Mr
Satyanarayan Mukhopadhyay
(Harish-Chandra Research Institute)
27/08/2010, 14:00
Pheno
We point out that same-sign multilepton events, not given due attention yet for new physics
search, can be extremely useful at the Large Hadron Collider. After showing the easy reducibility
of the standard model backgrounds, we demonstrate the viability of same-sign trilepton signals for
R-parity breaking supersymmetry, at both 7 and 14 TeV. We find that same-sign four-leptons, too,
can...
Mr
Tim Stefaniak
(BCTP Bonn)
27/08/2010, 14:17
Pheno
In R-parity violating (RPV) supersymmetry the lightest supersymmetric particle (LSP) may in principle have charge and/or flavor. I explore possible scenarios with a selectron-LSP within the RPV-mSUGRA model. The LSP decays in the detector. I shall present the relevant collider signatures. A promising search strategy for the LHC would be a trilepton analysis which I will present in detail.
Mr
Nils-Erik Bomark
(University of Bergen)
27/08/2010, 14:34
Pheno
If Supersymmetry is realized in nature, there is no need for R-Parity to be exactly conserved. In this case, for a wide range of couplings, the MSSM production and cascade decay of sparticles would be followed by a three-body neutralino decay through trilinear R-Parity violating operators.
Since neutralinos couple to all fermions and thus can potentially decay through all 45 trilinear R-...
Sebastian Fleischmann
(University of Bonn)
27/08/2010, 14:51
Pheno
A well motivated model is R-parity violating minimal supergravity (mSUGRA). In this model, lepton number is violated and the lightest supersymmetric particle (LSP) is non-stable and can thus be charged. We investigate the discovery potential at the LHC of two benchmark scenarios of R-parity violating mSUGRA with a stau-LSP. The scenarios differ in their R-parity violating coupling and can be...
Mr
Michael Herbst
(H1 Collaboration)
27/08/2010, 15:08
Pheno
H1 experiment at HERA released recently preliminary results on SUSY searches in ep collisions using the full data set from HERA II run. This represents an increase by up to a factor of 10 in luminosity in electron-proton collisions and a factor of 3 in positron-proton collisions compared to previous studies. The searches address models with RP-violation, where squarks can be produced in...
Dr
Tom Schwarz
(Univ.of California, Davis)
27/08/2010, 15:25
Pheno
A method of reconstructing t-tbar events in the lepton plus jets decay mode is applied to a measurement of the forward backward asymmetry in t- tbar pair production at CDF. The measurement is a test of discrete symmetries in t-tbar production and strong interactions at large Q^2. In the present data set it is potentially sensitive to the presence of parity-violating production channels such as...