The measurement of the omega meson parameters with the CMD-3 detector at the electron-positron collider VEPP-2000
D. S. Vasileuskaya,
D. N. Grigoriev,
V. L. Ivanov,
V. F. Kazanin,
A. N. Kozyrev,
A. A. Ruban,
A. E. Ryzhenenkov,
S. S. Tolmachev,
G. V. Fedotovich,
D. N. Shemyakin,
D. V. Shoukavy,
L. B. Epshteyn https://doi.org/10.29235/1561-2430-2022-58-3-327-336
Abstract
The cross section of the process e+ e– → π+ π– π0 was measured with the CMD-3 detector at the electron-positron collider VEPP-2000 in the ω meson energy region based on the data collected in 2013–2018 and corresponding to an integrated luminosity of 40 pb–1. The parameters of the ω-meson: Mω = 782.67 ± 0.01 ± 0.1 MeV, Γω = 8.56 ± 0.02 ± 0.07 MeV, σ0(ω → π+ π– π) = 1629 ± 3 ± 36 nb with the precision match or even exceeding the previous data are obtained.
About the Authors
D. S. Vasileuskaya
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
Belarus
Darya S. Vasileuskaya – Junior Researcher
68-2, Nezavisimosti Ave., 220072, Minsk
D. N. Grigoriev
Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sсiences; Novosibirsk State Technical University; Novosibirsk State University
Russian Federation
Russian Federation
Dmitry N. Grigoriev – Ph. D. (Physics and Mathematics), Head of Laboratory; Head of Laboratory; Associate Professor
20, K. Marksa Ave., 630073, Novosibirsk; 2, Pirogova Str., Novosibirsk, Russia, 630090; 2, Pirogova Str., 630090, Novosibirsk
V. L. Ivanov
Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sсiences; Novosibirsk State Technical University
Russian Federation
Russian Federation
Vyacheslav L. Ivanov – Researcher; Lecturer
2, Pirogova Str., 630090, Novosibirsk; 11, Akademika Lavrentieva Ave., 630090, Novosibirsk
V. F. Kazanin
Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sсiences; Novosibirsk State Technical University
Russian Federation
Russian Federation
Vasily F. Kazanin – Senior Researcher; Senior Lecturer
2, Pirogova Str., 630090, Novosibirsk; 11, Akademika Lavrentieva Ave., 630090, Novosibirsk
A. N. Kozyrev
Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sсiences; Novosibirsk State Technical University
Russian Federation
Russian Federation
Aleksey N. Kozyrev – Researcher; Lecturer
2, Pirogova Str., 630090, Novosibirsk; 11, Akademika Lavrentieva Ave., 630090, Novosibirsk
A. A. Ruban
Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sсiences; Novosibirsk State Technical University
Russian Federation
Russian Federation
Aleksandr A. Ruban – Senior Researcher; Lecturer
2, Pirogova Str., 630090, Novosibirsk; 11, Akademika Lavrentieva Ave., 630090, Novosibirsk
A. E. Ryzhenenkov
Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sсiences; Novosibirsk State Technical University
Russian Federation
Russian Federation
Artem E. Ryzhenenkov – Junior Researcher; Senior
Lecturer
2, Pirogova Str., 630090, Novosibirsk; 11, Akademika Lavrentieva
Ave., 630090, Novosibirsk
S. S. Tolmachev
Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sсiences
Russian Federation
Russian Federation
Sergey S. Tolmachev – Junior Researcher; Assistant
2, Pirogova Str., 630090, Novosibirsk; 11, Akademika Lavrentieva
Ave., 630090, Novosibirsk
G. V. Fedotovich
Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sсiences; Novosibirsk State Technical University
Russian Federation
Russian Federation
Gennady V. Fedotovich – Dr. Sc. (Physics and Mathematics), Chief Researcher; Professor, Head of the Physics Department of PF and SUNC NSU
2, Pirogova Str., 630090, Novosibirsk; 11, Akademika Lavrentieva Ave., 630090, Novosibirsk
D. N. Shemyakin
Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sсiences; Novosibirsk State Technical University
Russian Federation
Russian Federation
Dmitry N. Shemyakin – Researcher; Senior Lecturer
2, Pirogova Str., 630090, Novosibirsk; 11, Akademika Lavrentieva Ave., 630090, Novosibirsk
D. V. Shoukavy
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
Belarus
