Transverse Spin Physics at HERMES

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

DOI:https://doi.org/10.1063/1.3215678· OSTI ID:21316942

Marco, Contalbrigo ^[1]

---

1. INFN Sezione di Ferrara (Italy)

HERMES results on azimuthal single-spin asymmetries in semi-inclusive leptoproduction of pions and charged kaons from a transversely polarised hydrogen target are presented. Preliminary results for both Collins and Sivers Fourier amplitudes are extracted with a much higher statistical significance than the evidence firstly published by HERMES for charged pions in 2005. The first evidence for a correlation between the transverse target polarization and the azimuthal orientation of the plane containing a pair of produced pions is also observed. It is expected to be related to the product of the transversity and an as-yet unmeasured dihadron fragmentation function.

• OSTI ID: 21316942
• 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: 10.1063/1.3215678; (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

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ASYMMETRY
CORRELATIONS
HERA STORAGE RING
HYDROGEN 1 TARGET
KAONS MINUS
KAONS PLUS
MULTIPARTICLE SPECTROMETERS
PARTICLE IDENTIFICATION
PARTICLE PRODUCTION
PIONS MINUS
PIONS PLUS
POLARIZATION
POLARIZED TARGETS
SEMI-INCLUSIVE INTERACTIONS
SPIN
TRANSVERSE MOMENTUM