Two-proton correlations from 158 A GeV Pb + Pb central collisions

The two-proton correlation function at midrapidity from Pb+Pb central collisions at 158 AGeV has been measured by the NA49 experiment. The results are compared to model predictions from static thermal Gaussian proton source distributions and transport models RQMD and VENUS. An effective proton sourc...

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Detalles Bibliográficos
Autores principales: Appelshäuser, H., Bächler, J., Bailey, S.J., Barna, D., Barnby, L.S., Bartke, J., Barton, R.A., Betev, L., Białkowska, H., Billmeier, A., Blyth, C.O., Bock, R., Boimska, B., Bormann, C., Brady, F.P., Brockmann, R., Brun, R., Bunčić, P., Caines, H.L., Carr, L.D., Cebra, D., Cooper, G.E., Cramer, J.G., Cristinziani, M., Csato, P., Dunn, J., Eckardt, V., Eckhardt, F., Ferguson, M.I., Fischer, H.G., Flierl, D., Fodor, Z., Foka, P., Freund, P., Friese, V., Fuchs, M., Gabler, F., Gal, J., Ganz, R., Gaździcki, M., Geist, W., Gładysz, E., Grebieszkow, J., Günther, J., Harris, J.W., Hegyi, S., Henkel, T., Hill, L.A., Hümmler, H., Igo, G., Irmscher, D., Jacobs, P., Jones, P.G., Kadija, K., Kolesnikov, V.I., Kowalski, M., Lasiuk, B., Lednicky, R., Lévai, P., Malakhov, A.I., Margetis, S., Markert, C., Melkumov, G.L., Mock, A., Molnár, J., Nelson, J.M., Oldenburg, M., Odyniec, G., Palla, G., Panagiotou, A.D., Petridis, A., Piper, A., Porter, R.J., Poskanzer, A.M., Prindle, D.J., Pühlhofer, F., Susa, T., Reid, J.G., Renfordt, R., Retyk, W., Ritter, H.G., Röhrich, D., Roland, C., Roland, G., Rudolph, H., Rybicki, A., Sammer, T., Sandoval, A., Sann, H., Semenov, A.Yu., Schäfer, E., Schmischke, D., Schmitz, N., Schönfelder, S., Seyboth, P., Sikler, F., Skrzypczak, E., Snellings, R., Squier, G.T.A., Stock, R., Ströbele, H., Struck, Chr., Szentpetery, I., Sziklai, J., Toy, M., Trainor, T.A., Trentalange, S., Ullrich, T., Vassiliou, M., Veres, G., Vesztergombi, G., Voloshin, S., Vranić, D., Wang, F., Weerasundara, D.D., Wenig, S., Whitten, C., Wood, L., Xu, N., Yates, T.A., Zimanyi, J., Zhu, X.-Z., Zybert, R.
Lenguaje:eng
Publicado: 1999
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(99)01152-1
http://cds.cern.ch/record/386660
Descripción
Sumario:The two-proton correlation function at midrapidity from Pb+Pb central collisions at 158 AGeV has been measured by the NA49 experiment. The results are compared to model predictions from static thermal Gaussian proton source distributions and transport models RQMD and VENUS. An effective proton source size is determined by minimizing CHI-square/ndf between the correlation functions of the data and those calculated for the Gaussian sources, yielding 3.85 +- 0.15 (stat.) +- 0.15 (syst.) fm. The RQMD model overpredicts the effective source size, while the VENUS model underpredicts the effective source size.

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