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Measurements of $W$ and $Z/γ^*$ cross sections and their ratios in $pp$ collisions at STAR

by Jae Nam

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Submission summary

Authors (as registered SciPost users): Jae Nam
Submission information
Preprint Link: https://arxiv.org/abs/2108.01029v1  (pdf)
Date submitted: 2021-08-03 17:57
Submitted by: Nam, Jae
Submitted to: SciPost Physics Proceedings
Proceedings issue: 28th Annual Workshop on Deep-Inelastic Scattering (DIS) and Related Subjects (DIS2021)
Ontological classification
Academic field: Physics
Specialties:
  • High-Energy Physics - Experiment
  • Nuclear Physics - Experiment
Approach: Experimental

Abstract

While the unpolarized parton distribution functions of the valence quarks ($d$ and $u$) are well determined from DIS experiments, the sea quark counterparts, $\bar{d}$ and $\bar{u}$, are much less constrained, in particular, near the valence region. Measurements of $W^+/W^-$ production ratio in $pp$ collider experiments, such as the STAR experiment at RHIC, can probe the $\bar{d}/\bar{u}$ ratio at a large $Q^2$ set by the $W$ mass. These proceedings will discuss recent results of $W$ and $Z$ cross-section measurements using the STAR $pp$ collision data at a center-of-mass energy of $\sqrt{s} = 500/510\;\mathrm{GeV}$ collected in 2011, 2012, 2013 and 2017.

Current status:
Has been resubmitted

Reports on this Submission

Anonymous Report 1 on 2022-2-14 (Invited Report)

Report

This is a nicely written proceeding with some very interesting results. I would suggest the author updates the right panel of Figure 3 with the text in the figure having a proper aspect ratio.

  • validity: -
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  • originality: -
  • clarity: -
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