Measurement of azimuthal asymmetries of the unpolarized cross section at HERMES

Journal Article · Tue Aug 04 00:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3215681· OSTI ID:21316945

Giordano, Francesca ^[1]; Lamb, Rebecca ^[2]

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1. INFN and Universita degli studi di Ferrara (Italy)
2. University of Illinois (United States)

A multi-dimensional (x, y, z, P{sub hperpendicular}) extraction of cos {phi}{sub h} and cos 2{phi}{sub h} azimuthal asymmetries of unpolarized Semi-Inclusive Deep Inelastic Scattering at HERMES is discussed. The use of data taken with hydrogen and deuterium targets and the separation of positive and negative hadrons allow to access flavor-dependent information about quark intrinsic transverse momenta and spin-orbit correlations. This flavor sensitivity allows for a discrimination between theoretical models in the HERMES kinematic regime.

• OSTI ID: 21316945
• Journal Information: AIP Conference Proceedings, Vol. 1149, Issue 1; Conference: 18. international spin physics symposium, Charlottesville, VA (United States), 6-11 Oct 2008; Other Information: DOI: 10.1063/1.3215681; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
CORRELATIONS
CROSS SECTIONS
DEEP INELASTIC SCATTERING
DEUTERIUM TARGET
FLAVOR MODEL
HERA STORAGE RING
HYDROGEN 1 TARGET
L-S COUPLING
PARTICLE KINEMATICS
POLARIZATION
QUARKS
SEMI-INCLUSIVE INTERACTIONS
SENSITIVITY
SPIN
TRANSVERSE MOMENTUM