Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-12-10
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages, 2 figures. Talk given at 7th International Conference on Hadron Spectroscopy (Hadron 97), Upton, NY, 25-30 Aug 1997
Scientific paper
10.1063/1.56061
The scalar-isoscalar pi-pi phase shifts are calculated in the pi-pi energy range from 600 MeV to 1600 MeV. We use results of the CERN-Cracow-Munich collaboration for the reaction pi^- p --> pi^+ pi^- n on a transversely polarized target at 17.2 GeV/c pi^- momentum. Energy-independent separation of the S-wave pseudoscalar amplitude (pi exchange) from the pseudovector amplitude (a_1 exchange) is carried out. Below the KK threshold we find two solutions for the pi-pi phase shifts, for which the phases increase slower with the effective pi-pi mass than the P-wave phases ("flat" solutions) and two solutions for which the phases increase faster than the P-wave phases ("steep" solutions). Above 1420 MeV both sets of phase shifts increase with energy faster than in the experiment on an unpolarized target. This fact can be related to a presence of the scalar resonance f_0(1500).
Kaminski Robert
Lesniak Leonard
Rybicki Kacper
No associations
LandOfFree
New Solutions for Scalar-Isoscalar pi-pi Phase Shifts does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with New Solutions for Scalar-Isoscalar pi-pi Phase Shifts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and New Solutions for Scalar-Isoscalar pi-pi Phase Shifts will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-527308