Search for chargino and neutralino associated production with multileptons
Annual Meeting of the Division of Particles and Fields of the American Physical Society, DPF 2006, and the Annual Fall Meeting of the Japan Particle Physics Community (2006)
Search for excited and exotic muons in the μy decay channel in pp - collisions at s=1.96 TeV
Physical Review Letters 97:19 (2006)
Abstract:
We search for excited and exotic muon states * using an integrated luminosity of 371pb-1 of pp collision data at s=1.96TeV. We search for associated production of * followed by the decay *. We compare the data to model predictions as a function of the mass of the excited muon M *, the compositeness energy scale , and the gauge coupling factor f. No signal above the standard model expectation is observed. We exclude 107Search for higgs bosons decaying to bb̄ and produced in association with W bosons in pp̄ collisions at s=1.96TeV
Physical Review Letters 96:8 (2006)
Abstract:
We present a search for Higgs bosons decaying into bb̄ and produced in association with W bosons in pp̄ collisions at s=1.96TeV. This search uses 320pb-1 of the data set accumulated by the upgraded Collider Detector at Fermilab. Events are selected that have a high-transverse momentum electron or muon, missing transverse energy, and two jets, at least one of which is consistent with the hadronization of a b quark. Both the number of events and the dijet mass distribution are consistent with standard model background expectations, and we set 95% confidence level upper limits on the production cross section times branching ratio for the Higgs boson or any new particle with similar decay kinematics. These upper limits range from 10 pb for mH=110GeV/c2 to 3 pb for mH=150GeV/c2. © 2006 The American Physical Society.Search for scalar bottom quarks from gluino decays in p̄p collisions at s=1.96TeV
Physical Review Letters 96:17 (2006)
Abstract:
We searched for scalar bottom quarks in 156pb-1 of p̄p collisions at s=1.96TeV recorded by the Collider Detector at Fermilab II experiment at the Tevatron. Scalar bottom quarks can be produced from gluino decays in R-parity conserving models of supersymmetry when the mass of the gluino exceeds that of the scalar bottom quark. Then, a scalar bottom quark can decay into a bottom quark and a neutralino. To search for this scenario, we investigated events with large missing transverse energy and at least three jets, two or more of which were identified as containing a secondary vertex from the hadronization of b quarks. We found four candidate events, where 2.6±0.7 are expected from standard model processes, and placed 95% confidence level lower limits on gluino and scalar bottom quark masses of up to 280 and 240GeV/c2, respectively. © 2006 The American Physical Society.The CDF Run IIb Silicon Detector: Design, preproduction, and performance
Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment Elsevier 556:2 (2006) 459-481