Volume 316 - XXVI International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2018) - WG1: Structure Functions and Parton Densities
Measurements of Nucleon Structure via Proton-Induced Drell-Yan Process at FNAL SeaQuest
K. Nagai* on behalf of the SeaQuest Collaboration
*corresponding author
Full text: pdf
Pre-published on: 2018 September 20
Published on: 2018 November 23
Abstract
SeaQuest at FNAL is a fixed-target experiment to measure the Drell–Yan process in $p+p$ and $p+A$, using the 120-GeV proton beam and targets of liquid hydrogen, liquid deuterium, carbon, iron and tungsten. SeaQuest aims at precisely measuring the flavor asymmetry of light-antiquark distributions $(\bar{d}(x)/\bar{u}(x))$ at large $x$ in the nucleon. It also measures the angular distribution of the Drell–Yan process in $p+p$ and $p+d$ in order to investigate the Lam–Tung relation and further the Boer–Mulders distribution function. It also utilizes the Drell–Yan process in $p+A$ for measuring nuclear effects, including the nuclear dependence of sea quark distributions and the parton energy loss in cold nuclear matter. Here, the results of $\bar{d}/\bar{u}$ are shown.
DOI: https://doi.org/10.22323/1.316.0033
Open Access