Low-mass lepton pair production in Pb-Au collisions at 40 A.GeV
The CERES/NA45 experiment at the CERN SPS has previously measurede + e - pair production in 160 A.GeV Pb-Au collisions. In the mass regionm > 02 GeV/c2, an enhancement of 2.7±04(stat.)±0.5(syst.) compared to the expectation from known hadronic decay sources was observed. In the 40 A.GeV data take...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2003
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| In: |
Pramāna
Year: 2003, Jahrgang: 60, Heft: 5, Pages: 1067-1072 |
| ISSN: | 0973-7111 |
| DOI: | 10.1007/BF02707032 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1007/BF02707032 Verlag, kostenfrei, Volltext: https://link.springer.com/article/10.1007/BF02707032 |
| Verfasserangaben: | Sanja Damjanović ́, for the CERES/NA45 Collaboration: 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. Milosević, A. Milov, D. Miśkowiec, Y. Panebrattsev, O. Petchenova, V. Petrácek, 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. Sumbera, H. Tilsner, I. Tserruya, J. P. Wessels, T. Wienold, B. Windelband, J. P. Wurm, W. Xie, S. Yurevich, and V. Yurevich |
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| 245 | 1 | 0 | |a Low-mass lepton pair production in Pb-Au collisions at 40 A.GeV |c Sanja Damjanović ́, for the CERES/NA45 Collaboration: 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. Milosević, A. Milov, D. Miśkowiec, Y. Panebrattsev, O. Petchenova, V. Petrácek, 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. Sumbera, H. Tilsner, I. Tserruya, J. P. Wessels, T. Wienold, B. Windelband, J. P. Wurm, W. Xie, S. Yurevich, and V. Yurevich |
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| 520 | |a The CERES/NA45 experiment at the CERN SPS has previously measurede + e - pair production in 160 A.GeV Pb-Au collisions. In the mass regionm > 02 GeV/c2, an enhancement of 2.7±04(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 50 ±13(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. | ||
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