Regular Article - Theoretical Physics
Alignment function as a new kind of transverse momentum dependent functions
Bogoliubov Laboratory of Theoretical Physics JINR, 141980, Dubna, Russia
2 National Centre for Nuclear Research (NCBJ), 02-093, Warsaw, Poland
Accepted: 14 July 2022
Published online: 31 August 2022
We argue the existence of new -dependent functions which can be manifested in the Drell-Yan (SIDIS)-like processes. The presented new functions resemble the well-known Boer-Mulders function associated with the quark spin asymmetry, but in contrast they are sensitive to the transverse motion of partons inside the hadron due to the collective alignment of quark spin vectors.
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