English

Reanalysis of the $e^+e^-\to\eta\gamma$ reaction cross section

High Energy Physics - Experiment 2008-11-26 v1
Authors: M. N. Achasov , K. I. Beloborodov , A. V. Berdyugin , A. G. Bogdanchikov , A. D. Bukin , D. A. Bukin , T. V. Dimova , V. P. Druzhinin , V. B. Golubev , A. A. Korol , S. V. Koshuba , E. V. Pakhtusova , S. I. Serednyakov , Z. K. Silagadze , A. V. Vasiljev
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Abstract

In the experiment with the SND detector at the VEPP-2M e+e−e^+e^- collider measuring the e+e−→ηγe^+e^-\to \eta\gamma cross section in the energy range 0.6<s<1.38GeV0.6<\sqrt{s}<1.38 \mathrm{GeV} the reanalysis of data is performed. The goal is to improve the accuracy of the previous results by analysing ambiguities in the approximation of energy dependence of the e+e−→ηγe^+e^-\to \eta\gamma cross section, which were not taken into account in our previous study. We report new results on the approximation of the e+e−→ηγe^+e^-\to \eta\gamma cross section based on Vector Dominance Model under new model parameter assumptions.

Keywords

electron-positron annihilation cross sections nuclear reactions precision measurements in physics

Cite

@article{arxiv.0709.1007,
  title  = {Reanalysis of the $e^+e^-\to\eta\gamma$ reaction cross section},
  author = {M. N. Achasov and K. I. Beloborodov and A. V. Berdyugin and A. G. Bogdanchikov and A. D. Bukin and D. A. Bukin and T. V. Dimova and V. P. Druzhinin and V. B. Golubev and A. A. Korol and S. V. Koshuba and E. V. Pakhtusova and S. I. Serednyakov and Z. K. Silagadze and A. V. Vasiljev},
  journal= {arXiv preprint arXiv:0709.1007},
  year   = {2008}
}

Comments

3 pages, 4 tables

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