Kaon production and kaon to pion ratio in Au+Au collisions at {radical}{ovr s}{sub NN}=130 GeV.

Journal Article · Thu Aug 12 04:00:00 EDT 2004 · Phys. Lett. B

DOI:https://doi.org/10.1016/j.physletb.2004.06.044· OSTI ID:961304

Adler, C; Ahammed, Z; Allgower, C; Amonett, J; Anderson, B D; Cadman, R V; Krueger, K; Spinka, H M; Underwood, D G

Mid-rapidity transverse mass spectra and multiplicity densities of charged and neutral kaons are reported for Au+Au collisions at {radical}{ovr S{sub NN}}=130 GeV at RHIC. The spectra are exponential in transverse mass, with an inverse slope of about 280 MeV in central collisions. The multiplicity densities for these particles scale with the negative hadron pesudo-rapidity density. The charged kaon to pion ratios are K{sup +}/{Pi}{sup -}=0.161{+-}0.002(stat){+-}0.024(syst) and K{sup -}/{Pi}{sup -}=0.146{+-}0.002(stat){+-}0.022(syst) for the most central collisions. The K{sup +}/{Pi}{sup -} ratio is lower than the same ratio observed at the SPS while the K{sup -}/{Pi}{sup -} is higher than the SPS result. The ratios are enhanced by about 50% relative to p+p and {anti p}+p collision data at similar energies.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 961304
• Report Number(s): ANL/HEP/JA-46397
• Journal Information: Phys. Lett. B, Journal Name: Phys. Lett. B Journal Issue: Aug. 12, 2004 Vol. 595; ISSN PYLBAJ; ISSN 0370-2693
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

43 PARTICLE ACCELERATORS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BROOKHAVEN RHIC
CHARGED PARTICLES
COLLISIONS
DENSITY
HADRONS
ION COLLISIONS
KAONS
KAONS NEUTRAL
MASS
MASS SPECTRA
MULTIPLICITY
PARTICLE PRODUCTION
PARTICLE RAPIDITY
PARTICLES
PIONS
PRODUCTION
RELATIVISTIC RANGE
SPECTRA