HERMES measurements of {lambda} polarization

Journal Article · Wed Jun 13 00:00:00 EDT 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2750817· OSTI ID:21063956

Rith, Klaus ^[1]

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1. Physikalisches Institut II, Friedrich-Alexander-Universitaet Erlangen-Nuernberg, Erwin-Rommel-Strasse 1, 91058 Erlangen (Germany)

The HERMES experiment at DESY has measured the transfer of polarization from longitudinally polarized 27.6 GeV positrons to {lambda} hyperons produced in semi-inclusive deep-inelastic scattering from unpolarized gas targets internal to the electron/positron ring of the HERA collider. The longitudinal spin transfer coefficient is found to be D{sub LL'}{sup {lambda}} = 0.11 {+-} 0.10 (stat) {+-} 0.03 (syst) at an average fractional energy carried by the {lambda} hyperon <z> = 0.45.

• OSTI ID: 21063956
• Journal Information: AIP Conference Proceedings, Vol. 915, Issue 1; Conference: 17. international spin physics symposium, Kyoto (Japan), 2-7 Oct 2006; Other Information: DOI: 10.1063/1.2750817; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA). HERMES Collaboration; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DEEP INELASTIC SCATTERING
ELECTRONS
GEV RANGE
HERA STORAGE RING
LAMBDA BARYONS
MULTIPARTICLE SPECTROMETERS
PARTICLE IDENTIFICATION
POLARIZATION
POLARIZED BEAMS
POSITRON BEAMS
POSITRON REACTIONS
POSITRONS
SEMI-INCLUSIVE INTERACTIONS
SPIN