TY - JOUR A1 - Wolf, Kevin L. A1 - Gutbrod, Hans Herbert A1 - Meyer, W. G. A1 - Poskanzer, Arthur M. A1 - Sandoval, Andres A1 - Stock, Reinhard A1 - Gosset, Jean A1 - King, Chuck A1 - King, George A1 - Sen, Nguyen Van A1 - Westfall, Gary D. T1 - Pion production in the 40Ar+40Ca reaction at 1.05 GeV/nucleon T2 - Physical Review Letters N2 - Pion-production cross sections have been measured for the reaction 40Ar+40Ca--> pi ++X at a laboratory energy of 1.05 GeV/nucleon. A maximum in the pi + cross section occurs at mid-rapidity, which is anomalous relative to p+p and p+nucleus reactions and compared to many other heavy-ion reactions. Calculations based on cascade and thermal models fail to fit the data. Y1 - 2005 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3947 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30-15571 VL - 42 IS - 22 SP - 1448 EP - 1451 ER -