UNIGE document Scientific Article
previous document  unige:38794  next document
add to browser collection
Title

Search for new phenomena in events with two Z bosons and missing transverse momentum in pp collisions at √s=1.96  TeV

CollaborationWith : Clark, Allan Geoffrey / Garcia Navarro, Jose Enrique / Lister, Alison / Wu, Xin
Published in Physical Review. D. 2012, vol. 85, no. 01, p. 011104
Abstract We present a search for new phenomena in events with two reconstructed Z bosons and large missing transverse momentum, sensitive to processes pp→X2X2→ZZX1X1, where X2 is an unstable particle decaying as X2→ZX1 and X1 is undetected. The particles X1 and X2 may be, among other possibilities, fourth-generation neutrinos or supersymmetric particles. We study the final state in which one Z boson decays to two charged leptons and the second decays hadronically. In data corresponding to an integrated luminosity of 4.2  fb−1 from proton-antiproton collisions recorded by the CDF II detector at the Tevatron, with center-of-mass energy of 1.96 TeV, we find agreement between data and standard-model backgrounds. We calculate 95% confidence level upper limits on the cross section of the process pp→X2X2→ZZX1X1 ranging from 50 fb to 1 pb, depending on the masses of X1 and X2.
Identifiers
Full text
Structures
Citation
(ISO format)
CDF COLLABORATION. Search for new phenomena in events with two Z bosons and missing transverse momentum in pp collisions at √s=1.96  TeV. In: Physical Review. D, 2012, vol. 85, n° 01, p. 011104. https://archive-ouverte.unige.ch/unige:38794

176 hits

31 downloads

Update

Deposited on : 2014-07-21

Export document
Format :
Citation style :