Polarized vector meson production in semi-inclusive DIS *

Jul 21, 2022, 2:00 PM
Classroom 512 (APCTP)

Classroom 512


Asia Pacific Center for Theoretical Physics, Pohang, Gyeongbuk 37673, Korea


Kai-bao Chen (Shandong Jianzhu University)


We make a calculation for polarized vector meson production SIDIS by considering the general case of neutral current electroweak interactions. We present a kinematic analysis for the process and show that the cross section is expressed by 81 structure functions. We further make a QCD parton model calculation at the leading twist and give the structure functions results in terms of the transverse momentum dependent parton distribution functions and fragmentation functions. There are 27 nonzero structure functions at this level, among which 15 are related to the tensor polarization of the vector meson. Thirteen structure functions are generated by parity-violating effects. We also carry out a rough numerical estimate for the spin alignment of the $K^{*0}$ vector meson.

Primary author

Kai-bao Chen (Shandong Jianzhu University)

Presentation materials