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

Abstract

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.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
961304
Report Number(s):
ANL/HEP/JA-46397
Journal ID: ISSN 0370-2693; PYLBAJ; TRN: US1003438
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Phys. Lett. B
Additional Journal Information:
Journal Volume: 595; Journal Issue: Aug. 12, 2004; Journal ID: ISSN 0370-2693
Country of Publication:
United States
Language:
ENGLISH
Subject:
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

Citation Formats

Adler, C., Ahammed, Z., Allgower, C., Amonett, J., Anderson, B. D., Cadman, R. V., Krueger, K., Spinka, H. M., Underwood, D. G., STAR Collaboration, High Energy Physics, Univ. of Frankfurt, Purdue Univ., Indiana Univ., and Kent State Univ.. Kaon production and kaon to pion ratio in Au+Au collisions at {radical}{ovr s}{sub NN}=130 GeV.. United States: N. p., 2004. Web. doi:10.1016/j.physletb.2004.06.044.
Adler, C., Ahammed, Z., Allgower, C., Amonett, J., Anderson, B. D., Cadman, R. V., Krueger, K., Spinka, H. M., Underwood, D. G., STAR Collaboration, High Energy Physics, Univ. of Frankfurt, Purdue Univ., Indiana Univ., & Kent State Univ.. Kaon production and kaon to pion ratio in Au+Au collisions at {radical}{ovr s}{sub NN}=130 GeV.. United States. doi:10.1016/j.physletb.2004.06.044.
Adler, C., Ahammed, Z., Allgower, C., Amonett, J., Anderson, B. D., Cadman, R. V., Krueger, K., Spinka, H. M., Underwood, D. G., STAR Collaboration, High Energy Physics, Univ. of Frankfurt, Purdue Univ., Indiana Univ., and Kent State Univ.. Thu . "Kaon production and kaon to pion ratio in Au+Au collisions at {radical}{ovr s}{sub NN}=130 GeV.". United States. doi:10.1016/j.physletb.2004.06.044.
@article{osti_961304,
title = {Kaon production and kaon to pion ratio in Au+Au collisions at {radical}{ovr s}{sub NN}=130 GeV.},
author = {Adler, C. and Ahammed, Z. and Allgower, C. and Amonett, J. and Anderson, B. D. and Cadman, R. V. and Krueger, K. and Spinka, H. M. and Underwood, D. G. and STAR Collaboration and High Energy Physics and Univ. of Frankfurt and Purdue Univ. and Indiana Univ. and Kent State Univ.},
abstractNote = {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.},
doi = {10.1016/j.physletb.2004.06.044},
journal = {Phys. Lett. B},
issn = {0370-2693},
number = Aug. 12, 2004,
volume = 595,
place = {United States},
year = {2004},
month = {8}
}