Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Study of dynamics of the process e+e-→ π+π-π in the energy range 1.15–2.00 GeV : SND Collaboration. / Achasov, M. N.; Barnyakov, A. Yu; Baykov, A. A. и др.
в: European Physical Journal C, Том 80, № 10, 993, 01.10.2020.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Study of dynamics of the process e+e-→ π+π-π in the energy range 1.15–2.00 GeV
T2 - SND Collaboration
AU - Achasov, M. N.
AU - Barnyakov, A. Yu
AU - Baykov, A. A.
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 - Kirpotin, A. N.
AU - Kardapoltsev, L. V.
AU - Kasaev, A. S.
AU - Kharlamov, A. G.
AU - Koop, I. A.
AU - Korol, A. A.
AU - Kovrizhin, D. P.
AU - Kupich, A. S.
AU - Martin, K. A.
AU - Melnikova, N. A.
AU - Muchnoy, N. Yu
AU - Obrazovsky, A. E.
AU - Pakhtusova, E. V.
AU - Pugachev, K. V.
AU - Rabusov, D. V.
AU - Rogovsky, Yu A.
AU - Savchenko, Y. S.
AU - Senchenko, A. I.
AU - Serednyakov, S. I.
AU - Shatilov, D. N.
AU - Shatunov, Yu M.
AU - Shtol, D. A.
AU - Shwartz, D. B.
AU - Silagadze, Z. K.
AU - Surin, I. K.
AU - Timoshenko, M. V.
AU - Usov, Yu V.
AU - Zhabin, V. N.
AU - Zhulanov, V. V.
PY - 2020/10/1
Y1 - 2020/10/1
N2 - The dynamics of the process e+e-→ π+π-π is studied in the energy region from 1.15 to 2.00 GeV using data accumulated with the SND detector at the VEPP-2000 e+e- collider. The Dalitz plot distribution and π+π- mass spectrum are analyzed in a model including the intermediate states ρ(770) π, ρ(1450) π, and ωπ. As a result, the energy dependences of the ρ(770) π and ρ(1450) π cross sections and the relative phases between the ρ(770) π amplitude and the ρ(1450) π and ωπ amplitudes are obtained. The ρ(1450) π cross section has a peak in the energy region of the ω(1650) resonance (1.55–1.75 GeV). In this energy range the contributions of the ρ(770) π and ρ(1450) π states are of the same order of magnitude. No resonance structure near 1.65 GeV is observed in the ρ(770) π cross section. We conclude that the intermediate state ρ(1450) π gives a significant contribution to the decay of ω(1650) → π+π-π, whereas the ρ(770) π mechanism dominates in the decay ω(1420) → π+π-π.
AB - The dynamics of the process e+e-→ π+π-π is studied in the energy region from 1.15 to 2.00 GeV using data accumulated with the SND detector at the VEPP-2000 e+e- collider. The Dalitz plot distribution and π+π- mass spectrum are analyzed in a model including the intermediate states ρ(770) π, ρ(1450) π, and ωπ. As a result, the energy dependences of the ρ(770) π and ρ(1450) π cross sections and the relative phases between the ρ(770) π amplitude and the ρ(1450) π and ωπ amplitudes are obtained. The ρ(1450) π cross section has a peak in the energy region of the ω(1650) resonance (1.55–1.75 GeV). In this energy range the contributions of the ρ(770) π and ρ(1450) π states are of the same order of magnitude. No resonance structure near 1.65 GeV is observed in the ρ(770) π cross section. We conclude that the intermediate state ρ(1450) π gives a significant contribution to the decay of ω(1650) → π+π-π, whereas the ρ(770) π mechanism dominates in the decay ω(1420) → π+π-π.
KW - CROSS-SECTION
KW - PI(+)PI(-)PI(0)
KW - ANNIHILATION
UR - http://www.scopus.com/inward/record.url?scp=85094209373&partnerID=8YFLogxK
U2 - 10.1140/epjc/s10052-020-08524-4
DO - 10.1140/epjc/s10052-020-08524-4
M3 - Article
AN - SCOPUS:85094209373
VL - 80
JO - European Physical Journal C
JF - European Physical Journal C
SN - 1434-6044
IS - 10
M1 - 993
ER -
ID: 25842357