Measurement of the $e^+e^- \to π^0γ$ 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; 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

doi:10.1103/physrevd.98.112001

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arXiv · 1809.07631

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

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Abstract

The process $e^+e^- \to π^0γ$ 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 $e^+e^- \to π^0γ$ 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 $e^+e^- \to π^0γ$ is studied for the first time.

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M. N. Achasov, A. Yu. Barnyakov, K. I. Beloborodov, A. V. Berdyugin, D. E. Berkaev, A. G. Bogdanchikov, A. A. Botov, T. V. Dimova, 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. 2018-09-19. Measurement of the $e^+e^- \to π^0γ$ cross section in the energy range 1.075--2 GeV at SND. https://doi.org/10.1103/physrevd.98.112001

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