Measurements of the Antiquark Flavor Asymmetry in the Proton by the Drell-Yan Experiment SeaQuest

Journal Article · 13 July 2022 · SciPost Physics Proceedings

DOI: https://doi.org/10.21468/SciPostPhysProc.8.119 · OSTI ID:1876120

Nagai, Kei ^[1]

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1. Los Alamos National Laboratory

The antiquark flavor asymmetry \bar{d}/\bar{u} $\bar{d}/\bar{u}$ in the proton gives an insight on the non-perturbative structure of the proton. The SeaQuest experiment measured the Drell–Yan cross section ratio of proton-deuterium to proton-proton to determine the antiquark flavor asymmetry \bar{d}/\bar{u} $\bar{d}/\bar{u}$ precisely in the range of 0.13<0.45 $0.13<x<0.45$ . SeaQuest provides the evidence of \bar{d}/\bar{u} > 1.0 $\bar{d}/\bar{u}>1.0$ over a wide range of momenta. Some theoretical models reproduce this result.

• Sponsoring Organization: USDOE
• Grant/Contract Number: AC02-06CH11357; FG02-07ER41528; SC0006963
• OSTI ID: 1876120
• Journal Information: SciPost Physics Proceedings, Journal Name: SciPost Physics Proceedings Journal Issue: 8; ISSN 2666-4003
• Publisher: Stichting SciPostCopyright Statement
• Country of Publication: Netherlands
• Language: English