Speaker
Mr
Maarten Buffing
(VU University Amsterdam / Nikhef)
Description
We introduce transverse momentum dependent parton distribution functions (TMDs) for quarks and gluons with definite rank. The rank refers to the azimuthal dependence corresponding to the tensorial structure in transverse momenta multiplying universal functions only depending on x and pT^2. In this way only a finite number of functions of definite rank remains for a target with the number depending on its spin. Gauge links, required for color gauge invariance, enter in the explicit description of the matrix elements corresponding to these TMDs and account for their process dependence. In this way a general gauge link dependent function is expressed in the universal set, where all process (i.e. gauge link) dependence is isolated in gluonic pole prefactors multiplying the universal TMDs of definite rank.
Author
Mr
Maarten Buffing
(VU University Amsterdam / Nikhef)
Co-authors
Dr
Asmita Mukherjee
(IIT Bombay)
Piet Mulders
(VU University)