Dzmitry V. Shoukavy – Ph. D. (Physics and Mathematics), Leading Researcher
68-2, Nezavisimosti Ave., 220072, Minsk
L. B. Epshteyn
Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sсiences; Novosibirsk State University
Russian Federation
Russian Federation
Leonid В. Epshteyn – Researcher; Researcher; Senior Lecturer
20, K. Marks Ave., 630073, Novosibirsk; 11, Akademika Lavrentieva Ave., 630090, Novosibirsk; 2, Pirogova Str., 630090, Novosibirsk
References
1. Abi B., Albahri T., Al-Kilani S., Allspach D., Alonzi L. P., Anastasi A. et al. (Muon g – 2 Collaboration). Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm. Physical Review Letters, 2021. vol. 126, no. 14, pp. 141801. https://doi.org/10.1103/PhysRevLett.126.141801
2. Brown H. N., Bunce G., Carey R. M., Cushman P., Danby G. T., Debevec P. T. et al. (Muon g – 2 Collaboration). Precise Measurement of the Positive Muon Anomalous Magnetic Moment. Physical Review Letters, 2001, vol. 86, no. 11, pp. 2227–2231. https://doi.org/10.1103/PhysRevLett.86.2227
3. Khazin B. Physics and Detectors for VEPP-2000. Nuclear Physics B – Proceedings Supplements, 2008, vol. 181–182, pp. 376–380. https://doi.org/10.1016/j.nuclphysbps.2008.09.068
4. Achasov M. N., Beloborodov K. I., Berdyugin A. V., Bogdanchikov A. G., Bozhenok A. V., Bukin A. D., Bukin D. A., Dimova T. V., Druzhinin V. P., Golubev V. B., Koop I. A., Korol A. A., Koshuba S. V., Lysenko A. P., Pakhtusova E. V., Serednyakov S. I., Shary V. V., Shatunov Yu. M., Silagadze Z. K., Skrinsky A. N., Valishev A. A., Vasiljev A. V. Study of the process е+ е– →π+ π– π0 in the energy region below 0.98 GeV. Physical Review D, 2003, vol. 68, no. 5, pp. 052006–052006-20. https://doi.org/10.1103/PhysRevD.68.052006
5. Akhmetshin R. R., Anashkin E. V., Aulchenko V. M., Banzarov V. S., Barkov L. M., Baru S. E. et al. Measurement of ω meson parameters in π+ π− π0 decay mode with CMD-2. Physics Letters B, 2000, vol. 476, no. 1–2, pp. 33–39. https://doi. org/10.1016/s0370-2693(00)00123-4
6. Vasileuskaya D. S., Grigoriev D. N., Dudko I. G., Ivanov V. L., Kazanin V. F., Kozyrev A. N., Ruban A. A., Ryzhenenkov A. E., Tolmachev S. S., Fedotovich G. V., Shemyakin D. N., Shoukavy D. V., Epshteyn L. B. Study of the process e + e– → π+ π– π0 with the CMD-3 detector at the electron-positron collider VEPP-2000. Vestsі Natsyianal’nai akademіі navuk Belarusі. Seryia fіzіka-matematychnykh navuk = Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics series, 2020, vol. 56, no. 4, pp. 449–458 (in Russian). https://doi.org/10.29235/1561-2430-2020-56-4-449-458
7. Abakumova E. V., Achasov M. N., Berkaev D. E., Kaminsky V. V., Muchnoi N. Y., Perevedentsev E. A., Pyata E. E., Shatunov Yu. M. Backscattering of Laser Radiation on Ultrarelativistic Electrons in a Transverse Magnetic Field: Evidence of MeV-Scale Photon Interference. Physical Review Letters, 2010, vol. 110, no. 14, pp. 140402. https://doi.org/10.1103/ PhysRevLett.110.140402
8. Ryzhenenkov A. E., Akhmetshin R. R., Amirkhanov A. N., Anisenkov A. V., Aulchenko V. M., Banzarov V. S. et al. Current status of luminosity measurement with the CMD-3 detector at the VEPP-2000 collider. Journal of Instrumentation, 2017, vol. 12, no. 07, pp. C07040. https://doi.org/10.1088/1748-0221/12/07/c07040
9. Verkerke W., Kirkby D. The RooFit toolkit for data modeling. Arxiv [Preprint], 2003. Available at: https://arxiv.org/abs/ physics/0306116 (accessed 15 October 2020). https://doi.org/10.48550/arXiv.physics/0306116
10. Kuraev E. A., Fadin V. S. On Radiative Corrections to e+ e– Single Photon Annihilation at High-Energy. Soviet Journal of Nuclear Physics, 1985, vol. 41, pp. 466–472.
11. Lees J. P., Poireau V., Tisserand V., Grauges E., Palano A., Eigen G. et al. (BABAR Collaboration). Study of the process е+ е– →π+ π– π0 using initial state radiation with BABAR. Physical Review D, 2021, vol. 104, no. 11, pp. 112003. https://doi. org/10.1103/PhysRevD.104.112003
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