Azimuthal dependence of the heavy quark initiated contributions to DIS
Abstract
We analyze the azimuthal dependence of the heavyquarkinitiated contributions to the leptonnucleon deep inelastic scattering (DIS). First we derive the relations between the partonlevel semiinclusive structure functions and the helicity {gamma}*Q cross sections in the case of arbitrary values of the heavy quark mass. Then the azimuthdependent O({alpha}{sub s}) leptonquark DIS is calculated in the helicity basis. Finally, we investigate numerically the properties of the cos{phi} and cos2{phi} distributions caused by the photonquark scattering (QS) contribution. It turns out that, contrary to the basic photongluon fusion (GF) component, the QS mechanism is practically cos2{phi}independent. This fact implies that measurements of the azimuthal distributions in charm leptoproduction could directly probe the charm density in the proton.
 Authors:
 Yerevan Physics Institute, Alikhanian Br.2, 375036 Yerevan (Armenia)
 Publication Date:
 OSTI Identifier:
 20933225
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevD.75.014010; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; B QUARKS; C QUARKS; CROSS SECTIONS; DEEP INELASTIC SCATTERING; GLUONS; HELICITY; LEPTONS; MASS; PHOTONS; PROTONS; STRUCTURE FUNCTIONS; T QUARKS
Citation Formats
Ananikyan, L. N., and Ivanov, N. Ya.. Azimuthal dependence of the heavy quark initiated contributions to DIS. United States: N. p., 2007.
Web. doi:10.1103/PHYSREVD.75.014010.
Ananikyan, L. N., & Ivanov, N. Ya.. Azimuthal dependence of the heavy quark initiated contributions to DIS. United States. doi:10.1103/PHYSREVD.75.014010.
Ananikyan, L. N., and Ivanov, N. Ya.. Mon .
"Azimuthal dependence of the heavy quark initiated contributions to DIS". United States.
doi:10.1103/PHYSREVD.75.014010.
@article{osti_20933225,
title = {Azimuthal dependence of the heavy quark initiated contributions to DIS},
author = {Ananikyan, L. N. and Ivanov, N. Ya.},
abstractNote = {We analyze the azimuthal dependence of the heavyquarkinitiated contributions to the leptonnucleon deep inelastic scattering (DIS). First we derive the relations between the partonlevel semiinclusive structure functions and the helicity {gamma}*Q cross sections in the case of arbitrary values of the heavy quark mass. Then the azimuthdependent O({alpha}{sub s}) leptonquark DIS is calculated in the helicity basis. Finally, we investigate numerically the properties of the cos{phi} and cos2{phi} distributions caused by the photonquark scattering (QS) contribution. It turns out that, contrary to the basic photongluon fusion (GF) component, the QS mechanism is practically cos2{phi}independent. This fact implies that measurements of the azimuthal distributions in charm leptoproduction could directly probe the charm density in the proton.},
doi = {10.1103/PHYSREVD.75.014010},
journal = {Physical Review. D, Particles Fields},
number = 1,
volume = 75,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}

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