Published January 2009
| Version v1
Journal article
Study of the dp → pppπ- Reaction Near the η Production Threshold
- 1. M. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Cracow (Poland)
- 2. Institute for Nuclear Physics and Juelich Center for Hadron Physics, Research Center Juelich, 52425 Juelich (Germany)
Description
Excitation function as well as differential distributions for dp → pppπ- reaction have been measured near the η production threshold in a search for a signal from decays of 3He - η bound state. We observe an enhancement in the excitation function above the η threshold. Calculation of the counting rate corresponding to the production of η mesons in the reaction dp → 3Heη and their subsequent absorption on neutron in the 3He nucleus underestimates the observed enhancement by one order of magnitude. Also the differential distributions determined for the outgoing particles contradict the η absorption scenario. (author)
Availability note (English)
Also available at http://th-www.if.uj.edu.pl/acta/sup2/t1.htmAdditional details
Additional titles
- Augmented title (English)
- PACS numbers: 14.40.Aq, 21.85.+d, 25.45.-z
Identifiers
Publishing Information
- Journal Title
- Acta Physica Polonica. Series B, Proceedings Supplement
- Journal Volume
- 2
- Journal Issue
- 1
- Journal Page Range
- p. 133-140
- ISSN
- 1899-2358
Conference
- Title
- Symposium on Meson Physics, Extended COSY-11 Collaboration Meeting
- Dates
- 1-4 Oct 2008
- Place
- Cracow (Poland)
INIS
- Country of Publication
- Poland
- Country of Input or Organization
- Poland
- INIS RN
- 41036782
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- BOUND STATE; COSY STORAGE RING; DATA ANALYSIS; DEUTERIUM TARGET; ETA MESONS; EXCITATION FUNCTIONS; FINAL-STATE INTERACTIONS; HELIUM 3; PIONS MINUS; PROTON REACTIONS; PROTONS
- Descriptors DEC
- ACCELERATORS; BARYON REACTIONS; BARYONS; BOSONS; CHARGED-PARTICLE REACTIONS; CROSS SECTIONS; CYCLIC ACCELERATORS; DIFFERENTIAL CROSS SECTIONS; ELEMENTARY PARTICLES; EVEN-ODD NUCLEI; FERMIONS; FUNCTIONS; HADRON REACTIONS; HADRONS; HELIUM ISOTOPES; INTERACTIONS; ISOTOPES; LIGHT NUCLEI; MESONS; NUCLEAR REACTIONS; NUCLEI; NUCLEON REACTIONS; NUCLEONS; PIONS; PSEUDOSCALAR MESONS; STABLE ISOTOPES; STORAGE RINGS; SYNCHROTRONS; TARGETS
Optional Information
- Contract/Grant/Project number
- FP6 Program RII3-CT-2004-506078; Grant 3240/H03/2006/31; Grant 1202/DFG/2007/03; FFE Grant
- Notes
- 12 refs., 6 figs.
- Collaborations
- COSY-11 Collaboration
- Funding organization
- European Community (European Commission (EC)); German Research Foundation (Germany); Ministry of Science and Higher Education (Poland); Research Center Juelich (Germany)