MEASUREMENT OF THE ee→ πγ CROSS SECTION NEAR THE φ(1020) RESONANCE WITH THE SND DETECTOR

Achasov, M.N.; Barnyakov, A.Yu.; Beloborodov, K.I.; Berdyugin, A.V.; Berkaev, D.E.; Bogdanchikov, A.G.; Botov, A.A.; Denisov, V.S.; Dimova, T.V.; Druzhinin, V.P.; Zhabin, V. N.; Zhulanov, V. V.; Zemlyansky, I. M.; Kardapoltsev, L. V.; Kattsin, A. A.; Kirpotin, A. N.; Kovrizhin, D. P.; Koop, I. A.; Korol, A. A.; Kryukov, A. P.; Kupich, A. S.; Melnikova, N. A.; Muchnoi, N. Yu.; Obrazovsky, A. E.; Ovtin, I. V.; Oorzhak, A. A.; Pakhtusova, E. V.; Perevedentsev, E. A.; Pugachev, K. V.; Rogovsky, Yu. A.; Serednyakov, S. I.; Silagadze, Z. K.; Surin, I. K.; Timoshenko, M. V.; Usov, Yu. V.; Fomin, L. B.; Kharlamov, A. G.; Shatunov, Yu. M.; Shtol, D. A.; Eminov, E. A.

doi:10.7868/S3034628225030048

PII

S30346282S0044002725030048-1

DOI

10.7868/S3034628225030048

Publication type

Article

Status

Published

Authors

M.N. Achasov

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

A.Yu. Barnyakov

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

K.I. Beloborodov

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

A.V. Berdyugin

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

D.E. Berkaev

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

A.G. Bogdanchikov

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

A.A. Botov

Affiliation: Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences

V.S. Denisov

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

T.V. Dimova

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

V.P. Druzhinin

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

V. N. Zhabin

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

V. V. Zhulanov

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

I. M. Zemlyansky

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

L. V. Kardapoltsev

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

A. A. Kattsin

Affiliation: Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences

A. N. Kirpotin

Affiliation: Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences

D. P. Kovrizhin

Affiliation: Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences

I. A. Koop

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

A. A. Korol

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

A. P. Kryukov

Affiliation: Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences

A. S. Kupich

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

N. A. Melnikova

Affiliation: Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences

N. Yu. Muchnoi

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

A. E. Obrazovsky

Affiliation: Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences

I. V. Ovtin

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

A. A. Oorzhak

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

E. V. Pakhtusova

Affiliation: Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences

E. A. Perevedentsev

Affiliation: Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences

K. V. Pugachev

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

Yu. A. Rogovsky

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

S. I. Serednyakov

Affiliation: Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences

Z. K. Silagadze

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

I. K. Surin

Affiliation: Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences

M. V. Timoshenko

Affiliation: Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences

Yu. V. Usov

Affiliation: Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences

L. B. Fomin

Affiliation: Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences

A. G. Kharlamov

Affiliation:
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences
Novosibirsk State University

Yu. M. Shatunov

Affiliation: Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences

D. A. Shtol

Affiliation: Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences

E. A. Eminov

Affiliation: Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences

Volume/ Edition

Volume 88 / Issue number 3

Pages

274-285

Abstract

The ee → πγ cross section has been measured in the center-of-mass energy range from 1000 to 1060 MeV with the SND detector at the VEPP-2000 ee collider. At the maximum of the φ(1020) resonance the systematic uncertainty of the cross section measurement is 1.3%, and the statistical uncertainty is 2.2%. To date this is the most accurate measurement of the ee → πγ cross section. As a result of data approximation with the vector dominance model the decay probability B(φ → πγ) = (1.452 ± 0.024 ± 0.067) × 10 has been measured.

Keywords

Date of publication

17.12.2025

Year of publication

2025

Number of purchasers

Views

References

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GOST	Achasov M., Barnyakov A., Beloborodov K., Berdyugin A., Berkaev D., Bogdanchikov A., Botov A., Denisov V., Dimova T., Druzhinin V., Eminov E., Fomin L., Kardapoltsev L., Kattsin A., Kharlamov A., Kirpotin A., Koop I., Korol A., Kovrizhin D., Kryukov A., Kupich A., Melnikova N., Muchnoi N., Obrazovsky A., Oorzhak A., Ovtin I., Pakhtusova E., Perevedentsev E., Pugachev K., Rogovsky Y., Serednyakov S., Shatunov Y., Shtol D., Silagadze Z., Surin I., Timoshenko M., Usov Y., Zemlyansky I., Zhabin V., Zhulanov V. MEASUREMENT OF THE ee→ πγ CROSS SECTION NEAR THE φ(1020) RESONANCE WITH THE SND DETECTOR // Physics of Atomic Nuclei. – 2025. – V. 88. – Issue number 3 C. 274-285 . URL: https://yadphysras.ru/s30346282s0044002725030048-1/?version_id=120565. DOI: 10.7868/S3034628225030048
MLA	Achasov, M.N, Barnyakov, A.Yu, Beloborodov, K.I, Berdyugin, A.V, Berkaev, D.E, Bogdanchikov, A.G, Botov, A.A, Denisov, V.S, Dimova, T.V, Druzhinin, V.P, Eminov, E. A, Fomin, L. B, Kardapoltsev, L. V, Kattsin, A. A, Kharlamov, A. G, Kirpotin, A. N, Koop, I. A, Korol, A. A, Kovrizhin, D. P, Kryukov, A. P, Kupich, A. S, Melnikova, N. A, Muchnoi, N. Yu, Obrazovsky, A. E, Oorzhak, A. A, Ovtin, I. V, Pakhtusova, E. V, Perevedentsev, E. A, Pugachev, K. V, Rogovsky, Yu. A, Serednyakov, S. I, Shatunov, Yu. M, Shtol, D. A, Silagadze, Z. K, Surin, I. K, Timoshenko, M. V, Usov, Yu. V, Zemlyansky, I. M, Zhabin, V. N, Zhulanov, V. V "MEASUREMENT OF THE ee→ πγ CROSS SECTION NEAR THE φ(1020) RESONANCE WITH THE SND DETECTOR." Physics of Atomic Nuclei. 88.3 (2025).:274-285. DOI: 10.7868/S3034628225030048
APA	Achasov M., Barnyakov A., Beloborodov K., Berdyugin A., Berkaev D., Bogdanchikov A., Botov A., Denisov V., Dimova T., Druzhinin V., Eminov E., Fomin L., Kardapoltsev L., Kattsin A., Kharlamov A., Kirpotin A., Koop I., Korol A., Kovrizhin D., Kryukov A., Kupich A., Melnikova N., Muchnoi N., Obrazovsky A., Oorzhak A., Ovtin I., Pakhtusova E., Perevedentsev E., Pugachev K., Rogovsky Y., Serednyakov S., Shatunov Y., Shtol D., Silagadze Z., Surin I., Timoshenko M., Usov Y., Zemlyansky I., Zhabin V., Zhulanov V. (2025). MEASUREMENT OF THE ee→ πγ CROSS SECTION NEAR THE φ(1020) RESONANCE WITH THE SND DETECTOR. Physics of Atomic Nuclei. vol. 88, no. 3, pp.274-285 DOI: 10.7868/S3034628225030048

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MEASUREMENT OF THE ee→ πγ CROSS SECTION NEAR THE φ(1020) RESONANCE WITH THE SND DETECTOR

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MEASUREMENT OF THE ee→ πγ CROSS SECTION NEAR THE φ(1020) RESONANCE WITH THE SND DETECTOR

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