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This article is cited in 8 scientific papers (total in 8 papers)
FIELDS, PARTICLES, AND NUCLEI
Investigation of the $f_2(1270)$ and $a_2(1320)$ resonances in $\gamma^*(Q^2)\gamma$ collisions
N. N. Achasov, A. V. Kiselev, G. N. Shestakov Laboratory of Theoretical Physics, Sobolev Institute of Mathematics, Siberian Branch, Russian Academy of Sciences, Universitetskii pr. 4, Novosibirsk, 630090, Russia
Abstract:
The investigations of the $Q^2$ dependence of the cross sections for the formation of the $f_2(1270)$ and $a_2(1320)$ resonances in $\gamma^*(Q^2)\gamma$ collisions at the existing and future colliders with ultrahigh luminosity are discussed. An increase in $Q^2$ results in a change in the dominant helicity amplitude in the $\gamma^*(Q^2)\gamma\to f_2(1270)$ and $\gamma^*(Q^2)\gamma\to a_2(1320)$ reactions because of the QCD asymptotic behavior at large values of $Q^2$. The transition to the QCD asymptotic behavior in the $\gamma^*(Q^2)\gamma\to f_2(1270)$, $a_2(1320)$ amplitudes is shown to occur through the compensation of the contributions of the ground-state vector mesons $\rho$ and $\omega$ in the $Q^2$ channel by those of their radial excitations.
Received: 11.09.2015
Citation:
N. N. Achasov, A. V. Kiselev, G. N. Shestakov, “Investigation of the $f_2(1270)$ and $a_2(1320)$ resonances in $\gamma^*(Q^2)\gamma$ collisions”, Pis'ma v Zh. Èksper. Teoret. Fiz., 102:9 (2015), 655–659; JETP Letters, 102:9 (2015), 571–575
Linking options:
https://www.mathnet.ru/eng/jetpl4774 https://www.mathnet.ru/eng/jetpl/v102/i9/p655
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