Experiments at the VEPP-2M e+e- collider in Novosibirsk
Creators
Description
The present status of experiments at VEPP-2M e+e- collider, operating in Novosibirsk in the energy range 2E0 from 0.4 to 1.4 GeV with two detectors SND and CMD-2, is given. The total integrated luminosity, collected by the both detectors is close to 70 pb-1. New radiative decays of light vector mesons ρ, ω, phi into ππγ and ηπ0γ were measured, indicating on a possible exotic structure of light scalar mesons a0(980), f0(980). The decay phi → η'γ was measured with branching ratio, consistent with no large gluonium content in η'. The accuracy of many rare decays of light vector mesons was improved significantly. A broad peak was observed at the cross section of the e+e- → π+π-π0 reaction with the visible mass Mvis = 1220 ± 20 MeV and cross section in the maximum σ0 approx. = 5 nb. The peak can be interpreted as a ω-like resonance ω(1200)
Additional details
Identifiers
- PII
- S0920563201011318;
Publishing Information
- Journal Title
- Nuclear Physics. B, Proceedings Supplements
- Journal Volume
- 96
- Journal Issue
- 1-3
- Journal Page Range
- p. 197-204
- ISSN
- 0920-5632
- CODEN
- NPBSE7
Conference
- Title
- International Euroconference on quantum chromodynamics: 15 years of QCD
- Acronym
- QCD 00
- Dates
- 6-13 Jul 2000
- Place
- Montepellier (France)
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Kazakhstan
- INIS RN
- 34070613
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S43: PARTICLE ACCELERATORS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- A0-980 MESONS; BRANCHING RATIO; CROSS SECTIONS; DECAY; ELECTRON-ELECTRON COLLISIONS; F0-980 MESONS; GEV RANGE 01-10; GLUEBALLS; GLUONS; LUMINOSITY; MASS; PARTICLE DECAY; QUANTUM CHROMODYNAMICS; SCALAR MESONS; VECTOR MESONS; VEPP-2
- Descriptors DEC
- BOSONS; COLLISIONS; DECAY; ELECTRON COLLISIONS; ELEMENTARY PARTICLES; ENERGY RANGE; FIELD THEORIES; GEV RANGE; HADRONS; MESONS; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; POSTULATED PARTICLES; QUANTUM FIELD THEORY; SCALAR MESONS; STORAGE RINGS
Optional Information
- Copyright
- Copyright (c) 2001 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.