Double parton distributions in the nucleon on the lattice: Flavor interference effects

2022/11/25 by C. Zimmermann, Zimmermann, Christian, Daniel Reitinger +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2211.14151

openalex publication_date 2022/11/25 · openalex created_date 2022/11/30 · openalex updated_date 2026/07/28

Abstract

Information about double parton distributions (DPDs) can be obtained by calculating four-point functions on the lattice. We continue our study on the first DPD Mellin moment of the unpolarized proton by considering interference effects w.r.t. the quark flavor. In our simulation we employ an n_f = 2 + 1 ensemble with inverse coupling β= 3.4, and pseudoscalar masses of m_π= 355~MeV and m_K = 441~MeV. The results are converted to the MS-scheme at the scale μ= 2~GeV. We analyze the dependence of the considered Mellin moments on the quark polarization and compare our results with quark model predictions.

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