Chiral-odd fragmentation functions in single pion inclusive electroproduction
We consider a sub-leading twist chiral-odd pion fragmentation function and explore its contribution in single pion semi-inclusive electroproduction. We evaluate the single beam-spin azimuthal asymmetry ALU and the double spin asymmetry ALT in polarized electroproduction of pions from an unpolarized...
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Published in | Physics letters. B Vol. 584; no. 3-4; pp. 276 - 284 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier B.V
01.04.2004
Elsevier Science |
Subjects | |
Online Access | Get full text |
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Summary: | We consider a sub-leading twist chiral-odd pion fragmentation function and explore its contribution in single pion semi-inclusive electroproduction. We evaluate the single beam-spin azimuthal asymmetry ALU and the double spin asymmetry ALT in polarized electroproduction of pions from an unpolarized and transversely polarized nucleon, respectively. The beam asymmetry is expressed as the product of chiral-odd, and T-odd and even distribution and fragmentation functions. The double spin asymmetry contains information on the quark's transversity distribution. In a quark–diquark–spectator framework we estimate these asymmetries at 6 GeV, 12 GeV, and 27.5 GeV energies. |
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ISSN: | 0370-2693 1873-2445 |
DOI: | 10.1016/j.physletb.2004.01.054 |