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Title: Charged-Particle Multiplicity near Midrapidity in Central Au+Au Collisions at

Abstract

We present the first measurement of pseudorapidity densities of primary charged particles near midrapidity in Au+Au collisions at s{sub NN}=56 and 130 GeV . For the most central collisions, we find the charged-particle pseudorapidity density to be dN/d{eta}|{sub |{eta}|<1}= 408{+-}12(stat){+-}30(syst ) at 56 GeV and 555{+-}12(stat){+-}35(syst ) at 130 GeV , values that are higher than any previously observed in nuclear collisions. Compared to proton-antiproton collisions, our data show an increase in the pseudorapidity density per participant by more than 40% at the higher energy.

Authors:
; ; ; ; ; ; ; ; ;  [1]
  1. (and others)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
Sponsoring Org.:
(US)
OSTI Identifier:
40205863
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 85; Journal Issue: 15; Other Information: DOI: 10.1103/PhysRevLett.85.3100; Othernumber: PRLTAO000085000015003100000001; 044040PRL; PBD: 9 Oct 2000; Journal ID: ISSN 0031-9007
Publisher:
The American Physical Society
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CHARGED PARTICLES; MULTIPLICITY; COLLISIONS

Citation Formats

Back, B. B., Baker, M. D., Barton, D. S., Basilev, S., Bates, B. D., Baum, R., Betts, R. R., Bialas, A., Bindel, R., and Bogucki, W. Charged-Particle Multiplicity near Midrapidity in Central Au+Au Collisions at. United States: N. p., 2000. Web. doi:10.1103/PhysRevLett.85.3100.
Back, B. B., Baker, M. D., Barton, D. S., Basilev, S., Bates, B. D., Baum, R., Betts, R. R., Bialas, A., Bindel, R., & Bogucki, W. Charged-Particle Multiplicity near Midrapidity in Central Au+Au Collisions at. United States. doi:10.1103/PhysRevLett.85.3100.
Back, B. B., Baker, M. D., Barton, D. S., Basilev, S., Bates, B. D., Baum, R., Betts, R. R., Bialas, A., Bindel, R., and Bogucki, W. Mon . "Charged-Particle Multiplicity near Midrapidity in Central Au+Au Collisions at". United States. doi:10.1103/PhysRevLett.85.3100.
@article{osti_40205863,
title = {Charged-Particle Multiplicity near Midrapidity in Central Au+Au Collisions at},
author = {Back, B. B. and Baker, M. D. and Barton, D. S. and Basilev, S. and Bates, B. D. and Baum, R. and Betts, R. R. and Bialas, A. and Bindel, R. and Bogucki, W.},
abstractNote = {We present the first measurement of pseudorapidity densities of primary charged particles near midrapidity in Au+Au collisions at s{sub NN}=56 and 130 GeV . For the most central collisions, we find the charged-particle pseudorapidity density to be dN/d{eta}|{sub |{eta}|<1}= 408{+-}12(stat){+-}30(syst ) at 56 GeV and 555{+-}12(stat){+-}35(syst ) at 130 GeV , values that are higher than any previously observed in nuclear collisions. Compared to proton-antiproton collisions, our data show an increase in the pseudorapidity density per participant by more than 40% at the higher energy.},
doi = {10.1103/PhysRevLett.85.3100},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 15,
volume = 85,
place = {United States},
year = {2000},
month = {10}
}