/ 0 30 60 14 v 1 1 0 Ju n 20 03 φ meson production in √ s NN = 200 GeV Au + Au and pp collisions at RHIC
نویسنده
چکیده
We present the results for the measurement of φ meson production in √ s N N = 200 GeV Au+Au and pp collisions at the Relativistic Heavy Ion Collider (RHIC). Using the event mixing technique, spectra and yields are obtained from the φ → K + K − decay channel for different centrality bins in Au+Au collisions and in pp collisions. We observe that the spectrum shape in Au+Au collisions depends weakly on the centrality and the shape of the spectrum in pp collisions is significantly different from that in Au+Au collisions. In Au+Au collisions, the extracted yield of φ meson is flat as a function of rapidity; The < p T > of φ, extracted from the fit function to the spectra, shows a different behavior as a function of centrality than that of π − , K − and ¯ p.
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