Flavor dependent azimuthal asymmetries in unpolarized semi-inclusive DIS at HERMES

Journal Article · Wed Jan 15 00:00:00 EST 2014 · Physics of Particles and Nuclei

DOI:https://doi.org/10.1134/S1063779614010353· OSTI ID:22977339

Giordano, F., E-mail: [e-mail] ^[1]

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1. Department of Physics, University of Illinois at Urbana-Champaign, Urbana (United States)

The azimuthal cosϕ{sub h} and cos2ϕ{sub h} modulations of the distribution of hadrons produced in unpolarized semi-inclusive deep-inelastic scattering of electrons and positrons off hydrogen and deuterium targets have been measured in the hermes experiment. For the first time these modulations were determined in a 4-Dimensional kinematic space for positively and negatively charged pions and kaons separately, as well as for unidentified hadrons. These azimuthal dependences are sensitive to the transverse motion and polarization of the quarks within the nucleon via, e.g., the Cahn, Boer-Mulders and Collins effects.

• OSTI ID: 22977339
• Journal Information: Physics of Particles and Nuclei, Vol. 45, Issue 1; Other Information: Copyright (c) 2014 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7796
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DEEP INELASTIC SCATTERING
DEUTERIUM TARGET
FLAVOR MODEL
KAONS
NUCLEONS
PIONS