Longitudinal heavy quark structure function in the region at

The off-shell behaviors of bound nucleons in deep inelastic lepton nucleus scattering are discussed in two scenarios with the basic constituents chosen to be baryon-mesons and quark-gluons respectively in light-cone formalism. It is found that when taking into account the effect due to internal quark structure of nucleons, the derived scaling variable for bound nucleons and the calculated nuclear structure functions are different from those in considering the baryon-mesons as the effective elementary constituents. This implies that the pure baryon-meson descriptions of nuclei give the inaccurate off-shell behavior of the bound nucleon structure function, thereby the quark-gluons seem to be the most appropriate degrees of freedom for nuclear descriptions.

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Nuclear longitudinal structure function in eA processes at the LHeC

International Journal of Modern Physics A ◽

10.1142/s0217751x17501974 ◽

2017 ◽

Vol 32 (33) ◽

pp. 1750197 ◽

Cited By ~ 1

Author(s):

G. R. Boroun ◽

B. Rezaei ◽

S. Heidari

Keyword(s):

Structure Function ◽

Heavy Quark ◽

Distribution Ratio ◽

Gluon Distribution ◽

Quark Mass ◽

Mass Effect ◽

Longitudinal Structure ◽

Heavy Quark Mass ◽

Longitudinal Structure Function ◽

Geometrical Scaling

The nucleon and nuclear longitudinal structure functions are determined by the Kharzeev–Levin–Nardin (KLN) model of the low-[Formula: see text] gluon distribution. The behavior of the gluon distribution ratio [Formula: see text] and the ratio [Formula: see text] in [Formula: see text] processes are shown in this paper. The heavy longitudinal structure function ratios in [Formula: see text] processes at the LHeC region are discussed. Heavy contributions to the ratio of the total longitudinal structure function are considerable and should not be neglected especially at smaller [Formula: see text] of the LHeC project. In the KLN model, the new geometrical scaling for transition from the linear to nonlinear regions in accordance with the LHeC processes is used, whose results intensively depended on the heavy quark mass effect.

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Second moment of quark structure function of the ρ-meson in QCD sum rules

Journal of High Energy Physics ◽

10.1088/1126-6708/2001/09/002 ◽

2001 ◽

Vol 2001 (09) ◽

pp. 002-002 ◽

Cited By ~ 5

Author(s):

Armen Oganesian ◽

Alexander Samsonov

Keyword(s):

Structure Function ◽

Sum Rules ◽

Qcd Sum Rules ◽

Second Moment ◽

Quark Structure

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QUARK SEA STRUCTURE FUNCTIONS WITHIN NON-PERTURBATIVE APPROACH AND HEAVY QUARK PRODUCTION

Modern Physics Letters A ◽

10.1142/s0217732391002074 ◽

1991 ◽

Vol 06 (21) ◽

pp. 1923-1931 ◽

Cited By ~ 1

Author(s):

A. E. DOROKHOV ◽

N. I. KOCHELEV

Keyword(s):

Heavy Quark ◽

Structure Functions ◽

Heavy Quark Production ◽

Perturbative Approach ◽

Qcd Vacuum ◽

Quark Production ◽

Quark Structure ◽

Instanton Liquid ◽

Aa Collisions

Within the model of QCD vacuum as an instanton liquid the parametrization of the sea quark structure functions in the proton is obtained. A new mechanism of heavy quark production is suggested. It is shown that the J/Ψ suppression as well as ϕ enchancement observed experimentally in AA-collisions can be explained within the non-perturbative mechanism.

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