Low-mass lepton pair production in Pb-Au collisions at 40 A·GeV

D. Adamová; G. Agakichiev; H. Appelshäuser; V. Belaga; P. Braun-Munzinger; A. Cherlin; S. Damjanović; T. Dietel; L. Dietrich; A. Drees; S. I. Esumi; K. Filimonov; K. Fomenko; Z. Fraenkel; C. Garabatos; P. Glässel; G. Hering; J. Holeczek; V. Kushpil; B. Lenkeit; A. Maas; A. Marín; J. Milošević; A. Milov; D. Miśkowiec; Y. Panebrattsev; O. Petchenova; V. Petráček; A. Pfeiffer; J. Rak; I. Ravinovich; P. Rehak; M. Richter; H. Sako; W. Schmitz; J. Schukraft; S. Sedykh; W. Seipp; S. Shimansky; J. Slívová; H. J. Specht; J. Stachel; M. Šumbera; H. Tilsner; I. Tserruya; J. P. Wessels; T. Wienold; B. Windelband; J. P. Wurm; W. Xie; S. Yurevich; V. Yurevich

doi:10.1007/BF02707032

Low-mass lepton pair production in Pb-Au collisions at 40 A·GeV

D. Adamová
, G. Agakichiev
, H. Appelshäuser
, V. Belaga
, P. Braun-Munzinger
, A. Cherlin
, S. Damjanović
, T. Dietel
, L. Dietrich
, A. Drees
, S. I. Esumi
, K. Filimonov
, K. Fomenko
, Z. Fraenkel
, C. Garabatos
, P. Glässel
, G. Hering
, J. Holeczek
, V. Kushpil
, B. Lenkeit

A. Maas, A. Marín, J. Milošević, A. Milov, D. Miśkowiec, Y. Panebrattsev, O. Petchenova, V. Petráček, A. Pfeiffer, J. Rak, I. Ravinovich, P. Rehak, M. Richter, H. Sako, W. Schmitz, J. Schukraft, S. Sedykh, W. Seipp, S. Shimansky, J. Slívová, H. J. Specht, J. Stachel, M. Šumbera, H. Tilsner, I. Tserruya, J. P. Wessels, T. Wienold, B. Windelband, J. P. Wurm, W. Xie, S. Yurevich, V. Yurevich

Physics and Astronomy

Czech Academy of Sciences
GSI Helmholtz Centre for Heavy Ion Research
Heidelberg University
Joint Institute for Nuclear Research
Weizmann Institute of Science
Lawrence Berkeley National Laboratory
CERN
Brookhaven National Laboratory
Max Planck Institute for Nuclear Physics

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

The CERES/NA45 experiment at the CERN SPS has previously measured e⁺e^- pair production in 160 A·GeV Pb-Au collisions. In the mass region m > 0.2 GeV/c², an enhancement of 2.7 ± 0.4(stat.)±0.5(syst.) compared to the expectation from known hadronic decay sources was observed. In the 40 A·GeV data taken in 1999, an enhancement is again found; a preliminary analysis gives an even larger value of 5.0 ± 1.3(stat.). The results are compared to theoretical model calculations based on π⁺ π^- annihilation with a modified ρ-propagator; they may be related to chiral symmetry restoration.

Original language	English
Pages (from-to)	1067-1072
Number of pages	6
Journal	Pramana - Journal of Physics
Volume	60
Issue number	5
DOIs	https://doi.org/10.1007/BF02707032
State	Published - May 2003
Event	Proceedings of the International Conference on Physics and Astrophysics of Quark-Gluon Plasma - Part II - Jaipur, India Duration: Nov 26 2001 → Nov 30 2001

