium spectrum. We give predictions for not yet observed Bc splittings. The model is then used to predict the masses of the remaining quarkonia and the leptonic decay widths of the two pseudoscalar [Formula: see text] states. Our results are compared with other models to gauge the reliability of the predictions and point out differences.

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