Low-mass $e^{+}e^{-}$ pair production in 158 A GeV Pb - Au collisions at the CERN SPS, its dependence on multiplicity and transverse momentum

We report a measurement of low-mass electron pairsobserved in 158 GeV/nucleon Pb-Au collisions. The pair yield integrated over the range of invariant masses 0.2 < m < 2.0 GeV is enhanced by a factor of 3.5 +/- 0.4 (stat) +/- 0.9 (syst) over the expectation from neutral meson decays. As observe...

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Detalles Bibliográficos
Autores principales: Agakichiev, G., Baur, R., Braun-Munzinger, P., Ceretto, F., Drees, A., Esumi, S., Faschingbauer, U., Fraenkel, Z., Fuchs, Ch., Gatti, E., Glässel, P., de los Heros, C.P., Holl, P., Jung, Ch., Lenkeit, B., Messer, M., Panebrattsev, Y., Pfeiffer, A., Rak, J., Ravinovich, I., Razin, S., Rehak, P., Richter, M., Sampietro, M., Saveljic, N., Schukraft, J., Shimansky, S., Seipp, W., Socol, E., Specht, H.J., Stachel, J., Tel-Zur, G., Tserruya, I., Ullrich, T., Voigt, C., Weber, C., Wessels, J.P., Wienold, T., Wurm, J.P., Yurevich, V.
Lenguaje:eng
Publicado: 1998
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(98)00083-5
http://cds.cern.ch/record/362780

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