Semileptonic B -> a(1)l nu decay in QCD

The form factors and the branching ratio of the B --> a(1)lv decay are calculated in framework of QCD sum rules. A comparison of our results on form factors and branching ratio with the results from constituent quark model is presented. (C) 1999 Published by Elsevier Science B.V. All rights reserved.


Tensor form factors of B -> K-1 transition from QCD light cone sum rules
Alıyev, Tahmasıb; Savcı, Mustafa (Elsevier BV, 2011-05-30)
The tensor form factors of B into p-wave axial vector meson transition are calculated within light cone QCD sum rules method. The parametrizations of the tensor form factors based on the series expansion are presented.
Heavy chi(Q) (2) tensor mesons in QCD
Alıyev, Tahmasıb; Savcı, Mustafa (Elsevier BV, 2010-06-14)
The masses and decay constants of the ground state heavy chi(Q2) (Q = b, c) tensor mesons are calculated in the framework of the QCD sum rules approach. The obtained results on the masses are in good consistency with the experimental values. Our predictions on the decay constants can be verified in the future experiments.
Axial vector transition form factors of N -> Delta in QCD
Küçükarslan, Ayşe; Özdem, Ulaş; Özpineci, Altuğ (Elsevier BV, 2016-12)
The isovector axial vector form factors of N -> Delta transition are calculated by employing Light-cone QCD sum rules. The analytical results are analyzedby both the conventional method, and also by a Monte Carlo based approach which allows one to scan all of the parameter space. The predictions are also compared with the results in the literature, where available. Although the MonteCarlo analysis predicts large uncertainties in the predicted results, the predictions obtained by the conventional analysis ar...
Semileptonic B-s -> D-sJ(2460)l nu decay in QCD
Alıyev, Tahmasıb; Özpineci, Altuğ (Springer Science and Business Media LLC, 2007-08-01)
Using three point QCD sum rule methods, the form factors relevant to semileptonic B-s -> D-sJ(2460)l nu decay are calculated. The q(2) dependences of these form factors are evaluated and compared with the heavy quark effective theory predictions. The dependence of the asymmetry parameter alpha, characterizing the polarization of the D-sJ meson, on q(2) stop is studied. The branching ratio of this decay is also estimated, and it is shown that it can easily be detected at LHC.
Semileptonic B-c(-) -> D(*0)l nu transition in three-point QCD sum rules and heavy quark effective theory with gluon condensate corrections
Ghahramany, N.; Khosravi, R.; Azizi, K. (American Physical Society (APS), 2008-12-01)
Taking into account the gluon condensate contributions, the form factors of the semileptonic B-c(-) -> D(*0)l nu transition with l = tau, e are calculated in the framework of the three-point QCD sum rules. The heavy quark effective theory limit of the form factors is also computed. The relevant total decay width as well as the branching ratio are evaluated and compared with the predictions of the other nonperturbative approaches.
Citation Formats
T. Alıyev and M. Savcı, “Semileptonic B -> a(1)l nu decay in QCD,” PHYSICS LETTERS B, pp. 256–263, 1999, Accessed: 00, 2020. [Online]. Available: