Cross section and longitudinal single-spin asymmetry AL for forward W± →μ±ν production in polarized p+p collisions at s =510 GeV

Summary, in English

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. © 2018 authors. Published by the American Physical Society.

• Author: A. Adare; Peter Christiansen; Anders Oskarsson; David Silvermyr; Evert Stenlund; L. Zou
• Department/s: eSSENCE: The e-Science Collaboration; Particle and nuclear physics
• Publishing year: 2018
• Language: English
• Publication/Series: Physical Review D
• Volume: 98
• Issue: 3
• Links: http://dx.doi.org/10.1103/PhysRevD.98.032007
• Document type: Journal article
• Publisher: American Physical Society
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 2470-0010