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J/Ψ- nucleon inelastic scattering cross-section dependence Feynman variable

Author: JiaLiFang
Tutor: DuanChunGui
School: Hebei Normal
Course: Theoretical Physics
Keywords: J / ψ Energy Loss Effect Nuclear absorption Nuclear effects J/ψ- nucleon inelastic cross section
CLC: O572.2
Type: Master's thesis
Year: 2010
Downloads: 18
Quote: 0
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Abstract


High energy collisions J / ψ particle generation is the current nuclear physics and particle physics research frontier problems. J / ψ down long ago was considered the nucleus - nucleus collisions Xie confinement states generated signals. However , people soon realized that with the solution of confinement, or, more generally, has nothing to do with the generation of hot nuclear matter effects can affect the observed J / ψ down phenomenon . These effects can be by proton nuclear - nucleus collisions J / ψ production process to study . Through the high-energy proton - nucleus collisions J / ψ resulting research will help to clarify the heavy-ion collisions traditional nuclear down mechanism . In this paper, HKM and EPS08 bound nucleon parton distribution functions and CTEQ6L proton parton distribution , while the Glauber model considered within the framework of a unified effect in the initial state of the incident proton energy loss effect and charmonium states across the nuclear material to nuclear absorption effect , in the leading order approximation, the color evaporation model calculations of the proton - nucleus collisions J / ψ differential cross section ratio generated () RF e / Be x F, and experimental data are compared with the E866 . Found that the incident proton energy loss effect causes () RF e / Be x F x F of depression in a large area parton distribution functions than the nuclear effect is more important. J / ψ- nucleon inelastic cross section σaJb / sψ kinematic variables depend on x F, and in the x F gt; 0.2 x F with the region increases.

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