622 research outputs found
Nuclear Parton Distributions
We review a microscopic model of the nuclear parton distribution functions,
which accounts for a number of nuclear effects including Fermi motion and
nuclear binding, nuclear meson-exchange currents, off-shell corrections to
bound nucleon distributions and nuclear shadowing. We also discuss applications
of this model to a number of processes including lepton-nucleus deep inelastic
scattering, proton-nucleus Drell-Yan lepton pair production at Fermilab, as
well as W+- and Z0 boson production in proton-lead collisions at the LHC.Comment: 14 pages, 4 figures, invited talk at XXIII International Baldin
Seminar on High Energy Physics Problems "Relativistic Nuclear Physics and
Quantum Chromodynamics" (September 19--24, 2016, Dubna, Russia), to be
published in Proceeding
Deuteron spin structure functions in the resonance and DIS regions
We derive relations between spin-dependent nuclear and nucleon g_1 and g_2
structure functions within the nuclear impulse approximation, which are valid
at all Q^2, and in both the resonance and deep inelastic regions. We apply the
formalism to the specific case of the deuteron, which is often used as a source
of neutron structure information, and compare the size of the nuclear
corrections calculated using exact kinematics and using approximations
applicable at large Q^2.Comment: 22 pages, 7 figures, Fig. 1 correcte
Spin structure functions of 3He at finite Q^2
Using recently derived relations between spin-dependent nuclear and nucleon
g_1 and g_2 structure functions at finite Q^2, we study nuclear effects in 3He
in the nucleon resonance and deep inelastic regions. Comparing the finite-Q^2
results with the standard convolution formulas obtained in the large-Q^2 limit,
we find significant broadening of the effective nucleon momentum distribution
functions, leading to additional suppression of the nuclear g_1 and g_2
structure functions around the resonance peaks.Comment: 33 pages, 6 figures, to appear in Phys. Rev.
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