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The gK(0)(*)K pi coupling constant in QCD
Date
2001-01-01
Author
Alıyev, Tahmasıb
Savcı, Mustafa
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The strong coupling constant g kappa (0)*kappa pi of the scalar K-0* meson decay to K pi is calculated in light cone QCD sum rule. The predicted value of the coupling constant g kappa (0)*kappa pi is in a good agreement with the experimental result.
Subject Keywords
CP violation
,
Quantum chromodynamics
,
Quark mass
,
Decay
URI
https://hdl.handle.net/11511/55032
Journal
ACTA PHYSICA POLONICA B
Collections
Department of Physics, Article
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Using the general form of the Sigma (0) and Lambda currents, the Sigma (0)Lambda transition magnetic moment is calculated in framework of the light cone QCD sum rules. A comparison of our result on this quantity with the existing theoretical results and experimental data is presented.
Strong coupling constants of the octet baryons to Kand pi mesons in light cone QCD sum rules
Alıyev, Tahmasıb; Özpineci, Altuğ (2007-06-20)
In this work, the strong coupling constants of the octet baryons to the K and pi mesons are studied within the Light Cone QCD sum rule method. It is well known that in the SU(3)(f) limit, these couplings can be expressed in terms of only 2 constants, so called F and D constants. In this work, the SU(3)(f) symmetry violating effects are also studied and it is shown that all the coupling constants can be expressed in terms of four analytical functions of the quark parameters.
Strong coupling constant of a negative parity nucleon with a pi meson in light-cone QCD sum rules
Alıyev, Tahmasıb; Savcı, Mustafa (2017-03-28)
We estimate the strong coupling constant between the negative parity nucleons with pi meson within the lightcone QCD sum rules. A method for eliminating the unwanted contributions coming from the nucleon-nucleon and nucleon-negative parity nucleon transition is presented. It is observed that the value of the strong coupling constant of the negative parity nucleon N* N* pi transition is smaller by about 50% compared to the coupling constant of the positive parity NN pi transition.
The strong coupling constants of excited positive parity heavy mesons in light-cone QCD
Alıyev, Tahmasıb; Savcı, Mustafa (1997-01-02)
We calculate the strong coupling constants g(p**p*pi), where P** (D**, B**) is the 1(+) p-wave state, in the framework of the light-cone QCD sum rules, and using these values of g(p**p*pi), we compute the hadronic decay widths for D** --> D*pi and B** --> B*pi.
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T. Alıyev and M. Savcı, “The gK(0)(*)K pi coupling constant in QCD,”
ACTA PHYSICA POLONICA B
, pp. 65–74, 2001, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/55032.