Initial state parton broadening and energy loss probed in d + Au at RHIC - INSPIRE

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Initial state parton broadening and energy loss probed in d + Au at RHIC

Ivan Vitev
(
- Iowa State U.
)

Feb, 2003

13 pages

Published in:

Phys.Lett.B 562 (2003) 36-44

e-Print:

nucl-th/0302002 [nucl-th]

DOI:

10.1016/S0370-2693(03)00535-5

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Abstract: (Elsevier)

The impact parameter and rapidity dependence of the Cronin effect for massless pions in d +Au reactions at s NN =200 GeV at RHIC is computed in the framework of pQCD multiple elastic scattering on a nuclear target. We introduce a formalism to incorporate initial state energy loss in perturbative calculations and take into account the elastic energy loss in addition to the transverse momentum broadening of partons. We argue that the centrality dependence of the Cronin effect can distinguish between different hadron production scenarios at RHIC. Its magnitude and rapidity dependence are shown to carry important experimental information about the properties of cold nuclear matter up to the moderate- and large- x antishadowing/EMC regions.

12.38.Mh
24.85.+p
25.75.-q
scattering: heavy ion
deuterium
gold
p nucleus: nuclear reaction
pi: hadroproduction
dependence: impact parameter
rapidity: dependence

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Figures(5)

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