Indiana University High Energy Physics
and Astrophysics Seminars
2005-2006 Academic Year
| Mondays, 4pm | Refreshments 3:30 pm |
| Swain West 238 |
Contact: Mike Berger and Mark Messier
Spring Semester 2006
| Feb. 13: | CLEO-C Physics |
| Matt Shepherd | |
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| Feb. 20: | |
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| Feb. 27: | Charmonium and Photons on the Lattice |
| Jo Dudek | |
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Jefferson Lab
While the spectrum of charmonium has attracted the attention of many lattice QCD studies, to date the charmonium radiative transitions and decays are virgin territory. These quantities are relatively well measured experimentally and give insight into the internal structure of $c\bar{c}$ bound states in QCD. I will discuss our recent lattice calculations of form-factors and radiative transitions in charmonium and our novel application of the LSZ reduction and the perturbation series of QED to the problem of computing $\eta_c \to \gamma \gamma$ on the lattice. The results are promising in comparison to experiment and the well-developed quark potential model framework and encourage us to continue with inclusion of hybrid states toward our eventual aim of computing photocouplings relevant to the proposed JLab 12 GeV experiment, GlueX. |
| Mar. 6: | Leptogenesis |
| Mike Berger | |
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The observation of neutrino oscillation phenomena has focused attention on leptogenesis as a mechanism
for producing the observed baryon asymmetry of the Universe. This process involves the CP-violating
decays of heavy neutrinos to produce a lepton asymmetry which eventually develops into a baryon
asymmetry of the required size. I will argue that this mechanism can naturally account for the
predominance of matter over antimatter in the Universe.
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| Mar. 13: | SPRING BREAK |
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| Mar. 20: | GRID Computing |
| Fred Luehring | |
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| Mar. 27: | |
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| Apr. 3: | Could the Higgs boson be invisible? |
| Pauline Gagnon | |
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| Apr. 10: | Some Recent Results from Unquenched Lattice QCD |
| Junko Shigemitsu | |
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Ohio State U.
Lattice QCD calculations that incorporate realistic sea quark content have become feasible in recent years thanks to the development of improved light quark actions and the general availability of unquenched gauge configurations created by the MILC collaboration based on such actions. This talk will give examples of unquenched lattice studies of the strong coupling constant alpha_s and of B meson leptonic and semileptonic decays. Progress in determining the lesser known CKM matrix elements and in constraining the Unitarity Triangle will be discussed. |
| Apr. 11:
Tuesday
Special Seminar 2 pm |
Results from MINOS |
| Masaki Ishitsuka | |
| Indiana University
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| Apr. 17: | Results from D0 |
| Vivek Jain | |
| SUNY, Albany
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| Apr. 21:
Friday Special Seminar 3:00 pm |
Latest Results from the MINOS Experiment |
| Francisco Yumiceva | |
| College of William and Mary
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| Apr. 24: | Kaon Mass Measurement using MIPP |
| Nick Graf | |
| Indiana U.
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| June 2:
Friday Special Seminar 2:00 pm |
Extra Dimensions: Unification and Neutrino masses |
| Satya Nandi | |
| Oklahoma State University
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