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Measurement of an Excited Charmonium State and the Study of J / ψ Polarization in p + p Collisions at s = 200 GeV in PHENIX Experiment at RHIC

Donadelli, Marisilvia

Nuclear physics. A, 2009-08, Vol.827 (1), p.460c-462c [Periódico revisado por pares]

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Título:
Measurement of an Excited Charmonium State and the Study of J / ψ Polarization in p + p Collisions at s = 200 GeV in PHENIX Experiment at RHIC
Autor: Donadelli, Marisilvia
É parte de: Nuclear physics. A, 2009-08, Vol.827 (1), p.460c-462c
Descrição: We report the J / ψ → e + e − and the ψ ′ → e + e − production cross sections in the PHENIX experiment at RHIC. The first measurements of the production cross sections of the ψ ′ and the ψ ′ over the J / ψ , will contribute to the clarification of the theoretical understanding of the J / ψ meson production. The inclusive J / ψ polarization through the same decay channel is also presented, showing a trend of slightly longitudinal polarization for p T < 5 GeV/c .
Editor: Elsevier B.V
Idioma: Inglês

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