Transverse momentum distributions of neutral pions from nuclear collisions at 200 AGeV

New results on transverse mass spectra of neutral pions measured at central rapidity are presented for impact parameter selected 200 AGeV S + S and S + Au collisions. The spectra from all systems show a clear power-law like shape with similar curvature. Collisions of S + Au exhibit a larger mean tra...

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Detalles Bibliográficos
Autores principales: Albrecht, R., Antonenko, V., Awes, T.C., Barlag, C., Bloomer, M., Blume, C., Bock, D., Bock, R., Bohne, E.M., Bucher, D., Claussen, A., Clewing, G., Eklund, A., Fokin, S., Franz, A., Garpman, S., Geurts, F., Glasow, R., Gustafsson, H.A., Gutbrod, H.H., Holker, G., Idh, J., Ippolitov, M., Jacobs, P., Kamermans, R., Kampert, K.H., Karadzhev, K., Kolb, B.W., Lebedev, A., Lohner, H., Lund, I., Manko, V., Nikolaev, S., Obenshain, F.E., Oskarsson, A., Otterlund, I., Peitzmann, T., Plasil, F., Poskanzer, Arthur M., Purschke, M., Ritter, H.G., Saini, S., Santo, R., Schmidt, H.R., Soderstrom, K., Sorensen, S.P., Stankus, P.W., Steffens, K., Steinhauser, P., Stenlund, E., Stuken, D., Twenhofel, C., Vinogradov, A., Young, G.R.
Lenguaje:eng
Publicado: 1998
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1007/s100520050267
http://cds.cern.ch/record/355135
Descripción
Sumario:New results on transverse mass spectra of neutral pions measured at central rapidity are presented for impact parameter selected 200 AGeV S + S and S + Au collisions. The spectra from all systems show a clear power-law like shape with similar curvature. Collisions of S + Au exhibit a larger mean transverse momentum than pp increasing with centrality. Predictions of string models and by hydrodynamic approaches including collective expansion and decays of short lived resonances are compared to the data and the implications are discussed.

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