Factorization connecting continuum & lattice TMDs

نویسندگان

چکیده

Transverse-momentum-dependent parton distribution functions (TMDs) can be studied from first principles by a perturbative matching onto lattice-calculable quantities: so-called lattice TMDs, which are class of equal-time correlators that includes quasi-TMDs and TMDs in the Lorentz-invariant approach. We introduce general correlator as special cases these two Lattice continuum like Collins scheme. Then, to facilitate derivation factorization relation between we construct new scheme, Large Rapidity (LR) intermediate quasi-TMDs. The LR schemes differ only an order limits, matched one another multiplicative kernel. show this same also holds quasi enables us prove quantities all orders $\alpha_s$. Our results imply there is no mixing various quark flavors or gluons when making calculation individual gluon easier than anticipated. cross-check explicitly at loop discuss implications for other physical-to-lattice scheme factorizations.

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ژورنال

عنوان ژورنال: Journal of High Energy Physics

سال: 2022

ISSN: ['1127-2236', '1126-6708', '1029-8479']

DOI: https://doi.org/10.1007/jhep04(2022)178