Observation of diffractive W-boson production at the fermilab tevatron
Journal
Physical Review Letters
Journal Volume
78
Journal Issue
14
Pages
2698-2703
Date Issued
1997
Author(s)
Abe, F. et al. (CDF Collaboration)
Abstract
We report the first observation of diffractively produced W bosons.In a sample of W → eν events produced in pp collisions at √s=1.8TeV, we find an excess of events with a forward rapidity gap, which is attributed to diffraction.The probability that this excess is consistent with nondiffractive production is 1.1×10−4 (3.8σ).The relatively low fraction of W+ jet events observed within this excess implies that mainly quarks from the Pomeron, which mediates diffraction, participate in W production.The diffractive to nondiffractive W production ratio is found to be RW=(1.15±0.55)%.© 1997 The American Physical Society.
Type
journal article