RARE DECAY B-]K-STAR-GAMMA IN STANDARD AND SUPERSYMMETRIC MODELS

Date

1990-03-22

Author

Alıyev, Tahmasıb
SLOBODENYUK, VA

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The formfactor of the rare decay is calculated with the help of the QCD sum rule method for the three-point correlators. Using this formfactor we found that when the sensitivity of the measurements is raised 3–4 times, one could either obtain an upper limit on mt, or detect the decay considered.

URI

https://hdl.handle.net/11511/37764

Journal

PHYSICS LETTERS B

DOI

https://doi.org/10.1016/0370-2693(90)91226-2

Collections

Department of Physics, Article

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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 -> a(1)l nu decay in QCD Alıyev, Tahmasıb; Savcı, Mustafa (1999-06-10) 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.
Acceptor 1s-2p(+/-) transitions in GaAs/Ga0.7Al0.3As quantum wells: Effects of spatially dependent screening under electric and magnetic fields Akbas, H; Aktas, S; Okan, SE; Ulas, M; Tomak, Mehmet (Wiley, 1998-02-01) The valence subband energies in the presence of an electric-field are calculated using the fourth-order Runge-Kutta method. The 1s- and 2p(+/-)-like acceptor states in the presence of a magnetic field are then calculated variationally. The effects of the spatially dependent screening function epsilon(r) on the calculation of the transition energies are specifically investigated. The use of a constant epsilon(o) is shown to yield better agreement with experimental results.
Scalar form factor of the nucleon and nucleon-scalar meson coupling constant in QCD Alıyev, Tahmasıb; Savcı, Mustafa (American Physical Society (APS), 2007-02-01) Scalar form factor of the nucleon is calculated in the framework of light-cone QCD sum rules, using the most general form of the baryon current. Using the result on scalar form factor of the nucleon, the nucleon-scalar sigma and a(0) meson coupling constants are estimated. Our results on these couplings are in good agreement with the prediction of the external-field QCD sum rules method.
Semileptonic decays of pseudoscalar mesons to the scalar f(0) meson Alıyev, Tahmasıb; Savcı, Mustafa (IOP Publishing, 2010-06-01) The transition form factors of D-s -> f(0)lv, D -> f(0) and B-u -> f(0)lv decays are calculated within the 3-point QCD sum rule method, assuming that f0 is a quark-antiquark state with a mixture of strange and light quarks. Having obtained the expressions of the transition form factors, the branching ratios of these decays are calculated. The experimental measurement of the branching ratios of these decays can provide a direct estimation of the mixing angle. Copyright (c) EPLA, 2010

Citation Formats

T. Alıyev and V. SLOBODENYUK, “RARE DECAY B-]K-STAR-GAMMA IN STANDARD AND SUPERSYMMETRIC MODELS,” PHYSICS LETTERS B, pp. 569–572, 1990, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/37764.