The semileptonic B to K-1(1270,1400) decays in QCD sum rules

Download

index.pdf

Date

2011-01-01

Author

Dag, H.
Özpineci, Altuğ
Zeyrek, Mehmet Tevfik

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

166
views

54
downloads

We analyze the semileptonic rare decays of the B meson to K-1(1270) and K-1(1400) axial vector mesons. The B -> K-1(1270, 1400)l(+)l(-) decays are significant flavor-changing neutral current decays of the B meson. These decays are sensitive to the new physics beyond the standard model (SM), since these processes are forbidden at tree level at SM. These decays occurring at the quark level via b -> sl(+)l(-) transition also provide new opportunities for calculating the CKM matrix elements V-bt and V-ts. In this study, the transition form factors of the B -> K-1(1270, 1400)l(+)l(-) decays are calculated using the three-point QCD sum rules approach. The resulting form factors are used to estimate the branching fractions of these decays.

Subject Keywords

Nuclear and High Energy Physics

URI

https://hdl.handle.net/11511/46634

Journal

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS

DOI

https://doi.org/10.1088/0954-3899/38/1/015002

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

The gV sigma gamma coupling constants in hadron electrodynamics Rekalo, MP; Tomasi-Gustafsson, E (Elsevier BV, 2003-09-22) Recent measurements of the branching ratios for the decays omega --> pi(0) pi(0)gamma and rho(0) --> pi(0)pi(0)gamma lead to coupling constants of the Vsigmagamma interaction (V is a vector meson) one order of magnitude smaller than previously assumed to describe the threshold cross section of gamma + p --> p + rho(0) and the HERMES effect. The new g(Vsigmagamma)(2) a couplings are in contradiction with the predictions of the QCD sum rules, but are in agreement with vector meson dominance estimation of the ...
The omega sigma gamma-vertex in light cone QCD sum rules Gokalp, A; Yılmaz, Osman (IOP Publishing, 2002-06-01) We investigate the omegasigmagamma-vertex and estimate the coupling constant g(omegasigmagamma) in the framework of the light cone QCD sum rules. We compare our result with the values of this coupling constant deduced from a phenomenological analysis of omega --> pipigamma decays.
The mass and residues of radially and orbitally excited doubly heavy baryons in QCD Alıyev, Tahmasıb; Bilmiş, Selçuk (Elsevier BV, 2019-04-01) The mass and residues of the first radial and orbital excitations of J = 1/2 baryons containing two heavy quarks (b or c) are calculated within the QCD sum rules method. In calculations, the general forms of the interpolating currents with symmetric and anti-symmetric forms with respect to the exchange of heavy quarks have been used. Our results on the spectroscopic parameters of doubly heavy baryons are compared with the predictions of other theoretical approaches.
Strong coupling constant of negative parity octet baryons with light pseudoscalar mesons in light cone QCD sum rules Alıyev, Tahmasıb; Savcı, Mustafa (Elsevier BV, 2017-01-01) The strong coupling constants of the pi and K mesons with negative parity octet baryons are estimated within the light cone QCD sum rules. It is observed that all strong coupling constants, similarly to the case for the positive parity baryons, can be described in terms of three invariant functions, where two of them correspond to the well known F and D couplings in the SU (3)(f) symmetry, and the third function describes the SU(3)(f) symmetry violating effects. We compare our predictions on the strong coup...
Strong coupling constants of decuplet baryons with vector mesons Alıyev, Tahmasıb; Savcı, Mustafa (American Physical Society (APS), 2010-11-10) We provide a comprehensive study of strong coupling constants of decuplet baryons with light nonet vector mesons in the framework of light cone QCD sum rules. Using the symmetry arguments, we argue that all coupling constants entering the calculations can be expressed in terms of only one invariant function even if the SU(3)(f) symmetry breaking effects are taken into account. We estimate the order of SU(3)(f) symmetry violations, which are automatically considered by the employed approach.

Citation Formats

H. Dag, A. Özpineci, and M. T. Zeyrek, “The semileptonic B to K-1(1270,1400) decays in QCD sum rules,” JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, pp. 0–0, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/46634.