Kaon production and kaon to pion ratio in Au + Au collisions at √sոո=130 GeV

C Adler; Lee Barnby; Charles Blyth; Peter Jones; Matthew Lamont; John Nelson

doi:10.1016/j.physletb.2004.06.044

Kaon production and kaon to pion ratio in Au + Au collisions at √sոո=130 GeV

C Adler, Lee Barnby, Charles Blyth, Peter Jones, Matthew Lamont, John Nelson

Physics and Astronomy

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Abstract

Mid-rapidity transverse mass spectra and multiplicity densities of charged and neutral kaons are reported for Au + Au collisions at root(s)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 pseudo-rapidity density. The charged kaon to pion ratios are K+/pi(-) = 0.161 +/- 0.002(stat) +/-0.024(syst) and K-/pi(-) = 0. 146 +/- 0.002(stat) +/-0.022(syst) for the most central collisions. The K+/pi(-) ratio is lower than the same ratio observed at the SPS while the K-/pi(-) is higher than the SPS result. The ratios are enhanced by about 50% relative to p + p and 0 + p collision data at similar energies. (C) 2004 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	143-150
Number of pages	8
Journal	Physics Letters B
Volume	595(1-4)
DOIs	https://doi.org/10.1016/j.physletb.2004.06.044
Publication status	Published - 12 Aug 2004

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@article{aac87ba3917741df9dcefb0d0845ad4d,

title = "Kaon production and kaon to pion ratio in Au + Au collisions at √sոո=130 GeV",

abstract = "Mid-rapidity transverse mass spectra and multiplicity densities of charged and neutral kaons are reported for Au + Au collisions at root(s)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 pseudo-rapidity density. The charged kaon to pion ratios are K+/pi(-) = 0.161 +/- 0.002(stat) +/-0.024(syst) and K-/pi(-) = 0. 146 +/- 0.002(stat) +/-0.022(syst) for the most central collisions. The K+/pi(-) ratio is lower than the same ratio observed at the SPS while the K-/pi(-) is higher than the SPS result. The ratios are enhanced by about 50% relative to p + p and 0 + p collision data at similar energies. (C) 2004 Elsevier B.V. All rights reserved.",

author = "C Adler and Lee Barnby and Charles Blyth and Peter Jones and Matthew Lamont and John Nelson",

year = "2004",

month = aug,

day = "12",

doi = "10.1016/j.physletb.2004.06.044",

language = "English",

volume = "595(1-4)",

pages = "143--150",

journal = "Physics Letters B",

publisher = "Elsevier",

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TY - JOUR

T1 - Kaon production and kaon to pion ratio in Au + Au collisions at √sոո=130 GeV

AU - Adler, C

AU - Barnby, Lee

AU - Blyth, Charles

AU - Jones, Peter

AU - Lamont, Matthew

AU - Nelson, John

PY - 2004/8/12

Y1 - 2004/8/12

N2 - Mid-rapidity transverse mass spectra and multiplicity densities of charged and neutral kaons are reported for Au + Au collisions at root(s)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 pseudo-rapidity density. The charged kaon to pion ratios are K+/pi(-) = 0.161 +/- 0.002(stat) +/-0.024(syst) and K-/pi(-) = 0. 146 +/- 0.002(stat) +/-0.022(syst) for the most central collisions. The K+/pi(-) ratio is lower than the same ratio observed at the SPS while the K-/pi(-) is higher than the SPS result. The ratios are enhanced by about 50% relative to p + p and 0 + p collision data at similar energies. (C) 2004 Elsevier B.V. All rights reserved.

AB - Mid-rapidity transverse mass spectra and multiplicity densities of charged and neutral kaons are reported for Au + Au collisions at root(s)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 pseudo-rapidity density. The charged kaon to pion ratios are K+/pi(-) = 0.161 +/- 0.002(stat) +/-0.024(syst) and K-/pi(-) = 0. 146 +/- 0.002(stat) +/-0.022(syst) for the most central collisions. The K+/pi(-) ratio is lower than the same ratio observed at the SPS while the K-/pi(-) is higher than the SPS result. The ratios are enhanced by about 50% relative to p + p and 0 + p collision data at similar energies. (C) 2004 Elsevier B.V. All rights reserved.

U2 - 10.1016/j.physletb.2004.06.044

DO - 10.1016/j.physletb.2004.06.044

M3 - Article

VL - 595(1-4)

SP - 143

EP - 150

JO - Physics Letters B

JF - Physics Letters B

ER -

Kaon production and kaon to pion ratio in Au + Au collisions at √sոո=130 GeV

Abstract

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