Resonance Production and Decay in Proton and Pion Induced Collisions with HADES
Result description
Resonance production and decay in proton-proton collisions at kinetic beam energies of 1.25 GeV and 3.5 GeV as well as r-p reactions at four different pion beam momenta (0.656, 0.69, 0.748 and 0,8 GeV/c) are investigated,lxclusive channels with one pion in the final state (ipm and pp71-1) in the pp collisions were put to extended studies based on various observables in the framework of a one pion exchange model and with solutions obtained within the framework of a partial wave analysis (PWA) of the Bonn-Gatchina group. In the case of the 3.5 GeV data, the study of the ppe+ e- channel gave insight on the dielectron production from 1f'' and A in the second and third resonance regions. We show that the measured dielectron invariant mass distribution cannot be explained by a point like resonance-y* coupling. Comparison with various transport models unravels the ambiguities of the descriptions and the important role of the intermediate p production. To tackle this problem a systematic investigation focused on the role of N(1520) production and decay in pion induced reactions on polyethylene and carbon targets,lirst results on exclusive channels with one pion (7-p), two pions (n7-'7-) and dileptons (ne(+)e(-)) in the final state are presented.
Keywords
The result's identifiers
Result code in IS VaVaI
Result on the web
DOI - Digital Object Identifier
Alternative languages
Result language
angličtina
Original language name
Resonance Production and Decay in Proton and Pion Induced Collisions with HADES
Original language description
Resonance production and decay in proton-proton collisions at kinetic beam energies of 1.25 GeV and 3.5 GeV as well as r-p reactions at four different pion beam momenta (0.656, 0.69, 0.748 and 0,8 GeV/c) are investigated,lxclusive channels with one pion in the final state (ipm and pp71-1) in the pp collisions were put to extended studies based on various observables in the framework of a one pion exchange model and with solutions obtained within the framework of a partial wave analysis (PWA) of the Bonn-Gatchina group. In the case of the 3.5 GeV data, the study of the ppe+ e- channel gave insight on the dielectron production from 1f'' and A in the second and third resonance regions. We show that the measured dielectron invariant mass distribution cannot be explained by a point like resonance-y* coupling. Comparison with various transport models unravels the ambiguities of the descriptions and the important role of the intermediate p production. To tackle this problem a systematic investigation focused on the role of N(1520) production and decay in pion induced reactions on polyethylene and carbon targets,lirst results on exclusive channels with one pion (7-p), two pions (n7-'7-) and dileptons (ne(+)e(-)) in the final state are presented.
Czech name
—
Czech description
—
Classification
Type
D - Article in proceedings
CEP classification
—
OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
—
Continuities
—
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
JPS Conference Proceedings
ISBN
978-4-89027-114-6
ISSN
—
e-ISSN
—
Number of pages
11
Pages from-to
010013
Publisher name
The Physical Society of Japan
Place of publication
Tokyo
Event location
Osaka
Event date
May 25, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000466767000013
Basic information
Result type
D - Article in proceedings
OECD FORD
Particles and field physics
Year of implementation
2016