We report a new high-precision measurement of the mid-rapidity inclusive jet longitudinal doublespin asymmetry, ALL, in polarized pp collisions at center-of-mass energy √ s = 200 GeV. The STAR

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We report STAR measurements of the longitudinal double-spin asymmetry A LL , the transverse singlespin asymmetry A N , and the transverse double-spin asymmetries A AE and A TT for inclusive jet production at mid-rapidity in polarized p þ p collisions at a center-of-mass energy of

We derive the transverse momentum dependent (TMD) factorization and resummation formula of the unpolarized transverse momentum distribution (jT) for the single hadron production with the thrust axis in an electron-positron collision. Two different kinematic regions are considered, including small transverse momentum limit jT « Q, and joint transverse momentum and threshold limit jT « Q(1 − zh) « Q, where Q and zh are the hard scattering energy and the observed hadron momentum fraction. Using effective theory methods, we resum logarithms ln(Q/jT) and ln(1 − zh) to all orders. In the end, we present the differential cross sections and Gaussian widths calculated for the inclusive charged pion production and find that our results are consistent with the measurements reported by the Belle collaboration.

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