First glances at the transversity parton distribution through dihadron fragmentation functions

Deep inelastic scattering; Fragmentation functions; Parton distributions; Polarized targets; Transversity; Positron annihilation spectroscopy; Positrons

Abstract :

[en] We present first observations of the transversity parton distribution based on an analysis of pion-pair production in deep-inelastic scattering off transversely polarized targets. The extraction of transversity relies on the knowledge of dihadron fragmentation functions, which we take from electron-positron annihilation measurements. This is the first attempt to determine the transversity distribution in the framework of collinear factorization. © 2011 American Physical Society.

Disciplines :

Physics

Author, co-author :

Bacchetta, A.; Dipartimento di Fisica Nucleare e Teorica, Università di Pavia, via Bassi 6, I-27100 Pavia, Italy > INFN Sezione di Pavia, via Bassi 6, I-27100 Pavia, Italy

Courtoy, Aurore ; INFN Sezione di Pavia, via Bassi 6, I-27100 Pavia, Italy

Radici, M.; INFN Sezione di Pavia, via Bassi 6, I-27100 Pavia, Italy

Language :

English

Title :

First glances at the transversity parton distribution through dihadron fragmentation functions

Publication date :

2011

Journal title :

Physical Review Letters

ISSN :

0031-9007

eISSN :

1079-7114

Publisher :

American Physical Society, New York, United States - New York

Volume :

107

Issue :

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 11 July 2012

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