2002/10/02 by WASA collaboration, WASA Collaboration
Biochemistry, Genetics and Molecular Biology · Physics and Astronomy · #Crystallography and Radiation Phenomena #FOS: Physical sciences #Fractal and DNA sequence analysis #Nuclear Experiment (nucl-ex) #Nuclear physics research studies #nucl-ex
paper · pdf · doi:10.48550/arxiv.nucl-ex/0210006
QNP 2002
arxiv created 2002/10/02 · openalex publication_date 2002/10/02 · arxiv updated 2009/12/01 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28
Exclusive measurements of the two-pion production channel p p -> p p pi+ pi- have been carried out near threshold at CELSIUS with the PROMICE/WASA detector. They reveal p p -> p p*(1440) -> p p sigma -> p p (pi+ pi-)I=l=0 as the dominant process at these energies, however, the data exhibit also significant contributions from p*(1440) -> Delta pi -> p (pi+ pi-)I=l=0 . From the observed interference of this routes their relative branching ratio is derived.