Events at Physics |
Events on Friday, September 12th, 2008
- Phenomenology Seminar
- Associated Higgs production in CP-violating Supersymmetry: Probing the 'Open Hole' at the LHC
- Time: 2:30 pm
- Place: 5280 Chamberlin Hall
- Speaker: Priyotosh Bandyopadhyay, Chandra Research Institute
- Abstract: A benchmark CP-violating supersymmetric scenario (known in the literature as `CPX-scenario') is studied in the context of the Large Hadron Collider (LHC). It is shown that the LHC, with low to moderate accumulated luminosity, will be able to probe the existing `hole' in the $m_{h_1}$-$ aneta$ plane, which cannot be ruled out by the Large Electron Positron Collider data. This can be done through associated production of Higgs bosons with top quark and top squark pairs leading to the signal emph{dilepton + $leq{5}$ jets (including 3 b-jets) + missing ${p_T}$}. Efficient discrimination of such a CP-violating supersymmetric scenario from other contending ones is also possible at the LHC with a moderate volume of data.
- Physics Department Colloquium
- Double Beta Decay-The Key to Neutrino Properties
- Time: 4:00 pm
- Place: 2241 Chamberlin Hall (coffee at 3:30 pm)
- Speaker: Petr Vogel, Caltech
- Abstract: Experiments with solar, atmospheric, reactor and accelerator neutrinos convincingly show that neutrinos are massive and mixed. But why are neutrinos so extremely light? Perhaps their mass has a different origin, and they are Majorana fermions, unlike the charged leptons and quarks that are Dirac fermions? Neutrinoless ββ decay is the most sensitive probe available to test these ideas. I will first review the history and status of the search for this mode of ββ decay. Then I will describe my own work dealing with the evaluation of the nuclear matrix elements that govern the decay rate and the difficulties of such calculations. Finally, I will briefly review the worldwide program of experimental search for the neutrinoless ββ decay and its relation to other searches for neutrino mass.
- Host: Ramsey-Musolf