Dilepton measurements with CERES

We report on dilepton measurements for central Pb on Au collisions at the top CERN SPS energy with the upgraded CERES experiment. The dilepton mass spectrum of 2000 data with improved mass resolution shows an enhancement over the expectation from hadron decays that is well described by a model inclu...

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Detalles Bibliográficos
Autores principales: Marin, A, Adamová, D, Agakichiev, G, Andronic, A, Antonczyk, D, Appelshäuser, H, Bielcíkováe, V, Biel, J, Braun-Munzinger, P, Busch, O, Cherlin, A, Damjanovic, S, Dietel, T, Dietrich, L, Drees, A, Esumi, S I, Filimonov, K, Fomenko, K, Fraenkel, Zeev, Garabatos, C, Glässel, P, Hering, G, Holeczek, J, Kalisky, M, Kniege, S, Kushpil, V, Ludolphs, W, Maas, A, Milosevic, J, Miskowiec, D, Ortega, R, Panebratsev, Yu A, Petchenova, O, Petracek, V, Ploskon, M, Radomski, S, Rak, J, Ravinovich, I, Rehak, P, Sako, H, Schmitz, W, Schuchmann, S, Sedykh, S, Shimansky, S, Soualah, R, Stachel, J, Sumbera, M, Tilsner, H, Tserruya, Itzhak, Tsiledakis, G, Wessels, J P, Wienold, T, Wurm, J P, Yurevich, S, Yurevich, V
Lenguaje:eng
Publicado: 2008
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.22323/1.047.0034
http://cds.cern.ch/record/1090023
_version_ 1780913747552894976
author Marin, A
Adamová, D
Agakichiev, G
Andronic, A
Antonczyk, D
Appelshäuser, H
Bielcíkováe, V
Biel, J
Braun-Munzinger, P
Busch, O
Cherlin, A
Damjanovic, S
Dietel, T
Dietrich, L
Drees, A
Esumi, S I
Filimonov, K
Fomenko, K
Fraenkel, Zeev
Garabatos, C
Glässel, P
Hering, G
Holeczek, J
Kalisky, M
Kniege, S
Kushpil, V
Ludolphs, W
Maas, A
Milosevic, J
Miskowiec, D
Ortega, R
Panebratsev, Yu A
Petchenova, O
Petracek, V
Ploskon, M
Radomski, S
Rak, J
Ravinovich, I
Rehak, P
Sako, H
Schmitz, W
Schuchmann, S
Sedykh, S
Shimansky, S
Soualah, R
Stachel, J
Sumbera, M
Tilsner, H
Tserruya, Itzhak
Tsiledakis, G
Wessels, J P
Wienold, T
Wurm, J P
Yurevich, S
Yurevich, V
author_facet Marin, A
Adamová, D
Agakichiev, G
Andronic, A
Antonczyk, D
Appelshäuser, H
Bielcíkováe, V
Biel, J
Braun-Munzinger, P
Busch, O
Cherlin, A
Damjanovic, S
Dietel, T
Dietrich, L
Drees, A
Esumi, S I
Filimonov, K
Fomenko, K
Fraenkel, Zeev
Garabatos, C
Glässel, P
Hering, G
Holeczek, J
Kalisky, M
Kniege, S
Kushpil, V
Ludolphs, W
Maas, A
Milosevic, J
Miskowiec, D
Ortega, R
Panebratsev, Yu A
Petchenova, O
Petracek, V
Ploskon, M
Radomski, S
Rak, J
Ravinovich, I
Rehak, P
Sako, H
Schmitz, W
Schuchmann, S
Sedykh, S
Shimansky, S
Soualah, R
Stachel, J
Sumbera, M
Tilsner, H
Tserruya, Itzhak
Tsiledakis, G
Wessels, J P
Wienold, T
Wurm, J P
Yurevich, S
Yurevich, V
author_sort Marin, A
collection CERN
description We report on dilepton measurements for central Pb on Au collisions at the top CERN SPS energy with the upgraded CERES experiment. The dilepton mass spectrum of 2000 data with improved mass resolution shows an enhancement over the expectation from hadron decays that is well described by a model including a strong broadening of the $\rho$ spectral function. The measured excess yield excludes the dropping mass scenario. We also report on the $\phi$ meson measured simultaneously both in the $K^+K^-$ and in the dilepton decay channel for the first time in high energy heavy-ion collisions. An excellent agreement is found between the rapidity densities and the shape of the measured tranverse momentum spectrum. The data rule out a possible enhancement of the $\phi$ yield in the leptonic over hadronic channel by a factor larger than 1.6 at 95% CL. CERES results are in agreement with NA49 results.
