Measurement of the charge asymmetry of electrons from the decays of W bosons produced in p p¯ collisions at √ s=1.96 TeV
Name
PhysRevD.104.092002.pdf
Description
Published version
Size
1.45 MB
Format
Adobe PDF
Checksum (MD5)
4c3040bfaca8c3cebd2a6645ef077cb2
Author(s)
Paus, Christoph
Date Issued
2021
Journal
Physical Review D
Publisher
American Physical Society (APS)
Citation
Paus, Christoph. 2021. "Measurement of the charge asymmetry of electrons from the decays of W bosons produced in p p¯ collisions at √ s=1.96 TeV." Physical Review D, 104 (9).
Version
Final published version
Abstract
At the Fermilab Tevatron proton-antiproton ($p\bar{p}$) collider, high-mass
electron-neutrino ($e\nu$) pairs are produced predominantly in the process $p
\bar{p} \rightarrow W(\rightarrow e\nu) + X$. The asymmetry of the electron and
positron yield as a function of their pseudorapidity constrain the slope of the
ratio of the $u$- to $d$-quark parton distributions versus the fraction of the
proton momentum carried by the quarks. This paper reports on the measurement of
the electron-charge asymmetry using the full data set recorded by the Collider
Detector at Fermilab in 2001--2011 and corresponding to 9.1~fb$^{-1}$ of
integrated luminosity. The measurement significantly improves the precision of
the Tevatron constraints on the parton-distribution functions of the proton.
Numerical tables of the measurement are provided.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution 4.0 International license
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DOI of Published Version
https://doi.org/10.1103/PHYSREVD.104.092002
