UFRGS-HEP Journal Club

Friday 7 Jul 2023, 13:30 → 14:30 America/Sao_Paulo

IF-UFRGS

Gustavo Gil Da Silveira (Universidade do Estado do Rio de Janeiro (BR))

13:30 → 14:30 Thomas Iser

Signals of strong parity violation in deep inelastic scattering
Alessandro Bacchetta, Matteo Cerutti, Ludovico Manna, Marco Radici, Xiaochao Zheng
Hide abstract | Show figures | Show BibTeX | Show discussion | View PDF | 2306.04704v1

We include strong parity-violating contributions to inclusive deep inelastic scattering (DIS) of longitudinally polarized leptons off an unpolarized target. At variance with standard results, we obtain nonvanishing parity-violating structure functions in the case of pure photon exchange. The addition of these strong parity-violating contributions improves the description of existing experimental data on DIS parity violating asymmetries. Their size is small but incompatible with zero at about 1.5-σ level.
Authors' comments: 5 pages and Supplemental Material, 2 figures, RevTeX style