|
Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2011, Volume 94, Issue 1, Pages 13–18
(Mi jetpl1942)
|
|
|
|
This article is cited in 1 scientific paper (total in 1 paper)
FIELDS, PARTICLES, AND NUCLEI
$\eta(1475)$ and $f_1(1420)$ resonances in the decay processes $J/\psi\to\gamma(\rho\rho,\gamma\rho^0,\gamma\phi)$ and in $\gamma\gamma^*$ collisions
N. N. Achasov, G. N. Shestakov Sobolev Institute of Mathematics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk
Abstract:
A scenario that removes the contradiction between the suppression of the $\eta(1475)\to\gamma \gamma$ decay width and the strong coupling of $\eta(1475)$ to the $\rho\rho$, $\omega\omega$ and $\gamma\rho^0$ channels and which leads to a nontrivial prediction for the manifestation of $\eta(1475)$ in $\gamma\gamma^*(Q^2) $ collisions is considered. Data on the dependence of the cross section for the reaction $\gamma\gamma^*(Q^2)\to K\bar K\pi$ on the photon virtuality in the energy range $1.35$–$1.55$ GeV are explained here by the production of an $\eta(1475)$ resonance in contrast to their standard interpretation in terms of the $f_1 (1420)$ resonance. Experimental verification of the present explanation requires determining the spin-parity of resonance contributions, $R$, in the reactions $\gamma\gamma^*(Q^2)\to R\to K\bar K\pi$ and $J/\psi\to\gamma R\to\gamma(\gamma\rho^0,\gamma\phi)$.
Received: 16.05.2011
Citation:
N. N. Achasov, G. N. Shestakov, “$\eta(1475)$ and $f_1(1420)$ resonances in the decay processes $J/\psi\to\gamma(\rho\rho,\gamma\rho^0,\gamma\phi)$ and in $\gamma\gamma^*$ collisions”, Pis'ma v Zh. Èksper. Teoret. Fiz., 94:1 (2011), 13–18; JETP Letters, 94:1 (2011), 11–17
Linking options:
https://www.mathnet.ru/eng/jetpl1942 https://www.mathnet.ru/eng/jetpl/v94/i1/p13
|
Statistics & downloads: |
Abstract page: | 180 | Full-text PDF : | 48 | References: | 39 |
|