Measurement of the $e^+e^- \to \pi^0\gamma$ cross section in the energy range 1.075--2 GeV at SND

A. A. Botov; A. A. Korol; A. E. Obrazovsky; A. G. Bogdanchikov; A. G. Kharlamov; A. I. Senchenko; A. S. Kasaev; A. S. Kupich; A. V. Berdyugin; A. V. Vasiljev

arxiv: 1809.07631 · v1 · pith:VMBA4MXNnew · submitted 2018-09-19 · ✦ hep-ex

Measurement of the e^+e^- to π⁰γ cross section in the energy range 1.075--2 GeV at SND

M. N. Achasov , A. Yu. Barnyakov , K. I. Beloborodov , A. V. Berdyugin , D. E. Berkaev , A. G. Bogdanchikov , A. A. Botov , T. V. Dimova

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V. P. Druzhinin V. B. Golubev L. V. Kardapoltsev A. S. Kasaev A. G. Kharlamov I. A. Koop A. A. Korol D. P. Kovrizhin S. V. Koshuba A. S. Kupich R. A. Litvinov K. A. Martin N. A. Melnikova N. Yu. Muchnoi A. E. Obrazovsky E. V. Pakhtusova K. V. Pugachev Yu. A. Rogovsky A. I. Senchenko S. I. Serednyakov Z. K. Silagadze P. Yu. Shatunov Yu. M. Shatunov D. A. Shtol D. B. Shwartz I. K. Surin Yu. V. Usov A. V. Vasiljev V. V. Zhulanov

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keywords gammarangecrossenergyprocesssectionstudiedbasing

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The process $e^+e^- \to \pi^0\gamma$ is studied with the SND detector at the VEPP-2000 $e^+e^-$ collider. Basing on data with an integrated luminosity of 41 pb$^{-1}$ recorded in 2010-2012 we measure the $e^+e^- \to \pi^0\gamma$ cross section in the center-of-mass energy range from 1.075 up to 2 GeV. In the range 1.4-2.0 GeV the process $e^+e^- \to \pi^0\gamma$ is studied for the first time.

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