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Kaon production and kaon to pion ratio in Au+Au collisions at root(NN)-N-s=130 GeV
- 1.0105645 - UJF-V 20043216 RIV NL eng J - Journal Article
Adler, C. - Ahammed, Z. - Angelis, A. L. S. - Kugler, Andrej - Šumbera, Michal - Zborovský, Imrich
Kaon production and kaon to pion ratio in Au+Au collisions at root(NN)-N-s=130 GeV.
[Produkce kaonů a poměr kaonů k pionům ve srážkách Au+Au při root(s_NN)=130 GeV.]
Physics Letters. B. Roč. 595, - (2004), s. 143-150. ISSN 0370-2693. E-ISSN 1873-2445
R&D Projects: GA AV ČR KSK1048102
Keywords : heavy-ion collisions * plus Au reactions
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 4.619, year: 2004
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
Střední rapidita spektra příčných hmotností a multiplicity hustot nabitých a neutrálních kaonů pro srážky na RHIC jsou oznámeny. Multiplicity hustot pro tyto částice škálují s hustotou negativní hadronové pseudorapidity. Poměr K+/pi- je nižší nez pozorovaný na SPS, zatímco K-/pí- je vyšší než výsledek SPS
Permanent Link: http://hdl.handle.net/11104/0012873
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