Nuclear dependence of azimuthal asymmetry in semi-inclusive deep inelastic scattering

Abstract

Within the framework of a generalized factorization, semi-inclusive deeply inelastic scattering (SIDIS) cross sections can be expressed as a series of products of collinear hard parts and transverse-momentum-dependent (TMD) parton distributions and correlations. The azimuthal asymmetry <cosϕ>$ofunpolarizedSIDISinthesmalltransversemomentumregionwilldependonbothtwist-2and3TMDquarkdistributionsintargetnucleonsornuclei.Nuclearbroadeningofthesetwist-2and3quarkdistributionsduetofinal-statemultiplescatteringinnucleiisinvestigatedandthenucleardependenceoftheazimuthalasymmetry$<\cosϕ>$ is studied. It is shown that the azimuthal asymmetry is suppressed by multiple parton scattering and the transverse momentum dependence of the suppression depends on the relative shape of the twist-2 and 3 quark distributions in the nucleon. A Gaussian ansatz for TMD twist-2 and 3 quark distributions in nucleon is used to demonstrate the nuclear dependence of the azimuthal asymmetry and to estimate the smearing effect due to fragmentation.

9 pages in RevTex with 2 figures

References in corpus (5)

• Matches and mismatches in the descriptions of semi-inclusive processes at low and high transverse momentum
• Systematic Comparison of Jet Energy-Loss Schemes in a realistic hydrodynamic medium
• The Transverse-momentum-dependent Parton Distribution Function and Jet Transport in Medium
• Azimuthal and single spin asymmetry in deep-inelastic lepton-nucleon scattering
• Transverse Momentum Broadening in Semi-inclusive DIS on Nuclei

Cited by in corpus (14)

• Twist-4 contributions to the azimuthal asymmetry in SIDIS
• Azimuthal asymmetries in semi-inclusive DIS with polarized beam and/or target and their nuclear dependences
• 3D Structure and Nuclear Targets
• Leading and higher twist contributions in semi-inclusive e+e- annihilation at high energies
• Higher twist contribution to fragmentation function in inclusive hadron production in e^+e^- annihilation
• Transverse momentum broadening in semi-inclusive deep inelastic scattering at next-to-leading order
• Longitudinal and transverse polarizations of $\Lambda$ hyperon in unpolarized SIDIS and $e^{+}{e}^{-}$ annihilation
• Several Topics on Transverse Momentum-Dependent Fragmentation Functions
• On the process dependent nuclear $k_{\perp }$ broadening effect
• Azimuthal asymmetry in SIDIS off nuclei as probe for $\hat{q}$
• Nuclear dependences of azimuthal asymmetries in the Drell-Yan process
• Polarized vector meson production in semi-inclusive DIS
• Higher-twist contributions to the transverse momentum broadening in semi-inclusive deep inelastic scattering off large nuclei
• Nuclear Drell-Yan effect in a covariant model