TY  - JOUR
A1  - Schuldes, Heidi
T1  - Strangeness production in Au(1.23A GeV)+Au collisions
T2  - Nuclear Physics A
N2  - We present first data on centrality dependent K+, K− and ϕ production in Au+Au collisions at a kinetic beam energy of 1.23A GeV measured with HADES. We observe no significant increase of the K+/K− and ϕ/K− multiplicity ratios with centrality of the collision. The measured ϕ/K− ratio is found to be larger than results at higher energies. The significant ϕ feed-down contribution to the K− yield substantially softens the measured transverse mass spectrum of K−, explaining its lower observed effective temperature in comparison to the one of K+.
KW  - strangeness
KW  - sub-threshold
KW  - centrality dependence
KW  - Kaons
KW  - φ feed-down
KW  - effective temperature
Y1  - 2017
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/77340
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-773406
SN  - 0375-9474
VL  - 967
SP  - 804
EP  - 807
PB  - Elsevier
CY  - Amsterdam
ER  -