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Sep 24 – 29, 2023
US/Eastern timezone

New developments in di-hadron theory and phenomenology

Sep 25, 2023, 2:00 PM
25m
Meeting Room 1-2 (Durham Convention Center)

Meeting Room 1-2

Durham Convention Center

Talk 3D Structure of the Nucleon: TMDs 3D Structure of the Nucleon: TMDs

Speaker

Andreas Metz (Physics Department, Temple University, Philadelphia)

Description

This presentation has two parts. We first discuss a new definition of di-hadron fragmentation functions which have an interpretation as number densities. We then present the results of our extraction of the di-hadron fragmentation functions and the transversity distributions of the nucleon, based on data for electron-positron annihilation, semi-inclusive DIS and proton-proton collisions. We compare our results to a previous analysis of the di-hadron channel and to extractions of the transversity from single-hadron production. Furthermore, we compute the tensor charge which we compare with, in particular, calculations from lattice QCD. Overall, we find that all currently available information on the transversity and the tensor charge is in agreement within errors, leading to a universal picture of these quantities.

Primary author

Andreas Metz (Physics Department, Temple University, Philadelphia)

Co-authors

Alexei Prokudin (JLab) Christopher Cocuzza (Temple University) Daniel Pitonyak (Lebanon Valley College) Nobuo Sato (Jefferson Lab) Ralf Seidl (RIKEN) Wally Melnitchouk (Jefferson Lab)

Presentation materials