TY  - JOUR
A1  - Adams, J.
A1  - Adler, Clemens
A1  - Berger, Jens
A1  - Dietel, Thomas
A1  - Flierl, Dominik Bernhard
A1  - Kollegger, Thorsten
A1  - Lange, Jens Sören
A1  - Stock, Reinhard
A1  - Struck, Christof
A1  - al., et
A1  - Collaboration, STAR
T1  - Rho 0 production and possible modification in Au+Au and p+p collisions at sqrt[sNN]=200 GeV
N2  - We report results on rho (770)0--> pi + pi - production at midrapidity in p+p and peripheral Au+Au collisions at sqrt[sNN]=200 GeV. This is the first direct measurement of rho (770)0--> pi + pi - in heavy-ion collisions. The measured rho 0 peak in the invariant mass distribution is shifted by ~40 MeV/c2 in minimum bias p+p interactions and ~70 MeV/c2 in peripheral Au+Au collisions. The rho 0 mass shift is dependent on transverse momentum and multiplicity. The modification of the rho 0 meson mass, width, and shape due to phase space and dynamical effects are discussed.
Y1  - 2004
UR  - http://publikationen.stub.uni-frankfurt.de/frontdoor/index/index/docId/3568
UR  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hebis:30-18994
ER  -