Deuteron production in central Pb plus Pb collisions at 158A GeV

被引：29

作者：

Afanasiev, SV ^{[1
]}

Anticic, T

Bächler, J

Barna, D

Barnby, LS

Bartke, J

Barton, RA

Betev, L

Bialkowska, H

Billmeier, A

Blume, C

Blyth, CO

Boimska, B

Bracinik, J

Brady, FP

Brun, R

Buncic, P

Carr, L

Cebra, D

Cooper, GE

Cramer, JG

Csató, P

Eckardt, V

Eckhardt, F

Ferenc, D

Fischer, HG

Fodor, Z

Foka, P

Freund, P

Friese, V

Ftacnik, J

Gál, J

Ganz, R

Gazdzicki, M

Gladysz, E

Grebieszkow, J

Harris, JW

Hegyi, S

Hlinka, V

Höhne, C

Igo, G

Ivanov, M

Jacobs, P

Janik, R

Jones, PG

Kadija, K

Kolesnikov, VI

Kowalski, M

Lasiuk, B

Lévai, P

机构：

[1] Joint Inst Nucl Res, Dubna, Russia

[2] Univ Athens, Dept Phys, Athens, Greece

[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[4] Univ Birmingham, Birmingham, W Midlands, England

[5] Slovak Acad Sci, Inst Phys, Bratislava, Slovakia

[6] KFKI Res Inst Particle & Nucl Phys, Budapest, Hungary

[7] CERN, Geneva, Switzerland

[8] Inst Nucl Phys, Krakow, Poland

[9] Gesell Schwerionenforsch mbH, Darmstadt, Germany

[10] Univ Calif Davis, Davis, CA 95616 USA

[11] Goethe Univ Frankfurt, Fachbereich Phys, D-6000 Frankfurt, Germany

[12] Univ Houston, Houston, TX USA

[13] Kent State Univ, Kent, OH 44242 USA

[14] Univ Calif Los Angeles, Los Angeles, CA USA

[15] Univ Marburg, Fachbereich Phys, D-3550 Marburg, Germany

[16] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[17] Inst Nucl Studies, PL-00681 Warsaw, Poland

[18] Univ Warsaw, Inst Expt Phys, Warsaw, Poland

[19] Univ Washington, Nucl Phys Lab, Seattle, WA 98195 USA

[20] Yale Univ, New Haven, CT USA

[21] Rudjer Boskovic Inst, Zagreb, Croatia

来源：

PHYSICS LETTERS B | 2000年 / 486卷 / 1-2期

基金：

匈牙利科学研究基金会; 英国工程与自然科学研究理事会; 美国国家科学基金会;

关键词：

D O I：

10.1016/S0370-2693(00)00746-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Experimental results on deuteron emission from central Pb + Pb collisions (E-beam = 158A GeV, fixed target), obtained by NA49 at the CERN SPS accelerator, are presented. The transverse mass in, distribution was measured near mid-rapidity (2.0 < y < 2.5) in the range of 0 < m(t) - m(0) < 0.9 GeV/c(2) (0 < p(t) < 2.0 GeV/c) for the 4% most central collisions. An exponential fit gives an inverse slope T-d = (450 +/- 30) MeV and a yield dN(d)/dy = 0.34 +/- 0.03. The coalescence factor B-2 (m(t) = m(0))=(3.5 +/- 1.0) . 10(-4) GeV2 and its m(t)-dependence are deter-mined and discussed in terms of a model that includes the collective expansion of the source created in a collision. The derived Gaussian size parameter R-G Of the emission volume is consistent with earlier HBT results on the source of pion emission. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：22 / 28

页数：7

共 49 条

[11] PRODUCTION OF D, T, HE-3, D, T AND HE-3 BY 200 GEV PROTONS [J].