Search for Exclusive Z-Boson
Production and Observation of High-Mass pp-bar-->p gamma
gamma p-bar-->pl+l-p-bar Events in pp-bar Collisions at s=1.96
TeV
Name
PhysRevLett_102_222002.pdf
Size
186.09 KB
Format
Adobe PDF
Checksum (MD5)
4c7b224e5773d2d575397e84e5c7539d
Author(s)
Gomez-Ceballos, Guillelmo
Henderson, C.
Choudalakis, Georgios
Knuteson, Bruce O.
Hahn, Kristian Allan
Goncharov, Maxim
Paus, Christoph M. E.
Xie, Si
Makhoul, Khaldoun
Bauer, Gerry P
Date Issued
June 2009
Journal
Phyisical Review Letters
Publisher
American Physical Society
Citation
CDF Collaboration et al. “Search for Exclusive Z-Boson Production and Observation of High-Mass pp-bar-->p gamma gamma p-bar-->pl+l-p-bar Events in pp-bar Collisions at s=1.96 TeV.” Physical Review Letters 102.22 (2009): 222002. (C) 2010 The American Physical Society.
Version
Final published version
Abstract
This Letter presents a search for exclusive Z boson production in proton-antiproton collisions at √s=1.96 TeV, using the CDF II detector. No exclusive Z→l+l- candidates are observed and the first upper limit on the exclusive Z cross section in hadron collisions is found to be σexcl(Z)<0.96 pb at 95% confidence level. In addition, eight candidate exclusive dilepton events from the process pp̅ →pγγp̅ →pl+l-p̅ are observed, and a measurement of the cross section for Mll>40 GeV/c[superscript 2] and |ηl|<4 is found to be σ=0.24[subscript -0.10] [superscript +0.13] pb, which is consistent with the standard model prediction.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
http://dx.doi.org/10.1103/PhysRevLett.102.222002
