Reference : First glances at the transversity parton distribution through dihadron fragmentation fun...

	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/2268/127157

Title :	First glances at the transversity parton distribution through dihadron fragmentation functions
Language :	English
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 > > > > >]
Publication date :	2011
Journal title :	Physical Review Letters
Volume :	107
Issue/season :	1
Audience :	International
ISSN :	0031-9007
e-ISSN :	1079-7114
Keywords :	[en] 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.
Permalink :	http://hdl.handle.net/2268/127157
DOI :	10.1103/PhysRevLett.107.012001

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