scholarly journals Dynamical relativistic corrections to the leptonic decay width of heavy quarkonia

2002 ◽  
Vol 24 (1) ◽  
pp. 101-108 ◽  
Author(s):  
F. Bissey ◽  
J.-J. Dugne ◽  
J.-F. Mathiot
Keyword(s):  
Decay Width ◽  
Leptonic Decay ◽  
Heavy Quarkonia ◽  
Relativistic Corrections

scholarly journals Measurement of the leptonic decay width of J/ψ using initial state radiation

2016 ◽  
Vol 761 ◽  
pp. 98-103 ◽  
Author(s):  
M. Ablikim ◽  
M.N. Achasov ◽  
X.C. Ai ◽  
O. Albayrak ◽  
M. Albrecht ◽  
...  
Keyword(s):  
Decay Width ◽  
Leptonic Decay ◽  
Initial State Radiation ◽  
Initial State ◽  
State Radiation

scholarly journals Hadronic annihilation decay rates ofP-wave heavy quarkonia with relativistic corrections

1997 ◽  
Vol 56 (9) ◽  
pp. 5816-5819 ◽  
Author(s):  
Han-Wen Huang ◽  
Hai-Ming Hu ◽  
Xiao-Fei Zhang
Keyword(s):  
Decay Rates ◽  
Heavy Quarkonia ◽  
Relativistic Corrections

scholarly journals Importance of confinement in instanton induced potential for bottomonium spectroscopy

2021 ◽  
Vol 81 (2) ◽  
Author(s):  
Bhoomika Pandya ◽  
Manan Shah ◽  
P. C. Vinodkumar
Keyword(s):  
Decay Width ◽  
Mixed State ◽  
Mass Spectra ◽  
Leptonic Decay ◽  
The State ◽  
Exchange Potential ◽  
Mixing Angle ◽  
Qcd Vacuum ◽  
Mass Degeneracy

AbstractMass spectra of bottomonium states are computed using the Instanton Induced potential obtained from Instanton Liquid Model for QCD vacuum and incorporating a stronger confinement term. Spin dependent interactions through confined one gluon exchange potential are incorporated to remove the mass degeneracy. The mass spectra of the $$b\bar{b}$$ b b ¯ states up to 4S states are found to be in good agreement with the values reported by PDG(2020). Mixing of nearby isoparity states are also studied. We found the state $$\varUpsilon (10{,}860)$$ Υ ( 10 , 860 ) as an admixture of $$5^3S_1$$ 5 3 S 1 and $$6^3D_1$$ 6 3 D 1 Upsilon states with mixing angle $$\theta = 39.98^{\circ }$$ θ = 39 . 98 ∘ and the mixed state di-leptonic decay width is found to be 0.25 keV as against the width of $$0.31 \pm 0.07$$ 0.31 ± 0.07  keV reported by PDG. Further the state $$\varUpsilon (11{,}020)$$ Υ ( 11 , 020 ) is also found to be the admixture of $$6^3S_1$$ 6 3 S 1 and $$5^3D_1$$ 5 3 D 1 Upsilon states with the mixing angle $$\theta = 51.69^{\circ }$$ θ = 51 . 69 ∘ and the di-leptonic decay width of the mixed state is obtained as 0.14 keV which is very close to the width of $$0.13 \pm 0.03$$ 0.13 ± 0.03  keV reported by PDG. Present results indicates that addition of confinement to the instanton potential is crucial for the determination of the mass spectroscopy of heavy hadrons.

scholarly journals Hyperfine Splitting and Leptonic Decay Rates in Heavy Quarkonia

2003 ◽  
Vol 18 (23) ◽  
pp. 1597-1600 ◽  
Author(s):  
D. Ebert ◽  
R. N. Faustov ◽  
V. O. Galkin
Keyword(s):  
Experimental Data ◽  
Hyperfine Splitting ◽  
Belle Collaboration ◽  
Leptonic Decay ◽  
Decay Rates ◽  
Heavy Quarkonia ◽  
Radiative Corrections

The hyperfine splitting in heavy quarkonia is considered in its relation to the leptonic decay rates with the account of relativistic and radiative corrections. The calculated decay rates agree well with the available experimental data, while the predicted ηc(2S) mass is significantly smaller than the value measured recently by the Belle collaboration.

Calculation of the leptonic decay width of ρ0 and ω0 mesons in a nucleon-antinucleon composite model

1968 ◽  
Vol 56 (3) ◽  
pp. 646-658
Author(s):  
Raoelina Andriambololona ◽  
C. Bourrely
Keyword(s):  
Decay Width ◽  
Composite Model ◽  
Leptonic Decay

scholarly journals Completing 1/$$ {m}_b^3 $$ corrections to non-leptonic bottom-to-up-quark decays

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Daniel Moreno
Keyword(s):  
Heavy Quark ◽  
Decay Width ◽  
Leptonic Decay ◽  
Spin Orbit ◽  
Leading Order ◽  
Order Accuracy ◽  
Flavor Changing ◽  
Quark Decays ◽  
Up Quark ◽  
Analytical Expressions

Abstract We compute the contributions of dimension six two-quark operators to the non-leptonic decay width of heavy hadrons due to the flavor changing bottom-to-up-quark transition in the heavy quark expansion. Analytical expressions for the Darwin term ρD and the spin-orbit term ρLS are obtained with leading order accuracy.

scholarly journals Annihilation rates of 3D2(2−−) and 3D3(3−−) heavy quarkonia

2017 ◽  
Vol 32 (06n07) ◽  
pp. 1750035 ◽  
Author(s):  
Tianhong Wang ◽  
Hui-Feng Fu ◽  
Yue Jiang ◽  
Qiang Li ◽  
Guo-Li Wang
Keyword(s):  
Excited States ◽  
Mass Spectra ◽  
Decay Rates ◽  
Wave Functions ◽  
Heavy Quarkonia ◽  
Relativistic Corrections ◽  
Quantum Numbers

We calculate the annihilation decay rates of the [Formula: see text] and [Formula: see text] charmonia and bottomonia by using the instantaneous Bethe–Salpeter (BS) method. The wave functions of states with quantum numbers [Formula: see text] and [Formula: see text] are constructed. By solving the corresponding instantaneous BS equations, we obtain the mass spectra and wave functions of the quarkonia. The annihilation amplitude is written within Mandelstam formalism and the relativistic corrections are taken into account properly. This is important, especially for high excited states, since their relativistic corrections are large. The results for the [Formula: see text] channel are as follows: [Formula: see text] keV, [Formula: see text] keV, [Formula: see text] keV and [Formula: see text] keV.

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