Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Observation of diffractively produced W and Z bosons in PP¯ collisions at sqrt[s]=1.8 TeV.
AU - DØ Collaboration, .
AU - Abazov, V. M.
AU - Bertram, I. A. , et al.
PY - 2003/11/13
Y1 - 2003/11/13
N2 - 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.
AB - 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.
U2 - 10.1016/j.physletb.2003.09.001
DO - 10.1016/j.physletb.2003.09.001
M3 - Journal article
VL - 574
SP - 169
EP - 179
JO - Physics Letters B
JF - Physics Letters B
SN - 0370-2693
IS - 3-4
ER -