One-loop matching for transversity generalized parton distribution

Generalized Parton Distributions and Transversity in Nucleons and Nuclei

Subtraction terms for one-loop amplitudes with one unresolved parton

Fully differential next-to-next-to-leading order calculations require a method to cancel infrared singularities. In a previous publication, I discussed the general setup for the subtraction method at NNLO. In this paper I give all subtraction terms for electron-positron annihilation associated with one-loop amplitudes with one unresolved parton. These subtraction terms are integrated within dim...

Two-loop matching conditions for MS parton densities

We discuss how the the operator product expansion (OPE) can be used to derive asymptotic expressions for certain integrals. This yields operator matrix elements (OME’s) which determine the matching conditions for MS parton densities across heavy flavour thresholds. Then we construct four and five-flavour densities from a three-flavour set via the evolution of the AP equation using LO and NLO sp...

Lycen/9301 Probes of Parton Transversity

An inventory is made of the experiments which can measure the transversely polarized quark distributions and fragmentation functions at leading twist.

Using Generalized Language Model for Question Matching

Question and answering service is one of the popular services in the World Wide Web. The main goal of these services is to finding the best answer for user's input question as quick as possible. In order to achieve this aim, most of these use new techniques foe question matching. . We have a lot of question and answering services in Persian web, so it seems that developing a question matching m...