Extraction of trans-helicity worm-gear distributions and opportunities
at the Electron-Ion Collider in China
Extraction of trans-helicity worm-gear distributions and opportunities
at the Electron-Ion Collider in China
We present a global analysis of the trans-helicity worm-gear distribution function, $g_{1T}^\perp$, by fitting the longitudinal-transverse double spin asymmetry data of the semi-inclusive deep inelastic scattering. The analysis is performed within the framework of transverse momentum dependent factorization and evolution. It is found that the $u$-quark favors a positive distribution …