Keywords

Heavy-ion collisions
Lepton pairs

Access to Document

10.1007/BF02707032

Cite this

Adamová, D., Agakichiev, G., Appelshäuser, H., Belaga, V., Braun-Munzinger, P., Cherlin, A., Damjanović, S., Dietel, T., Dietrich, L., Drees, A., Esumi, S. I., Filimonov, K., Fomenko, K., Fraenkel, Z., Garabatos, C., Glässel, P., Hering, G., Holeczek, J., Kushpil, V., ... Yurevich, V. (2003). Low-mass lepton pair production in Pb-Au collisions at 40 A·GeV. Pramana - Journal of Physics, 60(5), 1067-1072. https://doi.org/10.1007/BF02707032

@article{eb98f5c33a914cb78895eeb9e822aef4,

title = "Low-mass lepton pair production in Pb-Au collisions at 40 A·GeV",

abstract = "The CERES/NA45 experiment at the CERN SPS has previously measured e+e- pair production in 160 A·GeV Pb-Au collisions. In the mass region m > 0.2 GeV/c2, an enhancement of 2.7 ± 0.4(stat.)±0.5(syst.) compared to the expectation from known hadronic decay sources was observed. In the 40 A·GeV data taken in 1999, an enhancement is again found; a preliminary analysis gives an even larger value of 5.0 ± 1.3(stat.). The results are compared to theoretical model calculations based on π+ π- annihilation with a modified ρ-propagator; they may be related to chiral symmetry restoration.",

keywords = "Heavy-ion collisions, Lepton pairs",

author = "D. Adamov{\'a} and G. Agakichiev and H. Appelsh{\"a}user and V. Belaga and P. Braun-Munzinger and A. Cherlin and S. Damjanovi{\'c} and T. Dietel and L. Dietrich and A. Drees and Esumi, \{S. I.\} and K. Filimonov and K. Fomenko and Z. Fraenkel and C. Garabatos and P. Gl{\"a}ssel and G. Hering and J. Holeczek and V. Kushpil and B. Lenkeit and A. Maas and A. Mar{\'i}n and J. Milo{\v s}evi{\'c} and A. Milov and D. Mi{\'s}kowiec and Y. Panebrattsev and O. Petchenova and V. Petr{\'a}{\v c}ek and A. Pfeiffer and J. Rak and I. Ravinovich and P. Rehak and M. Richter and H. Sako and W. Schmitz and J. Schukraft and S. Sedykh and W. Seipp and S. Shimansky and J. Sl{\'i}vov{\'a} and Specht, \{H. J.\} and J. Stachel and M. {\v S}umbera and H. Tilsner and I. Tserruya and Wessels, \{J. P.\} and T. Wienold and B. Windelband and Wurm, \{J. P.\} and W. Xie and S. Yurevich and V. Yurevich",

year = "2003",

month = may,

doi = "10.1007/BF02707032",

language = "English",

volume = "60",

pages = "1067--1072",

journal = "Pramana - Journal of Physics",

issn = "0304-4289",

number = "5",

note = "Proceedings of the International Conference on Physics and Astrophysics of Quark-Gluon Plasma - Part II ; Conference date: 26-11-2001 Through 30-11-2001",

}

Adamová, D, Agakichiev, G, Appelshäuser, H, Belaga, V, Braun-Munzinger, P, Cherlin, A, Damjanović, S, Dietel, T, Dietrich, L, Drees, A, Esumi, SI, Filimonov, K, Fomenko, K, Fraenkel, Z, Garabatos, C, Glässel, P, Hering, G, Holeczek, J, Kushpil, V, Lenkeit, B, Maas, A, Marín, A, Milošević, J, Milov, A, Miśkowiec, D, Panebrattsev, Y, Petchenova, O, Petráček, V, Pfeiffer, A, Rak, J, Ravinovich, I, Rehak, P, Richter, M, Sako, H, Schmitz, W, Schukraft, J, Sedykh, S, Seipp, W, Shimansky, S, Slívová, J, Specht, HJ, Stachel, J, Šumbera, M, Tilsner, H, Tserruya, I, Wessels, JP, Wienold, T, Windelband, B, Wurm, JP, Xie, W, Yurevich, S & Yurevich, V 2003, 'Low-mass lepton pair production in Pb-Au collisions at 40 A·GeV', Pramana - Journal of Physics, vol. 60, no. 5, pp. 1067-1072. https://doi.org/10.1007/BF02707032

TY - JOUR

T1 - Low-mass lepton pair production in Pb-Au collisions at 40 A·GeV

AU - Adamová, D.

