Search for New $T^{\prime }$ Particles in Final States with Large Jet Multiplicities and Missing Transverse Energy in ppbar Collisions at sqrt(s) = 1.96 TeV

Abstract

We present a search for a new particle T' decaying to a top quark via T' -> t + X, where X goes undetected. We use a data sample corresponding to 5.7 fb-1 of integrated luminosity of ppbar collisions with sqrt{s} = 1.96 TeV, collected at Fermilab by the CDF II detector. Our search for pair production of T' is focused on the hadronic decay channel, ppbar -> T'T' -> tt +XX -> bbqqqq + XX. We interpret our results in terms of a model where T' is an exotic fourth generation quark and X is a dark matter candidate. The data are consistent with standard model expectations. We set a limit on the generic production of T'T'->tt+XX, excluding the fourth generation exotic quarks T' at 95% confidence level up to m_T' = 400 GeV/c2 for m_X < 70 GeV/c2.

References in corpus (7)

• Dark Matter Candidates from Particle Physics and Methods of Detection
• First results from DAMA/LIBRA and the combined results with DAMA/NaI
• Search for an Annual Modulation in a P-type Point Contact Germanium Dark Matter Detector
• Updated predictions for the total production cross sections of top and of heavier quark pairs at the Tevatron and at the LHC
• Next-to-leading-order predictions for t-channel single-top production at hadron colliders
• Search for Production of Heavy Particles Decaying to Top Quarks and Invisible Particles in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV
• Search for single top quark production in pbar p collisions at sqrt{s}=1.96 TeV in the missing transverse energy plus jets topology

Cited by in corpus (24)

• SUSY, the Third Generation and the LHC
• The Status of GMSB After 1/fb at the LHC
• Search for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC
• Discovering Dark Matter Through Flavor Violation at the LHC
• Probing natural SUSY from stop pair production at the LHC
• Search for single production of a vector-like T quark decaying to a Z boson and a top quark in proton-proton collisions at $\sqrt{s}=$13 TeV
• Stops and MET: the shape of things to come
• Vector-like Singlet Quarks: a Roadmap
• Top-flavored dark matter and the forward-backward asymmetry
• Search for New Phenomena in ttbar Events with Large Missing Transverse Momentum in Proton-Proton Collisions at sqrt(s) = 7 TeV with the ATLAS Detector
• Probing Light Stop Pairs at the LHC
• Phenomenology of 2HDM with VLQs
• Top-Quark Physics: Status and Prospects
• Scalar versus fermionic top partner interpretations of $t\bar{t}+E_T^{\mathrm{miss}}$ searches at the LHC
• Search for a dark matter candidate produced in association with a single top quark in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV
• Hitting sbottom in natural SUSY
• LHC signatures of vector-like quarks
• Large Jet Multiplicities and New Physics at the LHC
• Top Quark Physics at the Tevatron
• The 750 GeV threshold to a new particle world
• Exotic Searches at LHC and Tevatron
• Search for a dijet resonance in events with jets and missing transverse energy in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV
• Phenomenology of extra quarks at the LHC
• Beyond the Desert: Tevatron and LHC Results on Searches for Physics Beyond the Standard Model