TY  - JOUR
A1  - Adamová, Dagmar
A1  - Agakishiev, Geydar
A1  - Antończyk, Dariusz
A1  - Appelshäuser, Harald
A1  - Belaga, Victoria Vladimirovna
A1  - Bielčíková, Jana
A1  - Braun-Munzinger, Peter
A1  - Busch, Oliver
A1  - Cherlin, Alexander
A1  - Damjanović, Sanja
A1  - Dietel, Thomas
A1  - Dietrich, Lars
A1  - Drees, Axel
A1  - Dubitzky, Wilrid
A1  - Esumi, ShinIchi
A1  - Filimonov, Kirill
A1  - Fomenko, Kirill
A1  - Fraenkel, Zeev
A1  - Garabatos, Chilo
A1  - Glässel, Peter
A1  - Holeczek, Jacek
A1  - Kushpil, Vasilii V.
A1  - Maas, Axel Torsten
A1  - Marín, Ana
A1  - Milošević, Jovan
A1  - Milov, Alexander
A1  - Miśkowiec, Dariusz Czesław
A1  - Panebrattsev, Yuri
A1  - Petchenova, Olga
A1  - Petráček, Vojtech
A1  - Pfeiffer, Andreas
A1  - Rak, Jan
A1  - Ravinovich, Ilia
A1  - Rehak, Pavel
A1  - Sako, Hiroyuki
A1  - Schmitz, Wolfgang
A1  - Sedykh, Sergei
A1  - Shimansky, Sepan
A1  - Stachel, Johanna
A1  - Šumbera, Michal
A1  - Tilsner, Heinz
A1  - Tserruya, Itzhak
A1  - Wessels, Johannes P.
A1  - Wienold, Thomas
A1  - Wurm, Johann Peter
A1  - Xie, Wei
A1  - Yurevich, Sergey
A1  - Yurevich, Vladimir
T1  - Modification of the ρ meson detected by low-mass electron–positron pairs in central Pb-Au collisions at 158A GeV/c
T2  - Physics Letters B
N2  - We present a measurement of e+e− pair production in central PbAu collisions at 158A GeV/c. As reported earlier, a significant excess of the e+e− pair yield over the expectation from hadron decays is observed. The improved mass resolution of the present data set, recorded with the upgraded CERES experiment at the CERN-SPS, allows for a comparison of the data with different theoretical approaches. The data clearly favor a substantial in-medium broadening of the ρ spectral function over a density-dependent shift of the ρ pole mass. The in-medium broadening model implies that baryon induced interactions are the key mechanism to the observed modifications of the ρ meson at SPS energy.
Y1  - 2008
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/76625
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-766250
SN  - 0370-2693
VL  - 666
IS  - 5
SP  - 425
EP  - 429
PB  - Elsevier
CY  - Amsterdam
ER  -