phi meson production in Au + Au and p + p collisions at root S-NN=200 GeV

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F05%3A00308785" target="_blank" >RIV/68378271:_____/05:00308785 - isvavai.cz</a>
Alternative codes found
RIV/61389005:_____/05:00308785
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
phi meson production in Au + Au and p + p collisions at root S-NN=200 GeV
Original language description
We report the STAR measurement of phi meson production in Au + Au and p + p collisions at root s(NN) = 200 GeV. Using the event mixing technique, the phi spectra and yields are obtained at mid-rapidity for five centrality bins in Au + Au collisions and for non-singly-diffractive p + p collisions. It is found that the phi transverse momentum distributions from Au + An collisions are better fitted with a single-exponential while the p + p spectrum is better described by a double-exponential distribution.The measured nuclear modification factors indicate that phi production in central An + An collisions is suppressed relative to peripheral collisions when scaled by the number of binary collisions (< N-bin>). The systematics of < p(t)> versus centrality and the constant phi/K- ratio versus beam species, centrality, and collision energy rule out kaon coalescence as the dominant mechanism for phi production.
Czech name
Produkce mezonů phi ve srážkách Au+Au a p+p při root S-NN=200 GeV
Czech description
Produkce mezonů phi ve srážkách Au+Au a p+p při root S-NN=200 GeV.

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BG - Nuclear, atomic and molecular physics, accelerators
OECD FORD branch
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Project
<a href="/en/project/GA202%2F04%2F0793" target="_blank" >GA202/04/0793: Study of nucleus-nucleus and proton-proton collisions at RHIC</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2005
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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