Mellin moments of the pion light-cone distribution amplitude using the HOPE method

by Mr Anthony Grebe (Massachusetts Institute of Technology), Dr Robert Perry (National Yang Ming Chiao Tung University)

Monday Oct 25, 2021, 9:00 AM → 11:00 AM America/Chicago

Zoom

Speakers: Anthony Grebe (MIT), Robert Perry (National Yang Ming Chiao Tung University)

Abstract: The pion light-cone distribution amplitude (LCDA) is a key object of interest for high-energy exclusive processes in quantum chromodynamics. In this talk, we discuss the calculation of the second Mellin moment of the pion LCDA using the HOPE method. The resulting value for the second Mellin moment is compatible with those from previous determinations of this quantity. The HOPE method can also be applied to extract higher moments of the LCDA, and in this talk we also describe the early progress towards calculating the fourth Mellin moment using the same approach. We present an exploratory investigation at a pion mass of 550 MeV in the quenched approximation.

Reference: https://arxiv.org/abs/2109.15241, https://arxiv.org/abs/2103.09529.

Discussion Panel: Xiang Gao (Central China Normal University)

Zoom: (lathadron)

slides.pdf