158 articles – 1995 references  [version française]
 HAL: hal-00740332, version 1
 arXiv: 1108.4755
 ADS Bibliographic id: 2011PhRvD..84g2003A
 Physical Review D 84 (2011) 072003
 Search for resonant production of tt̅ decaying to jets in pp̅ collisions at √s=1.96 TeV
 (2011-10)
 This paper reports a search for nonstandard model topquark resonances, Z', decaying to tt¯→W+bW-b¯, where both W decay to quarks. We examine the top-antitop quark invariant mass spectrum for the presence of narrow resonant states. The search uses a data sample of pp¯ collisions at a center of mass energy of 1.96 TeV collected by the CDF II detector at the Fermilab Tevatron, with an integrated luminosity of 2.8fb-1. No evidence for top-antitop quark resonant production is found. We place upper limits on the production cross section times branching ratio for a specific topcolor assisted technicolor model in which the Z' has a width of ΓZ'=0.012MZ'. Within this model, we exclude a Z' boson with masses below 805GeV/c2 at the 95% confidence level.
 Research team: APC - AHE
 Subject : Physics/High Energy Physics - Experiment
 Keyword(s) : Limits on production of particles – Top quarks – Z bosons – Other gauge bosons