scholarly journals Measurement of Semi-Leptonic Decay Width $\Gamma(D^0 \to K^- \mu^+ \nu_{\mu})$

1992 ◽  
Author(s):  
Shoji Mikado
Keyword(s):  
Decay Width ◽  
Leptonic Decay

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 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.

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 On leptonic width of X(4260)

2021 ◽  
Vol 81 (1) ◽  
Author(s):  
Qin-Fang Cao ◽  
Hong-Rong Qi ◽  
Guang-Yi Tang ◽  
Yun-Feng Xue ◽  
Han-Qing Zheng
Keyword(s):  
Quark Model ◽  
Decay Width ◽  
Cross Sections ◽  
Leptonic Decay ◽  
Numerical Analyses ◽  
Interference Effects ◽  
O 10

AbstractNew measurements on cross sections in $$e^+e^-\rightarrow J/\psi \pi ^+\pi ^-$$ e + e - → J / ψ π + π - , $$h_c\pi ^+\pi ^-$$ h c π + π - , $$D^0D^{*-}\pi ^++c.c.$$ D 0 D ∗ - π + + c . c . , $$\psi (2S)\pi ^+\pi ^-$$ ψ ( 2 S ) π + π - , $$\omega \chi _{c0}$$ ω χ c 0 and $$J/\psi \eta $$ J / ψ η channels have been carried out by BESIII, Belle and BABAR experiments, as well as in the $$D_s^{*+}D_s^{*-}$$ D s ∗ + D s ∗ - channel. We perform extensive numerical analyses by combining all these data available, together with those in $$D^+D^{*-}+c.c.$$ D + D ∗ - + c . c . and $$D^{*+}D^{*-}$$ D ∗ + D ∗ - channels. Though the latter show no evident peak around $$\sqrt{s}=4.230$$ s = 4.230 GeV, the missing X(4260) is explained as that it is concealed by the interference effects of the well established charmonia $$\psi (4040)$$ ψ ( 4040 ) , $$\psi (4160)$$ ψ ( 4160 ) and $$\psi (4415)$$ ψ ( 4415 ) . Our analyses reveal that the leptonic decay width of X(4260) ranges from $$\mathcal {O}(10^2)$$ O ( 10 2 ) eV to $$\mathcal {O}(1)$$ O ( 1 ) keV, and hence it is probably explained in the conventional quark model picture. That is, the X(4260) may well be interpreted as a mixture of $$4^3S_1$$ 4 3 S 1 and $$3^3D_1$$ 3 3 D 1 ($$2^3D_1$$ 2 3 D 1 ) states.

ELECTROWEAK ONE-LOOP CORRECTIONS TO THE LEPTONIC DECAY WIDTH OF W-BOSON, REVISITED

1991 ◽  
Vol 06 (30) ◽  
pp. 2767-2774 ◽  
Author(s):  
JIN WOO JUN ◽  
CHANGKEUN JUE
Keyword(s):  
Standard Model ◽  
Decay Width ◽  
W Boson ◽  
Renormalization Scheme ◽  
Leptonic Decay ◽  
Numerical Results ◽  
Mixing Effect ◽  
Quark Mixing ◽  
Analytical Results ◽  
The Standard Model

The eletroweak one-loop corrections to the decay width [Formula: see text] are calculated in the standard model. We have used the on-shell renormalization scheme of K Aoki et al. The full bremsstrahlung effect and the quark mixing effect are taken into account. Both the analytical results and the numerical results are presented.

scholarly journals Exotic vector charmonium and its leptonic decay width

2016 ◽  
Vol 40 (8) ◽  
pp. 081002 ◽  
Author(s):  
Ying Chen ◽  
Wei-Feng Chiu ◽  
Ming Gong ◽  
Long-Cheng Gui ◽  
Zhao-Feng Liu
Keyword(s):  
Decay Width ◽  
Leptonic Decay

Resonant parameters of Y(4390)

2017 ◽  
Vol 32 (33) ◽  
pp. 1750184 ◽  
Author(s):  
Jielei Zhang ◽  
Limin Yuan
Keyword(s):  
Lower Limit ◽  
Decay Width ◽  
Cross Sections ◽  
Leptonic Decay ◽  
Decay Modes ◽  
S Parameters ◽  
The Cross

The cross-sections of [Formula: see text] and [Formula: see text] have been measured by BESIII experiment. A new resonance [Formula: see text] is observed in the two decay modes. A combined fit is performed to the two cross-sections. [Formula: see text]’s parameters are determined to be [Formula: see text], [Formula: see text], where the first uncertainties are statistical and the second systematic. The ratio [Formula: see text] is also obtained and it indicates that [Formula: see text]’s main decay modes maybe [Formula: see text]. We determine the lower limit of its leptonic decay width of around 150 eV, which can be compared with the theoretical expectations of different models. These information may help in understanding the nature of this state.

Combined fit to the cross-sections of e+e−→ π+π−ψ(3686) and e+e−→ Λc+Λc−

2018 ◽  
Vol 33 (03) ◽  
pp. 1850020 ◽  
Author(s):  
Jielei Zhang ◽  
Limin Yuan
Keyword(s):  
Lower Limit ◽  
Decay Width ◽  
Decay Mode ◽  
Cross Sections ◽  
Leptonic Decay ◽  
Decay Modes ◽  
S Parameters ◽  
Belle Experiment ◽  
The Cross

The cross-sections of [Formula: see text] and [Formula: see text] have been measured by Belle experiment. A resonance [Formula: see text] is observed in [Formula: see text] decay mode, while another resonance [Formula: see text] is observed in [Formula: see text] decay mode. The two resonances [Formula: see text] and [Formula: see text]’s parameters are consistent with each other, so a combined fit is performed to the two cross-sections assuming [Formula: see text] and [Formula: see text] are same resonance. [Formula: see text]’s parameters are determined to be [Formula: see text], [Formula: see text], where the first uncertainties are statistical and the second systematic. The ratio [Formula: see text] is also obtained and it indicates that [Formula: see text]’s main decay modes may be [Formula: see text]. We determine the lower limit of its leptonic decay width of around 40 eV, which can be compared with the theoretical expectations of different models.

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