| Sunday 5 May 2024 | |
| Events for day: Monday 28 February 2022 |
| 11:00 - 12:00 Journal Club: Experiment & Phenomenology - google meet Isovector EMC effect from global QCD analysis with MARATHON data School PARTICLES AND ACCELERATORS We report the results of a Monte Carlo global QCD analysis of unpolarized parton distribution functions (PDFs), including for the first time constraints from ratios of $^3$He to $^3$H structure functions recently obtained by the mar experiment at Jefferson Lab. Our simultaneous analysis of nucleon PDFs and nuclear effects in $A!=!2$ and $A!=!3$ nuclei reveals the first indication for an isovector nuclear EMC effect in light nuclei. We find that while the mar data yield relatively weak constraints on the $F_2^n/F_2^p$ neutron to proton structure function ratio and on the $d/u$ PDF ratio, they suggest an enhanced nuclear effect on ... |