scholarly journals Semileptonic Transition of Tensorχc2(1P)toDsMeson

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
J. Y. Sungu ◽  
H. Sundu ◽  
K. Azizi
Keyword(s):  
Decay Width ◽  
Sum Rules ◽  
Decay Channel ◽  
Form Factors ◽  
Gluon Condensate ◽  
Direct Search ◽  
Meson Decay ◽  
Transition Form ◽  
Qcd Sum Rules ◽  
Decay Channels

Taking into account the two-gluon condensate corrections, the transition form factors of the semileptonicχc2→Dsl-ν(l=e,μ)decay channel are calculated via three-point QCD sum rules. These form factors are used to estimate the decay width of the transition under consideration in both electron and muon channels. The obtained results can be used both in direct search for such decay channels at charm factories and in analysis of theBcmeson decay at LHC.

scholarly journals Investigation of the Rare ExclusiveBc*→Dsνν-Decays in the Framework of the QCD Sum Rules

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
V. Bashiry
Keyword(s):  
Correlation Function ◽  
Decay Width ◽  
Sum Rules ◽  
Branching Ratio ◽  
Form Factors ◽  
Gluon Condensate ◽  
Qcd Sum Rules

ExclusiveBc*→Dsνν-decay is studied in the framework of the three-point QCD sum rules approach. The two gluon condensate contributions to the correlation function are calculated and the form factors of this transition are found. The decay width and total branching ratio for this decay are also calculated.

scholarly journals ANALYSIS OF THE $B_q\to D_q(D_q^*)P$ AND $B_q\to D_q(D_q^*)V$ DECAYS WITHIN THE FACTORIZATION APPROACH IN QCD

2009 ◽  
Vol 24 (31) ◽  
pp. 5845-5860 ◽  
Author(s):  
K. AZIZI ◽  
R. KHOSRAVI ◽  
F. FALAHATI
Keyword(s):  
Experimental Data ◽  
Perturbative Qcd ◽  
Sum Rules ◽  
Branching Fraction ◽  
Form Factors ◽  
Transition Form ◽  
Qcd Sum Rules ◽  
Factorization Approach ◽  
Electroweak Penguin ◽  
Decay Widths

Using the factorization approach and considering the contributions of the current–current, QCD penguin and electroweak penguin operators at the leading approximation, the decay amplitudes and decay widths of [Formula: see text] and [Formula: see text] transitions, where q = u, d, s and P and V are pseudoscalar and vector mesons, are calculated in terms of the transition form factors of the Bq→Dq and [Formula: see text]. Having computed those form factors in three-point QCD sum rules, the branching fraction for these decays are also evaluated. A comparison of our results with the predictions of the perturbative QCD as well as the existing experimental data is presented.

scholarly journals Light cone QCD sum rules analysis of the axial transition form factors

2008 ◽  
Vol 799 (1-4) ◽  
pp. 105-126 ◽  
Author(s):  
T.M. Aliev ◽  
K. Azizi ◽  
A. Ozpineci
Keyword(s):  
Light Cone ◽  
Sum Rules ◽  
Form Factors ◽  
Transition Form ◽  
Qcd Sum Rules

scholarly journals Semileptonic decay of $$\varOmega _c^0 \rightarrow \varXi ^- l^+ \nu _l$$ from light-cone sum rules

2021 ◽  
Vol 81 (2) ◽  
Author(s):  
Hui-Hui Duan ◽  
Yong-Lu Liu ◽  
Ming-Qiu Huang
Keyword(s):  
Decay Width ◽  
Light Cone ◽  
Sum Rules ◽  
Semileptonic Decay ◽  
Decay Channel ◽  
Branching Ratio ◽  
Form Factors ◽  
Weak Decay ◽  
Decay Process ◽  
Sum Rule

AbstractThe weak decay process of $$\varOmega _c$$ Ω c to $$\varXi $$ Ξ is calculated in the method of QCD light-cone sum rule. The decay width of $$\varOmega _c^0 \rightarrow \varXi ^- l^+ \nu _l$$ Ω c 0 → Ξ - l + ν l and its decay branching ratio are also calculated with the form factors from this work’s calculation. To the twist-6 distribution amplitudes, the form factors $$f_1=0.66\pm 0.02, f_2=-0.76\pm 0.03, g_1=0.06\pm 0.01$$ f 1 = 0.66 ± 0.02 , f 2 = - 0.76 ± 0.03 , g 1 = 0.06 ± 0.01 and $$g_2=-0.44\pm 0.01$$ g 2 = - 0.44 ± 0.01 are given at zero recoil point. The result of the semileptonic decay width of $$\varOmega _c^0 \rightarrow \varXi ^-l^+\nu _l$$ Ω c 0 → Ξ - l + ν l is $$\varGamma =(7.51\pm 0.36)\times 10^{-15}~\mathrm{{GeV}}$$ Γ = ( 7.51 ± 0.36 ) × 10 - 15 GeV , and the prediction of the decay branching ratio $$Br(\varOmega _c^0\rightarrow \varXi ^-l^+\nu _l)=(3.06\pm 0.15)\times 10^{-3}$$ B r ( Ω c 0 → Ξ - l + ν l ) = ( 3.06 ± 0.15 ) × 10 - 3 . These results fit well with other works, and the decay width and branching ratio are improved. This not too small branching ratio gives a good direction to explore this decay channel in the future experiments.

scholarly journals The transition form factors for semi-leptonic weak decays of J/ψ in QCD sum rules

2008 ◽  
Vol 54 (1) ◽  
pp. 107-121 ◽  
Author(s):  
Yu-Ming Wang ◽  
Hao Zou ◽  
Zheng-Tao Wei ◽  
Xue-Qian Li ◽  
Cai-Dian Lü
Keyword(s):  
Sum Rules ◽  
Form Factors ◽  
Transition Form ◽  
Qcd Sum Rules ◽  
Weak Decays

scholarly journals D → a1, f1 transition form factors and semileptonic decays via 3-point QCD sum rules

2016 ◽  
Vol 31 (20n21) ◽  
pp. 1650116 ◽  
Author(s):  
Yabing Zuo ◽  
Yue Hu ◽  
Linlin He ◽  
Wei Yang ◽  
Yan Chen ◽  
...  
Keyword(s):  
Sum Rules ◽  
Axial Vector ◽  
Form Factors ◽  
Semileptonic Decays ◽  
Branching Ratios ◽  
Transition Form ◽  
Vector Mesons ◽  
Qcd Sum Rules ◽  
The Future ◽  
Spin Triplet

By using the 3-point QCD sum rules, we calculate the transition form factors of [Formula: see text] decays into the spin triplet axial vector mesons [Formula: see text], [Formula: see text], [Formula: see text]. In the calculations, we consider the quark contents of each meson in detail. In view of the fact that the isospin of [Formula: see text] is one, we calculate the [Formula: see text] and [Formula: see text] transition form factors separately. In the case of [Formula: see text], [Formula: see text], the mixing between light flavor [Formula: see text] singlet and octet is taken into account. Based on the form factors obtained here, we give predictions for the branching ratios of relevant semileptonic decays, which can be tested in the future experiments.

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