Adler, C;
Ahammed, Z;
Allgower, C;
Amonett, J;
Anderson, BD;
Anderson, M;
Averichev, GS;
... STAR Collaboration, .; + view all
(2002)
Midrapidity Lambda and (Lambda)over-bar production in Au plus Au collisions at root s(NN)=130 GeV.
PHYS REV LETT
, 89
(9)
, Article 092301. 10.1103/PhysRevLett.89.092301.
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Abstract
We report the first measurement of strange (Lambda) and antistrange ((&ULambda;) over bar) baryon production from s(NN)=130 GeV Au+Au collisions at the Relativistic Heavy Ion Collider (RHIC). Rapidity density and transverse mass distributions at midrapidity are presented as a function of centrality. The yield of Lambda and (&ULambda;) over bar hyperons is found to be approximately proportional to the number of negative hadrons. The production of (&ULambda;) over bar hyperons relative to negative hadrons increases very rapidly with transverse momentum. The magnitude of the increase cannot be described by existing hadronic string fragmentation models alone.
| Type: | Article |
|---|---|
| Title: | Midrapidity Lambda and (Lambda)over-bar production in Au plus Au collisions at root s(NN)=130 GeV |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.89.092301 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.89.092301 |
| Language: | English |
| Keywords: | HEAVY-ION COLLISIONS, QUARK-GLUON PLASMA, CHARGED-PARTICLE MULTIPLICITY, ENERGY NUCLEAR COLLISIONS, FREEZE-OUT, BARYON PRODUCTION, PB COLLISIONS, STRANGENESS, DEPENDENCE, EXPANSION |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1324841 |
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