TY - JOUR
T1 - Neutron-proton charge exchange revisited
AU - Gotsman, E.
AU - Maor, U.
N1 - Funding Information:
The energy spread is even more critical for the analysis of a reaction like np charge exchange (CHEX) which differs from the usual Regge phenomenology in that data on this reaction, with PL < 60 GeV/c shows \[3\]a dominant forward effect of the one pion exchange (OPE) mechanism and its associated corrections \[1,2\].T he persistence of the forward spike over this energy range is due to the nearness of the pion pole singularity, its large coupling and the kinematical constraints to the N-N problem. Thus, the expected suppression of low-lying trajectories does not show itself at the energy range which we are discussing. Indeed, an ISR study \[4\]o f the energy * Work supported in part by the Israel Commission for Basic Research and the United states Bi-National Science Foundation (BSF) Jerusalem.
PY - 1978
Y1 - 1978
N2 - It is shown that a simple Regge parametrization with π, ρ{variant} and A2 t-channel exchanges and their associated cuts account rather well for the I = 1 (t-channel exchange) nucleon-nucleon data available at incoming momenta up to 300 GeV/c. The polarization data on pp → nn at 8 GeV/c may require additional input. Critical comparison with other investigations are presented.
AB - It is shown that a simple Regge parametrization with π, ρ{variant} and A2 t-channel exchanges and their associated cuts account rather well for the I = 1 (t-channel exchange) nucleon-nucleon data available at incoming momenta up to 300 GeV/c. The polarization data on pp → nn at 8 GeV/c may require additional input. Critical comparison with other investigations are presented.
UR - https://www.scopus.com/pages/publications/49349124636
U2 - 10.1016/0550-3213(78)90096-2
DO - 10.1016/0550-3213(78)90096-2
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AN - SCOPUS:49349124636
SN - 0550-3213
VL - 145
SP - 459
EP - 476
JO - Nuclear Physics, Section B
JF - Nuclear Physics, Section B
IS - 2-3
ER -