Constraints for nuclear gluon shadowing from DIS data
نویسندگان
چکیده
منابع مشابه
Constraints for Nuclear Gluon Shadowing from Dis Data
The Q 2 dependence of the ratios of the cross sections of deep inelastic lepton–nucleus scattering is studied in the framework of leading twist, lowest order perturbative QCD. The log Q 2 slope of the ratio F Sn 2 /F C 2 is computed by using the DGLAP evolution equations, and shown to be sensitive to the nuclear gluon distribution functions. Four different parametrizations for the nuclear effec...
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New data from HERA experiment on deep inelastic scattering have been used to parametrize nucleon and Pomeron structure functions. Within the Gribov theory, the parameterizations were employed to calculate gluon shadowing for various heavy ions. The latter was compared with predictions from other models. Calculations of multiplicity reduction due to gluon shadowing for d+Au collisions at forward...
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Opposite-sign lepton pairs (ee,eμ and μμ) from open charm decay are proposed as a measure of nuclear shadowing effects. Via an approximate scaling the ratio of the dilepton spectra from p + A to those from pp reflects the shadowing function well. We show that the required measurements are feasible at the Relativistic Heavy ion Collider (RHIC) by considering the backgrounds according to the prop...
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Within a light-cone QCD formalism based on the Green function technique incorporating color transparency and coherence length effects we study nuclear shadowing in deep-inelastic scattering at moderately small Bjorken xBj . Calculations performed so far were based only on approximations leading to an analytical harmonic oscillatory form of the Green function. We present for the first time an ex...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2002
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(02)01592-7