The tensor mesons f, A2 and A3 are analysed within the frangework of QCD sum rules. We account for the effects of gluon and quark condensates phenomenologically, via the matrix elements . The G2 term in the sum rules is found with the help of a new computational technique developed recently. Our results for the masses of f, A2, A3 and their coupling constants agree with experiment.


Isovector axial vector and pseudoscalar transition form factors of Delta in QCD
KÜÇÜKARSLAN, AYŞE; Ozdem, U.; Özpineci, Altuğ (2014-09-03)
We investigate the isovector axial vector and pseudoscalar form factors of Delta baryon by employing light-cone QCD sum rules. Numerical calculations show that the form factors can be well fitted by the exponential form. We make a comparison with the predictions of lattice QCD, chiral perturbation theory and quark model.
QCD coupling constants and VDM
ERKOL, GÜRAY; Özpineci, Altuğ; Zamiralov, V. S. (2012-06-21)
QCD sum rules for coupling constants of vector mesons with baryons are constructed. The corresponding QCD sum rules for electric charges and magnetic moments are also derived and with the use of vector-meson-dominance model related to the coupling constants. The vector-dominance model (VDM) role as the criterium of reciprocal validity of the sum rules is considered.
QCD sum rules for the coupling constants g(KYN) and g(KY Xi)
Aliev, T.; Zamiralov, V. S.; Lepshokov, S. N.; Özpineci, Altuğ; Yakovlev, S. B. (Pleiades Publishing Ltd, 2007-05-01)
New relations between Borel QCD sum rules for the strong couplings of baryons to kaons are derived. It is shown that, on the basis of the sum rules for the coupling constants g(pi Sigma Sigma) and g(pi Sigma Lambda), the corresponding sum rules can be directly obtained for the coupling constants g(KYN) and g(KY Xi), Y = Sigma, Lambda. The values of these coupling constants are calculated in the fiducial interval 1.0 <= M-2 <= 1.4 GeV2 at t = -1.
Tensor form factors of the octet hyperons in QCD
Küçükarslan, Ayşe; Özdem, Ulaş; Özpineci, Altuğ (American Physical Society (APS), 2016-11-11)
Light-cone QCD sum rules to leading order in QCD are used to investigate the tensor form factors of the Sigma-Sigma,Xi-Xi, and Sigma-Lambda transitions in the range 1 GeV2 <= Q(2) <= 10 GeV2. The DAs of Sigma,Xi, and. baryon have been calculated without higher-order terms. Then, studies including higher-order corrections have been done for the Sigma and. baryon Lambda The resulting form factors are obtained using these two DAs. We make a comparison with the predictions of the chiral quark soliton model.
Pseudospin and spin symmetry in Dirac-Morse problem with a tensor potential
AYDOĞDU, OKTAY; Sever, Ramazan (Elsevier BV, 2011-09-14)
Under the conditions of the pseudospin and spin symmetry, approximate analytical solutions of the Dirac-Morse problem with Coulomb-like tensor potential are presented. The energy eigenvalue equations are found and corresponding radial wave functions are obtained in terms of confluent hypergeometric functions. The energy eigenvalues are calculated numerically in the absence and presence of the tensor potential. We also investigate the contribution of the potential parameters to the energy splitting of the ps...
Citation Formats
T. Alıyev, “QCD SUM-RULES AND TENSOR MESONS,” SOVIET JOURNAL OF NUCLEAR PHYSICS-USSR, pp. 891–896, 1982, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38349.