Published December 2005
| Version v1
Journal article
Study of the Process e+e- → π+π- in the Energy Region 400 < √(s)< 1000 MeV
Creators
- Achasov, M.N.1, 2
- Beloborodov, K.I.1, 2
- Berdyugin, A.V.1, 2
- Bogdanchikov, A.G.1, 2
- Bozhenok, A.V.1, 2
- Bukin, A.D.1, 2
- Bukin, D.A.1, 2
- Dimova, T.V.1, 2
- Druzhinin, V.P.1, 2
- Golubev, V.B.1, 2
- Koop, I.A.1, 2
- Korol, A.A.1, 2
- Koshuba, S.V.1, 2
- Lysenko, A.P.1, 2
- Otboev, A.V.1, 2
- Pakhtusova, E.V.1, 2
- Serednyakov, S.I.1, 2
- Shatunov, Yu.M.1, 2
- Sidorov, V.A.1, 2
- Silagadze, Z.K.1, 2
- and others
- 1. Novosibirsk State University, Novosibirsk, 630090 (Russian Federation)
- 2. Budker Institute of Nuclear Physics, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090 (Russian Federation)
Description
The cross section of the process e+e- → π+π- was measured in the spherical neutral detector experiment at the VEPP-2M collider in the energy region 400 < √(s)< 1000 MeV. This measurement was based on about 12.4 x 106 selected collinear events, which include 7.4 x 106 e+e- → e+e-, 4.5 x 106 e+e- → π+π-, and 0.5 x 106 e+e- → μ+μ- selected events. The systematic uncertainty of cross section determination is 1.3%. The ρ-meson parameters were determined as mρ = 774.9 ± 0.4 ± 0.5 MeV, Γρ = 146.5 ± 0.8 ± 1.5 MeV, and σ(ρ → π+π-) = 1220 ± 7 ± 16 nb and the parameters of the G-parity suppressed decay ω → π+π- as σ(ω → π+π-) = 29.9 ± 1.4 ± 1.0 nb and φρω = 113.5 ± 1.3 ± 1.7 deg
Additional details
Identifiers
- DOI
- 10.1134/1.2163921;
Publishing Information
- Journal Title
- Journal of Experimental and Theoretical Physics
- Journal Volume
- 101
- Journal Issue
- 6
- Journal Page Range
- p. 1053-1070
- ISSN
- 1063-7761
- CODEN
- JTPHES
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37075171
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Translation
- Descriptors DEI
- ANNIHILATION; CROSS SECTIONS; ELECTRON-POSITRON INTERACTIONS; ELECTRONS; ELECTROPRODUCTION; G PARITY; HADRONIC PARTICLE DECAY; MEV RANGE 100-1000; MUONS MINUS; MUONS PLUS; OMEGA BARYONS; PAIR PRODUCTION; PIONS MINUS; PIONS PLUS; POSITRONS; RHO-770 MESONS; SPHERICAL CONFIGURATION
- Descriptors DEC
- ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BARYONS; BASIC INTERACTIONS; BOSONS; CONFIGURATION; DECAY; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; HADRONS; HYPERONS; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; LEPTONS; MATTER; MESONS; MEV RANGE; MUONS; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; PIONS; PSEUDOSCALAR MESONS; STRANGE PARTICLES; VECTOR MESONS
Optional Information
- Notes
- Translated from Zhurnal Ehksperimental'noj i Teoreticheskoj Fiziki, ISSN 0044-4510, 128, 1201-1219 (No. 6, 2005); (c) 2005 Pleiades Publishing, Inc.