6533b860fe1ef96bd12c2fc3
RESEARCH PRODUCT
Scale evolution of nuclear parton distributions
K. J. EskolaK. J. EskolaV. KolhinenP.v. Ruuskanensubject
PhysicsQuantum chromodynamicsNuclear and High Energy PhysicsParticle physicsScale (ratio)Nuclear TheoryNuclear TheoryHigh Energy Physics::PhenomenologyNuclear structureFOS: Physical sciencesPartonMomentumNuclear Theory (nucl-th)High Energy Physics - PhenomenologyDGLAPHigh Energy Physics - Phenomenology (hep-ph)High Energy Physics::ExperimentBaryon numberTwistNuclear ExperimentParticle Physics - Phenomenologydescription
Using the NMC and E665 nuclear structure function ratios $F_2^A/F_2^D$ and $F_2^A/F_2^{C}$ from deep inelastic lepton-nucleus collisions, and the E772 Drell--Yan dilepton cross sections from proton-nucleus collisions, and incorporating baryon number and momentum sum rules, we determine nuclear parton distributions at an initial scale $Q_0^2$. With these distributions, we study QCD scale evolution of nuclear parton densities. The emphasis is on small values of $x$, especially on scale dependence of nuclear shadowing. As the main result, we show that a consistent picture can be obtained within the leading twist DGLAP evolution, and in particular, that the calculated $Q^2$ dependence of $F_2^{Sn}/F_2^{C}$ agrees very well with the recent NMC data.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1998-02-18 |