AU - Agakichiev, G.

AU - Appelshäuser, H.

AU - Belaga, V.

AU - Braun-Munzinger, P.

AU - Cherlin, A.

AU - Damjanović, S.

AU - Dietel, T.

AU - Dietrich, L.

AU - Drees, A.

AU - Esumi, S. I.

AU - Filimonov, K.

AU - Fomenko, K.

AU - Fraenkel, Z.

AU - Garabatos, C.

AU - Glässel, P.

AU - Hering, G.

AU - Holeczek, J.

AU - Kushpil, V.

AU - Lenkeit, B.

AU - Maas, A.

AU - Marín, A.

AU - Milošević, J.

AU - Milov, A.

AU - Miśkowiec, D.

AU - Panebrattsev, Y.

AU - Petchenova, O.

AU - Petráček, V.

AU - Pfeiffer, A.

AU - Rak, J.

AU - Ravinovich, I.

AU - Rehak, P.

AU - Richter, M.

AU - Sako, H.

AU - Schmitz, W.

AU - Schukraft, J.

AU - Sedykh, S.

AU - Seipp, W.

AU - Shimansky, S.

AU - Slívová, J.

AU - Specht, H. J.

AU - Stachel, J.

AU - Šumbera, M.

AU - Tilsner, H.

AU - Tserruya, I.

AU - Wessels, J. P.

AU - Wienold, T.

AU - Windelband, B.

AU - Wurm, J. P.

AU - Xie, W.

AU - Yurevich, S.

AU - Yurevich, V.

PY - 2003/5

Y1 - 2003/5

N2 - The CERES/NA45 experiment at the CERN SPS has previously measured e+e- pair production in 160 A·GeV Pb-Au collisions. In the mass region m > 0.2 GeV/c2, an enhancement of 2.7 ± 0.4(stat.)±0.5(syst.) compared to the expectation from known hadronic decay sources was observed. In the 40 A·GeV data taken in 1999, an enhancement is again found; a preliminary analysis gives an even larger value of 5.0 ± 1.3(stat.). The results are compared to theoretical model calculations based on π+ π- annihilation with a modified ρ-propagator; they may be related to chiral symmetry restoration.

AB - The CERES/NA45 experiment at the CERN SPS has previously measured e+e- pair production in 160 A·GeV Pb-Au collisions. In the mass region m > 0.2 GeV/c2, an enhancement of 2.7 ± 0.4(stat.)±0.5(syst.) compared to the expectation from known hadronic decay sources was observed. In the 40 A·GeV data taken in 1999, an enhancement is again found; a preliminary analysis gives an even larger value of 5.0 ± 1.3(stat.). The results are compared to theoretical model calculations based on π+ π- annihilation with a modified ρ-propagator; they may be related to chiral symmetry restoration.

KW - Heavy-ion collisions

KW - Lepton pairs

UR - https://www.scopus.com/pages/publications/0038619050

U2 - 10.1007/BF02707032

DO - 10.1007/BF02707032

M3 - Conference article

AN - SCOPUS:0038619050

SN - 0304-4289

VL - 60

SP - 1067

EP - 1072

JO - Pramana - Journal of Physics

JF - Pramana - Journal of Physics

IS - 5

T2 - Proceedings of the International Conference on Physics and Astrophysics of Quark-Gluon Plasma - Part II

Y2 - 26 November 2001 through 30 November 2001

ER -

Low-mass lepton pair production in Pb-Au collisions at 40 A·GeV

Abstract

Keywords

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