Observation of diffractively produced W and Z bosons in PP¯ collisions at sqrt[s]=1.8 TeV.

DØ Collaboration, . and Abazov, V. M. and Bertram, I. A. , et al. (2003) Observation of diffractively produced W and Z bosons in PP¯ collisions at sqrt[s]=1.8 TeV. Physics Letters B, 574 (3-4). pp. 169-179. ISSN 0370-2693

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Abstract

Using the DØ detector, we have observed events produced in collisions that contain W or Z bosons in conjunction with very little energy deposition (“rapidity gaps”) in large forward regions of the detector. The fraction of W boson events with a rapidity gap (a signature for diffraction) is 0.89±0.190.17%, and the probability that the non-diffractive background fluctuated to yield the observed diffractive signal is 3×10−14, corresponding to a significance of 7.5 σ. The Z boson sample has a gap fraction of 1.44±0.610.52%, with a significance of 4.4 σ. The diffractive events have very similar properties to the more common non-diffractive component.

Item Type:
Journal Article
Journal or Publication Title:
Physics Letters B
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/qc
Subjects:
ID Code:
10545
Deposited By:
Users 810 not found.
Deposited On:
17 Jul 2008 11:04
Refereed?:
Yes
Published?:
Published
Last Modified:
19 Aug 2020 08:12