Mar 23 – 27, 2020
Brooklyn, NY
US/Eastern timezone

Determination of proton parton distribution functions using ATLAS data

Mar 24, 2020, 3:06 PM
18m
Brooklyn, NY

Brooklyn, NY

333 Adams Street, Brooklyn, New York 11201, USA
Contributed Talk Structure Functions and Parton Densities Structure function and parton densities

Speaker

Stefano CAMARDA

Description

We present fits to determine parton distribution functions (PDFs) using inclusive W/Z-boson and W+jets measurements from the ATLAS experiment at the LHC. The ATLAS measurements are used in combination with deep-inelastic scattering data from HERA. If available, we also present the results of PDF fits that use Z+jets measurements from ATLAS in addition to the measurements listed above. The ATLAS W and Z boson data exhibit sensitivity to the valence quark distributions and the light quark sea composition. The parton distribution functions extracted using W+jets data show an improved determination of the high-​x s​ea-quark densities, while confirming the unsuppressed strange-quark density at lower x<0.02 found by previous ATLAS analyses.

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