Ερευνητικό υλικό ΕΚΠΑ

Xi and (Xi)over-bar production in 158 GeV/nucleon Pb+Pb collisions

Αγγλικά

We report measurements of Xi(-) and (Xi)over-bar(+) hyperon absolute
yields as a function of rapidity in 158 GeV/c Ph + Pb collisions. At
midrapidity, dN/dy = 2.29 +/- 0 12 for Xi(-), and 0.52 +/- 0.05 for
(Xi)over-bar(+), leading to the ratio of (Xi)over-bar(+)/Xi(-) = 0.23
+/- 0.03. Inverse slope parameters fitted to the measured transverse
mass spectra are of the order of T approximate to 300 MeV near
mid-rapidity. The estimated total yield of Xi(-) particles in Pb+ Pb
central interactions amounts to 7.4 +/- 1.0 per collision. Comparison to
Xi(-) production in properly scaled p + p reactions at the same energy
reveals a dramatic enhancement (about one order of magnitude) of Xi(-)
production in Pb + Pb central collisions over elementary hadron
interactions. (C) 1998 Elsevier Science B.V. All rights reserved.

1998

Appelhauser, H
Bachler, J
Bailey, SJ
Barna, D
Barnby, LS
and Bartke, J
Barton, RA
Bialkowska, H
Billmeier, A and
Blyth, CO
Bock, R
Bormann, C
Brady, FP
Brockmann, R and
Brun, R
Buncic, P
Caines, HL
Carr, LD
Cebra, D and
Cooper, GE
Cramer, JG
Cristinziani, M
Csato, P
Dunn, J
and Eckardt, V
Eckhardt, F
Ferguson, MI
Fischer, HG and
Flierl, D
Fodor, Z
Foka, P
Freund, P
Friese, V and
Fuchs, M
Gabler, F
Ganz, R
Geist, W
Gal, J and
Gazdzicki, M
Gladysz, E
Grebieszkow, J
Gunther, J and
Harris, JW
Hegyi, S
Henkel, T
Hill, LA
Hummler, H and
Igo, G
Irmscher, D
Jacobs, P
Jones, PG
Kadija, K and
Kolesnikov, VI
Konashenok, A
Kowalski, M
Lasiuk, B and
Levai, P
Liu, F
Malakhov, AI
Margetis, S
Markert, C and
Melkumov, GL
Mock, A
Molnar, J
Nelson, JM
Oldenburg, M
and Odyniec, G
Palla, G
Panagiotou, AD
Petridis, A and
Piper, A
Porter, RJ
Poskanzer, AM
Prindle, DJ
Puhlhofer,
F
Rauch, W
Reid, JG
Renfordt, R
Retyk, W
Ritter, HG
and Rohrich, D
Roland, C
Roland, G
Rudolph, H
Rybicki, A
and Sandoval, A
Sann, H
Semenov, AY
Schafer, E and
Schmischke, D
Schmitz, N
Schonfelder, S
Seyboth, P and
Seyerlein, J
Sikler, F
Skrzypczak, E
Snellings, R and
Squier, GTA
Stock, R
Strobele, H
Struck, C
Susa, T and
Szentpetery, I
Sziklai, J
Toy, M
Trainor, TA and
Trentalange, S
Ullrich, T
Vassiliou, M
Veres, G and
Vesztergombi, G
Vranic, D
Wang, F
Weerasundara, DD and
Wenig, S
Whitten, C
Wienold, T
Wood, L
Xu, N
Yates,
TA
Zimanyi, J
Zhu, XZ
Zybert, R
NA49 Collaboration

PHYSICS LETTERS B

ELSEVIER SCIENCE BV

444

3-4

523-530

https://doi.org/10.1016/S0370-2693(98)01399-9

10.1016/S0370-2693(98)01399-9

https://pergamos.lib.uoa.gr/uoa/dl/object/3051168