Cross section and longitudinal single-spin asymmetry $A_L$ for forward $W^{\pm}\rightarrow\mu^{\pm}\nu$ production in polarized $p+p$ collisions at $\sqrt{s}=510$ GeV - INSPIRE

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Cross section and longitudinal single-spin asymmetry $A_L$ for forward $W^{\pm}\rightarrow\mu^{\pm}\nu$ production in polarized $p+p$ collisions at $\sqrt{s}=510$ GeV

PHENIX

Collaboration

Apr 11, 2018

14 pages

Published in:

Phys.Rev.D 98 (2018) 3, 032007

Published: Aug 14, 2018

e-Print:

1804.04181 [hep-ex]

DOI:

10.1103/PhysRevD.98.032007

Experiments:

BNL-RHIC-PHENIX

View in:

reference search24 citations

Citations per year

Abstract: (APS)

We have measured the cross section and single-spin asymmetries from forward W±→μ±ν production in longitudinally polarized p+p collisions at s=510 GeV using the PHENIX detector at the Relativistic Heavy Ion Collider. The cross sections are consistent with previous measurements at this collision energy, while the most forward and backward longitudinal single spin asymmetries provide new insights into the sea quark helicities in the proton. The charge of the W bosons provides a natural flavor separation of the participating partons.

Note:

431 authors, 14 pages, 9 figures, 3 tables. v2 is version accepted for publication in Phys. Rev. D. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html

Particle Physics Experiments
spin: asymmetry
asymmetry: (measured)
cross section: measured
p p: colliding beams
quark: helicity
quark: sea
p: spin
muon: production
beam: polarization

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