TY - JOUR
T1 - Two-meson doorway model of low energy antiproton-proton annihilation
AU - Mundigl, S.
AU - Vacas, M. Vicente
AU - Weise, W.
N1 - Funding Information:
* Work supported in part by German BMFT grant 06 OR 762, and by European Community project SCl-0233-C. ’ Supported by Ministerio de Education y Ciencia (Spain); permanent address: Depto. de Fisica Te6rica, Universidad Valencia, Burjassot, Valencia, Spain.
PY - 1991
Y1 - 1991
N2 - We investigate a semiclassical model for pp̄ annihilation into any number of pions and kaons at antiproton lab momenta plab < 3 GeV/c, based on the hypothesis of two-meson doorway states as intermediate channels in the annihilation process. All relevant selection rules are incorporated. We find that with baryon radii of about 0.6 fm, the energy dependence of partial cross sections in all important annihilation channels can be reproduced successfully. Angular distributions for pp → π+π- and K+K- can also be described, provided one admits a substantial s-wave suppression in this model.
AB - We investigate a semiclassical model for pp̄ annihilation into any number of pions and kaons at antiproton lab momenta plab < 3 GeV/c, based on the hypothesis of two-meson doorway states as intermediate channels in the annihilation process. All relevant selection rules are incorporated. We find that with baryon radii of about 0.6 fm, the energy dependence of partial cross sections in all important annihilation channels can be reproduced successfully. Angular distributions for pp → π+π- and K+K- can also be described, provided one admits a substantial s-wave suppression in this model.
UR - http://www.scopus.com/inward/record.url?scp=0011496146&partnerID=8YFLogxK
U2 - 10.1016/0375-9474(91)90033-3
DO - 10.1016/0375-9474(91)90033-3
M3 - Article
AN - SCOPUS:0011496146
SN - 0375-9474
VL - 523
SP - 499
EP - 516
JO - Nuclear Physics, Section A
JF - Nuclear Physics, Section A
IS - 3-4
ER -