Accueil du site > Publications récentes > The gluon and charm content of the deuteron
Stanley J. Brodsky, Kelly Yu-Ju Chiu, Jean-Philippe Lansberg, Nodoka Yamanaka
We evaluate the frame-independent gluon and charm
parton-distribution functions (PDFs) of the deuteron utilizing
light-front quantization and the impulse approximation. We use a
nuclear wave function obtained from solving the nonrelativistic
Schrödinger equation with the realistic Argonne v18 nuclear force,
which we fold with the proton PDF. The predicted gluon distribution
in the deuteron (per nucleon) is a few percent smaller than that of
the proton in the domain
,
whereas it is strongly enhanced for xbj
larger than 0.6. We discuss the applicability of our analysis and
comment on how to extend it to the kinematic limit xbj→2.
We also analyze the charm distribution of the deuteron within the
same approach by considering both the perturbatively and
non-perturbatively generated (intrinsic) charm contributions. In
particular, we note that the intrinsic-charm content in the deuteron
will be enhanced due to 6-quark “hidden-color” QCD configurations.
Voir en ligne : Phys. Lett. B 783, 287 (2018)
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