Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-11-29
Int.J.Mod.Phys.E17:1041-1059,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
REVTEX4, 23 pages, 7 figures
Scientific paper
10.1142/S0218301308010325
In this article, we investigate the contribution of the high twist Feynman diagrams to the large $p_{T}$ single pseudoscalar and vector mesons inclusive production cross section in two-photon collisions and we present the general formulae for the high and leading twist differential cross sections. The pion wave function where two non-trivial Gegenbauer coefficients $a_2$ and $a_4$ have been extracted from the CLEO data, Braun-Filyanov pion wave function, the asymptotic and the Chernyak-Zhitnitsky wave functions are used in the calculations. For $\rho$-meson we used Ball-Braun wave function. The results of all the calculations reveal that the high twist cross sections, the ratio R, the dependence transverse momentum $p_{T}$ and the rapidity $y$ of meson in $\Phi_{CLEO}(x,Q^2)$ wave function case is very close to the $\Phi_{asy}(x)$ asymptotic wave function case. It is shown that the high twist contribution to the cross section depends on the choice of the meson wave functions.
Ahmadov Azar I.
Boztosun Ismail
Dadashov E. A.
Soylu A.
No associations
LandOfFree
Higher Twist Effects in Photon-Photon Collisions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Higher Twist Effects in Photon-Photon Collisions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Higher Twist Effects in Photon-Photon Collisions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-373564