Publications (5)
Two-Pion Production in Nucleon-Nucleon Collisions and the ABC-Effect - Approaching a Puzzleby exclusive and Kinematically complete Measurements
T. Skorodko, M. Bashkanov, C. Bargholtz +50
The ABC effect - a puzzling low-mass enhancement in the invariant mass spectrum - is known from inclusive measurements of two-pion production in nuclear collisions, where it…
Exclusive Measurements of : the Effect Revisited
M. Bashkanov, D. Bogoslawsky, H. Calén +40
Exclusive measurements of the reactions and have been carried out at GeV at the CELSIUS storage ring using the WASA det…
Evidence for a 'Narrow' Roper Resonance - the Breathing Mode of the Nucleon
H. Clement, T. Skorodko, M. Bashkanov +43
All the time since its discovery the N(1440) baryon state, commonly known as Roper resonance, has been a state with many question marks - despite of its 4-star ranking in the p…
Anisotropy in the pion angular distribution of the reaction pp -> pp pi0 at 400 MeV
P. Thorngren Engblom, S. Negasi Keleta, F. Cappellaro +23
The reaction pp -> pp pi0 was studied with the WASA detector at the CELSIUS storage ring. The center of mass angular distribution of the pi0 was obtained by detection of the gamma…
Measurement of eta meson decays into lepton-antilepton pairs
WASA Collaboration, M. BerÅowski, Chr. Bargholtz +50
A search for rare lepton decays of the eta meson was performed using the WASA detector at CELSIUS. Two candidates for double Dalitz decay eta->e+e-e+e- events are reported with a b…