TY - JOUR
T1 - Investigation of the pion trajectory in a regge-pole model
AU - Haber, B.
AU - Maor, U.
AU - Yekutieli, G.
AU - Gotsman, E.
N1 - Funding Information:
Research sponsored by Air Force Office of Scientific Research, Office of Aerospace Research, U. S. Air Force, under AFOSR Grant No. AFEOAR 66/39, through the European Office of Aerospace Research.
PY - 1968
Y1 - 1968
N2 - Reactions of π, K, p̄, and p resulting in Δ(1238) production are examined. It is shown that whenever an exchange with P=(-)J+1 is allowed by the known selection rules, this exchange dominates the production mechanism at small momentum transfers. This phenomenon is described in terms of a Regge-pole model for pion exchange. Arguments are given to show that although the pion trajectory is lower than the ρ and A2 trajectories, π exchange can dominate at small |t| values. The pion trajectory is determined from the experimental data, and fits for the differential cross sections at various energies are given for |t|≤0.25 (GeV/c)2.
AB - Reactions of π, K, p̄, and p resulting in Δ(1238) production are examined. It is shown that whenever an exchange with P=(-)J+1 is allowed by the known selection rules, this exchange dominates the production mechanism at small momentum transfers. This phenomenon is described in terms of a Regge-pole model for pion exchange. Arguments are given to show that although the pion trajectory is lower than the ρ and A2 trajectories, π exchange can dominate at small |t| values. The pion trajectory is determined from the experimental data, and fits for the differential cross sections at various energies are given for |t|≤0.25 (GeV/c)2.
UR - http://www.scopus.com/inward/record.url?scp=36049057007&partnerID=8YFLogxK
U2 - 10.1103/PhysRev.168.1773
DO - 10.1103/PhysRev.168.1773
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AN - SCOPUS:36049057007
SN - 0031-899X
VL - 168
SP - 1773
EP - 1779
JO - Physical Review
JF - Physical Review
IS - 5
ER -