257 research outputs found
Twist-3 T-odd fragmentation functions and in a spectator model
We present a calculation of the twist-3 T-odd chiral-even fragmentation
functions and using a spectator model. We
consider the effect gluon exchange to calculate all necessary one-loop diagrams
for the quark-quark and quark-gluon-quark correlation functions. We find that
the gluon loops corrections generate non-zero contribution to these two
fragmentation function. We numerically calculate their half- moments by
integrating over the transverse momentum and also verify the equation of motion
relation among , and the Collins function.Comment: 8 pages, 3 figures, match the version published in PL
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