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Status on the transversity parton distribution: the dihadron fragmentation functions way
Courtoy, Aurore; Bacchetta, Alessandro; Radici, Marco
2012In PoS Proceedings of Science, QNP2012, p. 042
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Abstract :
[en] We report on the extraction of dihadron fragmentation functions (DiFF) from the semiinclusive production of two hadron pairs in back-to-back jets in e+e- annihilation. A nonzero asymmetry in the correlation of azimuthal orientations of opposite π+π− pairs is related to the transverse polarization of fragmenting quarks through a significant polarized DiFF. A combined analysis of this asymmetry and the spin asymmetry in the SIDIS process ep↑→e′(π+π−)X has led to the first extraction of the u and d-flavor transversity parton distribution function in the framework of collinear factorization.
Disciplines :
Physics
Author, co-author :
Courtoy, Aurore ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Physique des astroparticules
Bacchetta, Alessandro;  Universita di Pavia > Dipartimento de Fisica
Radici, Marco;  INFN > Sezione di Pavia
Language :
English
Title :
Status on the transversity parton distribution: the dihadron fragmentation functions way
Publication date :
2012
Event name :
6th International Conference on Quarks and Nuclear Physics (QNP 2012)
Event place :
Palaiseau, France
Event date :
16-20 Apr 2012.
Audience :
International
Journal title :
PoS Proceedings of Science
eISSN :
1824-8039
Publisher :
SISSA, Trieste, Italy
Volume :
QNP2012
Pages :
042
Peer reviewed :
Peer reviewed
Available on ORBi :
since 10 January 2013

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