On the T-Odd Quark Fragmentation Function and on Transversal Handedness

Details On the T-Odd Quark Fragmentation Function and on Transversal Handedness On the T-Odd Quark Fragmentation Function and on Transversal Handedness

1999-01-04

arxiv.org/abs/hep-ph/9901216v1

Czech.J.Phys. 49S2 (1999) 75-84

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pp, 5 epsfig, Latex 2e, szjp.cls, epsfig.sty, wrapfig.sty included. Talk in "Spin and Symmetry - Praha98". To be published

Scientific paper

10.1007/s10582-999-0088-2

The first probe of the correlation of the T-odd one-particle fragmentation function responsible for the left--right asymmetry of fragmentation of a transversely polarized quark is done by using the 1991-95 DELPHI data for $Z\to 2$-jet decay. Integrated over the fraction of longitudinal and transversal momenta, this correlation is of 1.5% order, which means order of 13% for the analyzing power. A rather large ($\approx 10%$) handedness transversal to the production plane was observed in the diffractive production of ($\pi^-\pi^+\pi^-$) triples from nuclei by the $40 GeV/c \pi^-$--beam. It was shown that the phenomenon has a clear dynamic origin and resembles the single spin asymmetry behavior. All this makes us hope to use this effects in polarized DIS experiments for transversity measurement.

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