Published June 15, 2009
| Version v1
Journal article
Measurement of the η→3π0 Dalitz plot distribution with the WASA detector at COSY
Creators
- 1. Physikalisches Institut, Universitaet Erlangen-Nuernberg, Erwin-Rommel-Str. 1, 91058 Erlangen (Germany)
- 2. Juelich Center for Hadron Physics, Forschungszentrum Juelich, 52425 Juelich (Germany)
- 3. Institut fuer Kernphysik, Forschungszentrum Juelich, 52425 Juelich (Germany)
- 4. Physikalisches Institut der Universitaet Tuebingen, Auf der Morgenstelle 14, 72076 Tuebingen (Germany)
- 5. Few Body System Laboratory, High Energy Physics Division, St. Petersburg Nuclear Physics Institute, Orlova Rosha 2, 188300 Gatchina (Russian Federation)
- 6. High Energy Physics Department, The Andrzej Soltan Institute for Nuclear Studies, ul. Hoza 69, 00-681, Warsaw (Poland)
- 7. Department of Physics, Indian Institute of Technology Bombay, Powai, Mumbai, 400076 Maharashtra (India)
- 8. Helmholtz-Institut fuer Strahlen- und Kernphysik, Rheinische Friedrich-Wilhelms-Universitaet Bonn, Nussallee 14-16, 53115 Bonn (Germany)
- 9. Budker Institute of Nuclear Physics, akademika Lavrentieva prospect 11, 630090 Novosibirsk (Russian Federation)
- 10. Division of Nuclear and Particle Physics, Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala (Sweden)
Description
In the first production run of the WASA experiment at COSY, the eta decay into three neutral pions was measured in proton-proton interactions at a proton beam kinetic energy of 1.4 GeV. The Dalitz plot of the three pions was studied using 1.2x105 fully reconstructed events, and the quadratic slope parameter α was determined to be -0.027±0.008(stat)±0.005(syst). The result is consistent with previous measurements and further corroborates the importance of pion-pion final state interactions.
Availability note (English)
Available from http://dx.doi.org/10.1016/j.physletb.2009.03.063Additional details
Identifiers
- DOI
- 10.1016/j.physletb.2009.03.063;
- arXiv
- arXiv:0811.2763v1;
- PII
- S0370-2693(09)00360-8;
Publishing Information
- Journal Title
- Physics Letters. Section B
- Journal Volume
- 677
- Journal Issue
- 1-2
- Journal Page Range
- p. 24-29
- ISSN
- 0370-2693
- CODEN
- PYLBAJ
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 41055339
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- COSY STORAGE RING; DALITZ PLOT; ETA MESONS; FINAL-STATE INTERACTIONS; GEV RANGE; KINETIC ENERGY; PARTICLE DECAY; PIONS NEUTRAL; PROTON BEAMS; PROTON-PROTON INTERACTIONS
- Descriptors DEC
- ACCELERATORS; BARYON-BARYON INTERACTIONS; BEAMS; BOSONS; CYCLIC ACCELERATORS; DECAY; DIAGRAMS; ELEMENTARY PARTICLES; ENERGY; ENERGY RANGE; HADRON-HADRON INTERACTIONS; HADRONS; INFORMATION; INTERACTIONS; MESONS; NUCLEON BEAMS; NUCLEON-NUCLEON INTERACTIONS; PARTICLE BEAMS; PARTICLE INTERACTIONS; PIONS; PROTON-NUCLEON INTERACTIONS; PSEUDOSCALAR MESONS; SCATTERPLOTS; STORAGE RINGS; SYNCHROTRONS
Optional Information
- Copyright
- Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.