Abstract
The pion transition form factor for the process γ*γ* → π0 at spacelike values of photon momenta is calculated within the effective quark-meson model with the interaction induced by instanton exchange. The leading and next-to-leading order power asymptotics of the form factor and the relation between the light-cone pion distribution amplitudes of twists 2 and 4 and the dynamically generated quark mass are found.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
CELLO Collab. (H.-J. Behrend et al.), Z. Phys. C 49, 401 (1991).
CELLO Collab. (J. Gronberg et al.), Phys. Rev. D 57, 33 (1998).
G. P. Lepage and S. J. Brodsky, Phys. Lett. B 87, 359 (1979); Phys. Rev. D 22, 2157 (1980).
F. Del Aguila and M. K. Chase, Nucl. Phys. B 193, 517 (1981); E. Braaten, Phys. Rev. D 28, 524 (1983); E. P. Kadantseva, S. V. Mikhailov, and A. V. Radyushkin, Yad. Fiz. 44, 507 (1986) [Sov. J. Nucl. Phys. 44, 326 (1986)].
V. L. Chernyak, A. R. Zhitnitskii, and I. R. Zhitnitskii, Yad. Fiz. 38, 1074 (1983) [Sov. J. Nucl. Phys. 38, 645 (1983)]; V. A. Novikov, M. A. Shifman, A. I. Vainshtein, et al., Nucl. Phys. B 237, 525 (1984).
A. S. Gorsky, Yad. Fiz. 50, 796 (1989) [Sov. J. Nucl. Phys. 50, 498 (1989)].
A. Khodjamirian, Eur. Phys. J. C 6, 477 (1999); T. Yeh, hep-ph/0107018.
I. V. Anikin, A. E. Dorokhov, and L. Tomio, Fiz. Élem. Chastits At. Yadra 31, 1023 (2000) [Phys. Part. Nucl. 31, 509 (2000)].
A. E. Dorokhov and W. Broniowski, Phys. Rev. D 65, 094007 (2002).
V. M. Belyaev and B. L. Ioffe, Zh. Éksp. Teor. Fiz. 83, 876 (1982) [Sov. Phys. JETP 56, 493 (1982)]; A. A. Ovchinnikov and A. A. Pivovarov, Yad. Fiz. 48, 1135 (1988) [Sov. J. Nucl. Phys. 48, 721 (1988)].
A. E. Dorokhov, S. V. Esaibegian, and S. V. Mikhailov, Phys. Rev. D 56, 4062 (1997).
A. E. Dorokhov, hep-ph/0206088.
V. M. Braun and I. E. Filyanov, Z. Phys. C 48, 239 (1990).
S. V. Esaibegyan and S. N. Tamaryan, Yad. Fiz. 51, 485 (1990) [Sov. J. Nucl. Phys. 51, 310 (1990)]; A. E. Dor-okhov, Nuovo Cimento A 109, 391 (1996); V. Yu. Petrov and P. V. Pobylitsa, hep-ph/9712203.
S. V. Mikhailov and A. V. Radyushkin, Yad. Fiz. 52, 1095 (1990) [Sov. J. Nucl. Phys. 52, 697 (1990)]; A. P. Bakulev, S. V. Mikhailov, and N. G. Stefanis, Phys. Lett. B 508, 279 (2001).
P. Kroll and M. Raulfs, Phys. Lett. B 387, 848 (1996); I. V. Anikin, A. E. Dorokhov, and L. Tomio, Phys. Lett. B 475, 361 (2000); M. Diehl, P. Kroll, and C. Vogt, Eur. Phys. J. C 22, 439 (2001).
K. Van Acoleyen and H. Verschelde, hep-ph/0203211.
Author information
Authors and Affiliations
Additional information
From Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 77, No. 2, 2003, pp. 68–72.
Original English Text Copyright © 2003 by Dorokhov.
This article was submitted by the author in English.