Scalar a(0)(980) meson in phi ->pi(0)eta gamma decay

Gokalp, A
Kucukarslan, A
Solmaz, S
Yılmaz, Osman
We study the radiative decay phi --> pi(0)etagamma within the framework of a phenomenological approach in which the contributions of the rho meson, chiral loop and a(0) meson are considered. We analyse the interference effects between different contributions and utilizing the experimental branching ratio and invariant pi(0)eta mass spectrum for the phi --> pi(0)etagamma decay, we estimate the branching ratio of the phi --> a(0)gamma decay.


Radiative decays of decuplet to octet baryons in light cone QCD
Alıyev, Tahmasıb; Özpineci, Altuğ (Elsevier BV, 2006-01-02)
The radiative decays of decuplet to octet baryons are analyzed within the light cone QCD sum rules framework. The electromagnetic transition form factors for these decays are calculated at q(2) = 0 up to twist-4 accuracy for photon wave functions and including first order strange quark mass corrections. A comparison of our results with predictions of lattice theory and existing experimental data is presented. (c) 2005 Published by Elsevier B.V.
Scalar mesons in radiative phi ->(KK-0)-K-0 gamma decay
Gokalp, A.; Korkmaz, C. S.; Yılmaz, Osman (American Physical Society (APS), 2007-01-01)
We study the radiative phi -> K-0(K) over bar (0)gamma decay within a phenomenological framework by considering the contributions of the f(0)(980) and a(0)(980) scalar resonances. We calculate the branching ratio B(phi -> K-0(K) over bar (0)gamma) by employing the coupling constants g(f0)K(+)K(-) and g(a0)K(+)K(-) as determined by different experimental groups.
Nucleon form factors induced by isovector and isoscalar axial-vector currents in QCD
Alıyev, Tahmasıb (Elsevier BV, 2007-11-15)
Using the most general form of the baryon current, nucleon form factors, induced by isovector and isoscalar axial-vector currents, are studied in the framework of light cone QCD sum rule approach. Comparison of our results on form factors with the existing results and lattice calculations are presented.
Investigations of spinodal dynamics in asymmetric nuclear matter within a stochastic relativistic model
Yılmaz, Osman; ACAR, FERİDE PINAR; Saatci, S.; GÖKALP, AHMET (Springer Science and Business Media LLC, 2013-03-01)
Early development of spinodal instabilities and density correlation functions in asymmetric nuclear matter are investigated in the stochastic extension of the Walecka-type relativistic mean field including coupling with rho meson. Calculations are performed under typical conditions encountered in heavy-ion collisions and in the crusts of neutron stars. In general, growth of instabilities occur relatively slower for increasing charge asymmetry of matter. At higher densities around rho = 0.4 rho(0) fluctuatio...
Spinodal instabilities in nuclear matter in a stochastic relativistic mean-field approach
Ayik, S.; Yılmaz Tüzün, Özgül; Er, N.; Gokalp, A.; Ring, P. (American Physical Society (APS), 2009-09-01)
Spinodal instabilities and early growth of baryon density fluctuations in symmetric nuclear matter are investigated in the basis of the stochastic extension of the relativistic mean-field approach in the semiclassical approximation. Calculations are compared with the results of nonrelativistic calculations based on Skyrme-type effective interactions under similar conditions. A qualitative difference appears in the unstable response of the system: the system exhibits most unstable behavior at higher baryon d...
Citation Formats
A. Gokalp, A. Kucukarslan, S. Solmaz, and O. Yılmaz, “Scalar a(0)(980) meson in phi ->pi(0)eta gamma decay,” JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, pp. 2783–2793, 2002, Accessed: 00, 2020. [Online]. Available: