GROSS AND FINE-STRUCTURE OF PION-PRODUCTION EXCITATION-FUNCTIONS IN P-NUCLEUS AND NUCLEUS-NUCLEUS REACTIONS

Authors
JAKOBSSON B BERG M CARLEN L ELMER R FOKIN A GHETTI R MARTENSSON J NOREN B OSKARSSON A WHITLOW HJ EKSTROM C ERICSSON G ROMANSKI J VANVELDHUIZEN EJ WESTERBERG L JULIEN J SKEPPSTEDT O NYBO K THORSTEINSEN TF AMIRELMI S GUTTORMSEN M LOVHOIDEN G BELLINI V PALAZZOLO F SPERDUTO ML BONDORF JP MISHUSTIN I AVDEICHIKOV V LOZHKIN OV MURIN Y
Citation
B. Jakobsson et al., GROSS AND FINE-STRUCTURE OF PION-PRODUCTION EXCITATION-FUNCTIONS IN P-NUCLEUS AND NUCLEUS-NUCLEUS REACTIONS, Physical review letters, 78(20), 1997, pp. 3828-3831
Citations number
31
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
78
Issue
20
Year of publication
1997
Pages
3828 - 3831
Database
ISI
SICI code
0031-9007(1997)78:20<3828:GAFOPE>2.0.ZU;2-#
Abstract
Slow ramping of the CELSIUS storage ring has been utilized to measure the yield of charged pions in proton and heavy ion induced collisions with continuously varying beam energy. Boltzmann-Uehling-Uhlenbeck pre dictions, including Fermi momenta of nucleons in nuclei, follow the ge neral shape of the p-nucleus excitation functions quite well except fo r a general overestimation of the backward emission. For heavy ion rea ctions the calculated yield also falls off faster with decreasing beam energy than the data. No statistically significant narrow resonances are observed.