Search for scalar leptoquarks and T-odd quarks in the acoplanar jet topology using 2.5 fb-1 of ppbar collision data at sqrt(s)=1.96 TeV

Abstract

A search for new physics in the acoplanar jet topology has been performed in 2.5 fb-1 of data from ppbar collisions at sqrt(s)=1.96 TeV, recorded by the D0 detector at the Fermilab Tevatron Collider. The numbers of events with exactly two acoplanar jets and missing transverse energy are in good agreement with the standard model expectations. The result of this search has been used to set a lower mass limit of 205 GeV at the 95% C.L. on the mass of a scalar leptoquark when this particle decays exclusively into a quark and a neutrino. In the framework of the Little Higgs model with T-parity, limits have also been obtained on the T-odd quark mass as a function of the T-odd photon mass.

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• Search for scalar leptoquarks in the acoplanar jet topology in ppbar collisions at sqrt(s)=1.96 TeV
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• Constraining Scalar Leptoquarks from the K and B Sectors
• Search for pair production of second generation scalar leptoquarks
• Search for pair production of first-generation leptoquarks in p pbar collisions at sqrt(s)=1.96 TeV
• Probing Leptoquark and Heavy Neutrino at LHeC
• T-Quarks at the Large Hadron Collider: 2010-12
• Leptoquarks decaying to a top quark and a charged lepton at hadron colliders
• Search for New Physics with a Dijet plus Missing Transverse Energy Signature in p-pbar Collisions at sqrt(s) = 1.96 TeV
• Dileptonic signatures of T-odd quarks at the LHC
• Odd Decays from Even Anomalies: Gauge Mediation Signatures Without SUSY
• Radiative decay Z_H-> γA_H in the little Higgs model with T-parity
• Interference Effects, Time Reversal Violation and Search for New Physics in Hadronic Weak Decays