Looking for intrinsic charm in the forward region at BNL RHIC and CERN LHC

Details Looking for intrinsic charm in the forward region at BNL RHIC and CERN LHC Looking for intrinsic charm in the forward region at BNL RHIC and CERN LHC

2008-05-06

arxiv.org/abs/0805.0810v3

Nucl.Phys.A842:59-71,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, 5 figures. Version to be published in Nuclear Physics A

Scientific paper

10.1016/j.nuclphysa.2010.04.004

The complete understanding of the basic constituents of hadrons and the hadronic dynamics at high energies are two of the main challenges for the theory of strong interactions. In particular, the existence of intrinsic heavy quark components in the hadron wave function must be confirmed (or disproved). In this paper we propose a new mechanism for the production of $D$-mesons at forward rapidities based on the Color Glass Condensate (CGC) formalism and demonstrate that the resulting transverse momentum spectra are strongly dependent on the behavior of the charm distribution at large Bjorken $x$. Our results show clearly that the hypothesis of intrinsic charm can be tested in $pp$ and $p(d) A$ collisions at RHIC and LHC.

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