Rapidity asymmetry in high-energy d + A collisions

Wang, Xin-Nian

doi:10.1016/S0370-2693(03)00756-1

Rapidity asymmetry in high-energy d + A collisions

Xin-Nian Wang
(
- LBL, Berkeley
)

Mar, 2003

13 pages

Published in:

Phys.Lett.B 565 (2003) 116-122

e-Print:

nucl-th/0303004 [nucl-th]

DOI:

10.1016/S0370-2693(03)00756-1

Report number:

LBNL-52239

View in:

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Abstract:

In contrast to the recent prediction of high

p_T

hadron suppression within the parton saturation model, it is shown that multiple parton scattering suffered by the projectile will enhance high

p_T

hadron spectra in

d+A

collisions relative to a superposition of binary

p+p

collisions at RHIC. A stronger enhancement in the forward rapidity region of the projectile is also predicted, resulting in a unique rapidity asymmetry of the hadron spectra at high

p_T

. The shape of the rapidity asymmetry should be reversed for low

p_T

hadrons that are dominated by soft and coherent interactions which suppress hadron spectra in the projectile rapidity region. The phenomenon at the LHC energies is shown to be qualitatively different because of parton shadowing.

deuteron nucleus: nuclear reaction
gold
lead
p p: interaction
hadron: hadroproduction
transverse momentum: spectrum
multiple scattering: parton
rapidity: asymmetry
rapidity spectrum
numerical calculations

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Figures(0)

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