Browsing by Author "Ozpineci, A."

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Citation - WoS: 4
Citation - Scopus: 4
g_ΣQΣQπ coupling constant via light cone QCD sum rules
(Amer Physical Soc, 2010) Azizi, K.; Bayar, M.; Ozpineci, A.; Sarac, Y.
Using the most general form of the interpolating currents, the coupling constants g(Sigma b Sigma b pi) and g(Sigma c Sigma c pi) are calculated within the light cone QCD sum rules approach. It is found that g(Sigma c Sigma c pi) = -8.0 +/- 1.7 and g(Sigma b Sigma b pi) = -11.0 +/- 2.1.
Citation - WoS: 1
Citation - Scopus: 1
Reanalysis of rare radiative Ξ_b^- → Ξ^-γ decay in QCD
(Amer Physical Soc, 2024) Aliev, T. M.; Ozpineci, A.; Sarac, Y.
The upper limit of the branching ratio of the rare Xi(-)(b) ->Xi(-)gamma decay is obtained as BRo (Xi(-)(b) ->Xi(-)gamma) < 1.3 x 10(-4) by the LHCb. In the present work we study this decay within the light cone QCD sum rules employing the Xi b distribution amplitudes. At the first stage, the form factors entering the Xi(-)(b) ->Xi(-)gamma decay are obtained. Next, using the results for the form factors the corresponding branching ratio for this decay is estimated to be BR (Xi(-)(b) ->Xi(-)gamma) = (4.8 +/- 1.3)x 10(-5). This value lies below the upper limit established by the LHCb collaboration. Our finding for the branching ratio is also compared with the results of the other theoretical approaches existing in the literature.
Citation - WoS: 11
Citation - Scopus: 13
Semileptonic transition of Σ_b to Σ in light cone QCD sum rules
(Amer Physical Soc, 2012) Azizi, K.; Bayar, M.; Ozpineci, A.; Sarac, Y.; Sundu, H.
We use distribution amplitudes of the light Sigma baryon and the most general form of the interpolating current for heavy Sigma(b) baryon to investigate the semileptonic Sigma(b) -> Sigma l(+)l(-) transition in light cone QCD sum rules. We calculate all 12 form factors responsible for this transition and use them to evaluate the branching ratio of the considered channel. The order of branching fraction shows that this channel can be detected at LHC.
Citation - WoS: 7
Citation - Scopus: 7
Tree Level Semileptonic Σb To Nucleon Decay in Light Cone Qcd Sum Rules
(Amer Physical Soc, 2009) Azizi, K.; Bayar, M.; Ozpineci, A.; Sarac, Y.
Using the most general form of the interpolating current of the heavy spin 1/2, Sigma(b) baryon and distribution amplitudes of the nucleon, the transition form factors of the semileptonic Sigma(b) -> Nl nu decay are calculated in the framework of light-cone QCD sum rules. It is obtained that the form factors satisfy the heavy quark effective theory relations. The obtained results for the related form factors are used to estimate the decay rate of this transition.