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Measurement of the $e^+e^-\toηγ$ cross section near the $ϕ(1020)$ resonance with the SND detector

Fuente: arXiv

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Auteurs principaux:	SND Collaboration, Achasov, M. N., Alizzi, A. E., Barnyakov, A. Yu., Bedarev, E. V., Beloborodov, K. I., Berdyugin, A. V., Bogdanchikov, A. G., Botov, A. A., Chistyakov, D. E., Dimova, T. V., Druzhinin, V. P., Kardapoltsev, L. V., Kasaev, A. S., Kattsin, A. A., Kharlamov, A. G., Koop, I. A., Korol, A. A., Kovrizhin, D. P., Kupich, A. S., Kryukov, A. P., Melnikova, N. A., Muchnoi, N. Yu., Obrazovsky, A. E., Oorzhak, A. A., Pakhtusova, E. V., Polomoshnov, I. A., Pugachev, K. V., Rastigeev, S. A., Rogovsky, Yu. A., Senchenko, A. I., Serednyakov, S. I., Shatunov, Yu. M., Shtol, D. A., Silagadze, Z. K., Sungurov, K. D., Surin, I. K., Usov, Yu. V., Zhabin, V. N., Zharinov, Yu. M., Zhulanov, V. V.
Format:	Preprint
Publié:	2025
Sujets:	High Energy Physics - Experiment
Accès en ligne:	Acceder al recurso
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_version_	1866914102578774016
author	SND Collaboration Achasov, M. N. Alizzi, A. E. Barnyakov, A. Yu. Bedarev, E. V. Beloborodov, K. I. Berdyugin, A. V. Bogdanchikov, A. G. Botov, A. A. Chistyakov, D. E. Dimova, T. V. Druzhinin, V. P. Kardapoltsev, L. V. Kasaev, A. S. Kattsin, A. A. Kharlamov, A. G. Koop, I. A. Korol, A. A. Kovrizhin, D. P. Kupich, A. S. Kryukov, A. P. Melnikova, N. A. Muchnoi, N. Yu. Obrazovsky, A. E. Oorzhak, A. A. Pakhtusova, E. V. Polomoshnov, I. A. Pugachev, K. V. Rastigeev, S. A. Rogovsky, Yu. A. Senchenko, A. I. Serednyakov, S. I. Shatunov, Yu. M. Shtol, D. A. Silagadze, Z. K. Sungurov, K. D. Surin, I. K. Usov, Yu. V. Zhabin, V. N. Zharinov, Yu. M. Zhulanov, V. V.
author_facet	SND Collaboration Achasov, M. N. Alizzi, A. E. Barnyakov, A. Yu. Bedarev, E. V. Beloborodov, K. I. Berdyugin, A. V. Bogdanchikov, A. G. Botov, A. A. Chistyakov, D. E. Dimova, T. V. Druzhinin, V. P. Kardapoltsev, L. V. Kasaev, A. S. Kattsin, A. A. Kharlamov, A. G. Koop, I. A. Korol, A. A. Kovrizhin, D. P. Kupich, A. S. Kryukov, A. P. Melnikova, N. A. Muchnoi, N. Yu. Obrazovsky, A. E. Oorzhak, A. A. Pakhtusova, E. V. Polomoshnov, I. A. Pugachev, K. V. Rastigeev, S. A. Rogovsky, Yu. A. Senchenko, A. I. Serednyakov, S. I. Shatunov, Yu. M. Shtol, D. A. Silagadze, Z. K. Sungurov, K. D. Surin, I. K. Usov, Yu. V. Zhabin, V. N. Zharinov, Yu. M. Zhulanov, V. V.
contents	In the experiment with the SND detector at the VEPP-2000 $e^+e^-$ collider, the $e^+e^-\toηγ$ cross section is measured in the energy range $E = 980 - 1060$ MeV. The measurement is carried out in the $η\to 2γ$ decay mode. Data with an integrated luminosity of 73 pb$^{-1}$ collected in 2018 and 2024 are used in the analysis. The measured cross section is the most accurate to date and is higher compared to other measurements. From the fit to the cross section data with the vector meson dominance model, the value of the product of the branching fractions $B(ϕ\to e^+e^-)B(ϕ\to ηγ)$ has been obtained.
format	Preprint
id	arxiv_https___arxiv_org_abs_2510_09019
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Measurement of the $e^+e^-\toηγ$ cross section near the $ϕ(1020)$ resonance with the SND detector SND Collaboration Achasov, M. N. Alizzi, A. E. Barnyakov, A. Yu. Bedarev, E. V. Beloborodov, K. I. Berdyugin, A. V. Bogdanchikov, A. G. Botov, A. A. Chistyakov, D. E. Dimova, T. V. Druzhinin, V. P. Kardapoltsev, L. V. Kasaev, A. S. Kattsin, A. A. Kharlamov, A. G. Koop, I. A. Korol, A. A. Kovrizhin, D. P. Kupich, A. S. Kryukov, A. P. Melnikova, N. A. Muchnoi, N. Yu. Obrazovsky, A. E. Oorzhak, A. A. Pakhtusova, E. V. Polomoshnov, I. A. Pugachev, K. V. Rastigeev, S. A. Rogovsky, Yu. A. Senchenko, A. I. Serednyakov, S. I. Shatunov, Yu. M. Shtol, D. A. Silagadze, Z. K. Sungurov, K. D. Surin, I. K. Usov, Yu. V. Zhabin, V. N. Zharinov, Yu. M. Zhulanov, V. V. High Energy Physics - Experiment In the experiment with the SND detector at the VEPP-2000 $e^+e^-$ collider, the $e^+e^-\toηγ$ cross section is measured in the energy range $E = 980 - 1060$ MeV. The measurement is carried out in the $η\to 2γ$ decay mode. Data with an integrated luminosity of 73 pb$^{-1}$ collected in 2018 and 2024 are used in the analysis. The measured cross section is the most accurate to date and is higher compared to other measurements. From the fit to the cross section data with the vector meson dominance model, the value of the product of the branching fractions $B(ϕ\to e^+e^-)B(ϕ\to ηγ)$ has been obtained.
title	Measurement of the $e^+e^-\toηγ$ cross section near the $ϕ(1020)$ resonance with the SND detector
topic	High Energy Physics - Experiment
url	https://arxiv.org/abs/2510.09019