Mr
Nicki Bornhauser
(University of Bonn)
23/08/2010, 16:12
Pheno
We examined an until now unexplained CDF measurement of multi-muon events (arXiv:0810.5357v2). We investigate whether similar events could (and should) have been seen in already completed experiments. The bulk of the CDF data can be reproduced by a simple model; a correct description of events with more than two muons requires a more complicated model. We conclude that the CDF measurement is...
Prof.
Sudeshna Banerjee
(Tata Institute of Fundamental Research)
23/08/2010, 16:46
Pheno
Using 5.4 fb-1 of data from ppbar collisions at sqrt(s)=1.96 TeV recorded
with the D0 detector at the Fermilab Tevatron collider we investigate
various models of new physics using final states with two leptons
(either pairs of charged leptons, or single lepton final states with
missing transverse momentum from neutrinos) and one or two jets. The
searches are used to set limits on the...
Prof.
Maxwell Chertok
(UC Davis)
23/08/2010, 17:03
Pheno
We study same-charge dilepton events in the CDF Run II data sample using up to 5/fb of integrated luminosity collected at the Fermilab Tevatron. These events are rare in the standard model and could indicate new physics processes such as chargino-neutralino production in supersymmetric models. We adopt a model-independent approach and compare the yields and kinematics of events containing an...
Dr
Gianluca De Lorenzo
(IFAE)
23/08/2010, 17:20
Pheno
We present results on searches for squarks and gluinos in proton-antiproton collisions in Run II at the Tevatron. Events containing jets of hadrons and large missing transverse energy in the final state are studied and compared to standard model predictions. In addition to inclusive multijet final states, events containing b-tagged and c-tagged jets are studied in order to enhance the...
Dr
Mark Cooke
(Fermilab)
23/08/2010, 17:37
Pheno
We present the result of various searches for the production of
supersymmetric particles in ppbar collisions at sqrt(s)=1.96 TeV
using 5.4 fb-1 of data collected with the D0 detector at the
Fermilab Tevatron collider. We search for the pair production of the
supersymmetric partner of the bottom quarks in final states with
two b-tagged jets and missing transverse momentum, for...
Prof.
Seong Youl Choi
(Chonbuk National University)
23/08/2010, 17:54
Pheno
In the N=1 supersymmetric extension of the Standard Model, neutralinos associated in supermultiplets with the neutral electroweak gauge and Higgs bosons are, as well as gluinos, Majorana fermions. They can be paired with the Majorana fermions of novel gaugino/scalar supermultiplets, as suggested by extended N=2 supersymmetry, to Dirac particles. Matter fields are not extended
beyond the...