id cern-1090023
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2008
record_format invenio
spelling cern-10900232019-09-30T06:29:59Zdoi:10.22323/1.047.0034http://cds.cern.ch/record/1090023engMarin, AAdamová, DAgakichiev, GAndronic, AAntonczyk, DAppelshäuser, HBielcíkováe, VBiel, JBraun-Munzinger, PBusch, OCherlin, ADamjanovic, SDietel, TDietrich, LDrees, AEsumi, S IFilimonov, KFomenko, KFraenkel, ZeevGarabatos, CGlässel, PHering, GHoleczek, JKalisky, MKniege, SKushpil, VLudolphs, WMaas, AMilosevic, JMiskowiec, DOrtega, RPanebratsev, Yu APetchenova, OPetracek, VPloskon, MRadomski, SRak, JRavinovich, IRehak, PSako, HSchmitz, WSchuchmann, SSedykh, SShimansky, SSoualah, RStachel, JSumbera, MTilsner, HTserruya, ItzhakTsiledakis, GWessels, J PWienold, TWurm, J PYurevich, SYurevich, VDilepton measurements with CERESNuclear Physics - ExperimentWe report on dilepton measurements for central Pb on Au collisions at the top CERN SPS energy with the upgraded CERES experiment. The dilepton mass spectrum of 2000 data with improved mass resolution shows an enhancement over the expectation from hadron decays that is well described by a model including a strong broadening of the $\rho$ spectral function. The measured excess yield excludes the dropping mass scenario. We also report on the $\phi$ meson measured simultaneously both in the $K^+K^-$ and in the dilepton decay channel for the first time in high energy heavy-ion collisions. An excellent agreement is found between the rapidity densities and the shape of the measured tranverse momentum spectrum. The data rule out a possible enhancement of the $\phi$ yield in the leptonic over hadronic channel by a factor larger than 1.6 at 95% CL. CERES results are in agreement with NA49 results.arXiv:0802.2679oai:cds.cern.ch:10900232008-02-20
spellingShingle Nuclear Physics - Experiment
Marin, A
Adamová, D
Agakichiev, G
Andronic, A
Antonczyk, D
Appelshäuser, H
Bielcíkováe, V
Biel, J
Braun-Munzinger, P
Busch, O
Cherlin, A
Damjanovic, S
Dietel, T
Dietrich, L
Drees, A
Esumi, S I
Filimonov, K
Fomenko, K
Fraenkel, Zeev
Garabatos, C
Glässel, P
Hering, G
Holeczek, J
Kalisky, M
Kniege, S
Kushpil, V
Ludolphs, W
Maas, A
Milosevic, J
Miskowiec, D
Ortega, R
Panebratsev, Yu A
Petchenova, O
Petracek, V
Ploskon, M
Radomski, S
Rak, J
Ravinovich, I
Rehak, P
Sako, H
Schmitz, W
Schuchmann, S
Sedykh, S
Shimansky, S
Soualah, R
Stachel, J
Sumbera, M
Tilsner, H
Tserruya, Itzhak
Tsiledakis, G
Wessels, J P
Wienold, T
Wurm, J P
Yurevich, S
Yurevich, V
Dilepton measurements with CERES
title Dilepton measurements with CERES
title_full Dilepton measurements with CERES
title_fullStr Dilepton measurements with CERES
title_full_unstemmed Dilepton measurements with CERES
title_short Dilepton measurements with CERES
title_sort dilepton measurements with ceres
topic Nuclear Physics - Experiment
url https://dx.doi.org/10.22323/1.047.0034
http://cds.cern.ch/record/1090023
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