Jul 6 – 13, 2022
Bologna, Italy
Europe/Rome timezone

Pseudo- and quasi-PDFs in the BFKL approximation

Jul 7, 2022, 11:15 AM
Room 1 (Europa Auditorium)

Room 1 (Europa Auditorium)

Parallel Talk Strong interactions and Hadron Physics Strong interactions and Hadron Physics


Giovanni Antonio Chirilli (University of Regensburg)


In Lattice gauge theories , to calculate the PDFs from first principles
it is convenient to consider the Ioffe-time distribution defined through gauge-invariant bi-local operators with spacelike separation. Lattice calculations provide values for a limited range of the distance separating the bi-local operators. In order to perform the Fourier transform and obtain the pseudo- and the quasi-PDFs, it is then necessary to extrapolate the large-distance behavior.

I will discuss the formalism one may use to study the behavior of the Ioffe-time distribution at large distances and show that the pseudo-PDF and quasi-PDF are very different at this regime. Using light-ray operators, I will also show that the higher twist corrections of the quasi-PDF come in not as inverse powers of $P$ but as inverse powers of $x_B P$.

In-person participation Yes

Primary author

Giovanni Antonio Chirilli (University of Regensburg)

Presentation materials