Analysis of the e+e → π0γ process using Anomaly Sum Rules approach


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Abstract

The e+e → γ* → π0γ process was considered using time-like pion transition form factor, obtained in the approach of the Anomaly Sum Rules (ASR). The total cross section and angular distribution of the process was calculated. As the result of the comparison with the data, it was shown that ASR approach provides their good description in the regions far from the pole. Also there was proposed a method allowing a reasonable description of data in the region of pole within the ASR approach. The strong restrictions for the parameters of the modified ASR approach were obtained.

About the authors

S. P. Khlebtsov

Institute of Theoretical and Experimental Physics

Author for correspondence.
Email: khlebtsov@itep.ru
Russian Federation, Moscow, 117218

A. G. Oganesian

Institute of Theoretical and Experimental Physics; Bogoliubov Laboratory of Theoretical Physics

Email: khlebtsov@itep.ru
Russian Federation, Moscow, 117218; Dubna, Moscow region, 141980

O. V. Teryaev

Bogoliubov Laboratory of Theoretical Physics

Email: khlebtsov@itep.ru
Russian Federation, Dubna, Moscow region, 141980

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