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Charged-particle multiplicity near midrapidity in central Au+Au collisions at sqrt[SNN]=56 and 130 GeV.
- Source :
-
Physical review letters [Phys Rev Lett] 2000 Oct 09; Vol. 85 (15), pp. 3100-4. - Publication Year :
- 2000
-
Abstract
- We present the first measurement of pseudorapidity densities of primary charged particles near midrapidity in Au+Au collisions at sqrt[s(NN)] = 56 and 130 GeV. For the most central collisions, we find the charged-particle pseudorapidity density to be dN/deta|(|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.
Details
- Language :
- English
- ISSN :
- 0031-9007
- Volume :
- 85
- Issue :
- 15
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 11019276
- Full Text :
- https://doi.org/10.1103/PhysRevLett.85.3100