Measurement of the e + e − → π + π − process cross section with the SND detector at the VEPP-2000 collider in the energy region 0.525 < √s

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Measurement of the e ⁺ e ⁻ → π ⁺ π ⁻ process cross section with the SND detector at the VEPP-2000 collider in the energy region 0.525 < √s < 0.883 GeV. / SND Collaboration.

In: Journal of High Energy Physics, Vol. 2021, No. 1, 113, 01.2021.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{e1f7cab1641942b7a19a047e1d5e4e24,

title = "Measurement of the e + e − → π + π − process cross section with the SND detector at the VEPP-2000 collider in the energy region 0.525 < √s < 0.883 GeV",

abstract = "The cross section of the process e+e− → π+π− has been measured in the Spherical Neutral Detector (SND) experiment at the VEPP-2000 e+e− collider VEPP-2000 in the energy region 525 −1. The systematic uncertainty of the cross section determination is 0.8% at s> 0.600 GeV. The ρ meson parameters are obtained as mρ = 775.3 ± 0.5 ± 0.6 MeV, Γρ = 145.6 ± 0.6 ± 0.8 MeV, Bρ→e+e− × Bρ→π+π− = (4.89 ± 0.02 ± 0.04) × 10−5, and the parameters of the e+e− → ω → π+π− process, suppressed by G-parity, as Bω→e+e− × Bω→π+π− = (1.32 ± 0.06 ± 0.02) × 10−6 and and ϕρω = 110.7 ± 1.5 ± 1.0 degrees.",

keywords = "e-e Experiments",

author = "SND Collaboration and Achasov, {M. N.} and Baykov, {A. A.} and Barnyakov, {A. Yu} and Beloborodov, {K. I.} and Berdyugin, {A. V.} and Berkaev, {D. E.} and Bogdanchikov, {A. G.} and Botov, {A. A.} and Dimova, {T. V.} and Druzhinin, {V. P.} and Golubev, {V. B.} and Kardapoltsev, {L. V.} and Kharlamov, {A. G.} and Koop, {I. A.} and Korol, {A. A.} and Kovrizhin, {D. P.} and Kupich, {A. S.} and Lysenko, {A. P.} and Martin, {K. A.} and Melnikova, {N. A.} and Muchnoi, {N. Yu} and Obrazovsky, {A. E.} and Pakhtusova, {E. V.} and Perevedentsev, {E. A.} and Pugachev, {K. V.} and Savchenko, {Y. S.} and Serednyakov, {S. I.} and Silagadze, {Z. K.} and Shatunov, {P. Yu} and Shatunov, {Yu M.} and Shtol, {D. A.} and Shwartz, {D. B.} and Surin, {I. K.} and Usov, {Yu V.} and Zemlyansky, {I. M.} and Zhabin, {V. N.}",

note = "The authors are grateful to B. Malaescu and A. Keshavarzi for useful discussions. The work is supported in part by grants RFBR 18-02-00382-a, 18-02-00147-a, 20-02-00347-a, 20-02-00139-a, 20-02-00060-a. Publisher Copyright: {\textcopyright} 2021, The Author(s). Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",

year = "2021",

month = jan,

doi = "10.1007/JHEP01(2021)113",

language = "English",

volume = "2021",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer US",

number = "1",

}

RIS

TY - JOUR

T1 - Measurement of the e + e − → π + π − process cross section with the SND detector at the VEPP-2000 collider in the energy region 0.525 < √s < 0.883 GeV

AU - SND Collaboration

AU - Achasov, M. N.

AU - Baykov, A. A.

AU - Barnyakov, A. Yu

AU - Beloborodov, K. I.

AU - Berdyugin, A. V.

AU - Berkaev, D. E.

AU - Bogdanchikov, A. G.

AU - Botov, A. A.

AU - Dimova, T. V.

AU - Druzhinin, V. P.

AU - Golubev, V. B.

AU - Kardapoltsev, L. V.

AU - Kharlamov, A. G.

AU - Koop, I. A.

AU - Korol, A. A.

AU - Kovrizhin, D. P.

AU - Kupich, A. S.

AU - Lysenko, A. P.

AU - Martin, K. A.

AU - Melnikova, N. A.

AU - Muchnoi, N. Yu

AU - Obrazovsky, A. E.

AU - Pakhtusova, E. V.

AU - Perevedentsev, E. A.

AU - Pugachev, K. V.

AU - Savchenko, Y. S.

AU - Serednyakov, S. I.

AU - Silagadze, Z. K.

AU - Shatunov, P. Yu

AU - Shatunov, Yu M.

AU - Shtol, D. A.

AU - Shwartz, D. B.

AU - Surin, I. K.

AU - Usov, Yu V.

AU - Zemlyansky, I. M.

AU - Zhabin, V. N.

N1 - The authors are grateful to B. Malaescu and A. Keshavarzi for useful discussions. The work is supported in part by grants RFBR 18-02-00382-a, 18-02-00147-a, 20-02-00347-a, 20-02-00139-a, 20-02-00060-a. Publisher Copyright: © 2021, The Author(s). Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/1

Y1 - 2021/1

N2 - The cross section of the process e+e− → π+π− has been measured in the Spherical Neutral Detector (SND) experiment at the VEPP-2000 e+e− collider VEPP-2000 in the energy region 525 −1. The systematic uncertainty of the cross section determination is 0.8% at s> 0.600 GeV. The ρ meson parameters are obtained as mρ = 775.3 ± 0.5 ± 0.6 MeV, Γρ = 145.6 ± 0.6 ± 0.8 MeV, Bρ→e+e− × Bρ→π+π− = (4.89 ± 0.02 ± 0.04) × 10−5, and the parameters of the e+e− → ω → π+π− process, suppressed by G-parity, as Bω→e+e− × Bω→π+π− = (1.32 ± 0.06 ± 0.02) × 10−6 and and ϕρω = 110.7 ± 1.5 ± 1.0 degrees.

AB - The cross section of the process e+e− → π+π− has been measured in the Spherical Neutral Detector (SND) experiment at the VEPP-2000 e+e− collider VEPP-2000 in the energy region 525 −1. The systematic uncertainty of the cross section determination is 0.8% at s> 0.600 GeV. The ρ meson parameters are obtained as mρ = 775.3 ± 0.5 ± 0.6 MeV, Γρ = 145.6 ± 0.6 ± 0.8 MeV, Bρ→e+e− × Bρ→π+π− = (4.89 ± 0.02 ± 0.04) × 10−5, and the parameters of the e+e− → ω → π+π− process, suppressed by G-parity, as Bω→e+e− × Bω→π+π− = (1.32 ± 0.06 ± 0.02) × 10−6 and and ϕρω = 110.7 ± 1.5 ± 1.0 degrees.

KW - e-e Experiments

UR - http://www.scopus.com/inward/record.url?scp=85104374229&partnerID=8YFLogxK

U2 - 10.1007/JHEP01(2021)113

DO - 10.1007/JHEP01(2021)113

M3 - Article

AN - SCOPUS:85104374229

VL - 2021

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 1

M1 - 113

ER -

ID: 28716124

Measurement of the e + e − → π + π − process cross section with the SND detector at the VEPP-2000 collider in the energy region 0.525 < √s < 0.883 GeV

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Measurement of the e ⁺ e ⁻ → π ⁺ π ⁻ process cross section with the SND detector at the VEPP-2000 collider in the energy region 0.525 < √s < 0.883 GeV