Seminars - Fall 2003

September 29, 2003 (Monday) Subhendu Rakshit, Technion, Israel

October 13, 2003 (Monday) Sean Walston, University of Oregon

October 27, 2003 (Monday) Mike Hildreth, University of Notre Dame

November 3, 2003 (Monday) Davison Soper, University of Oregon

November 6, 2003 (Thursday) Linear Collider Seminar

November 24, 2003 (Monday) Lance Dixon, SLAC

TBA Nilendra Deshpande, University of Oregon

December 5, 2003 (Friday) Justin H. He, University of Texas at Austin

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UO Center for High Energy Physics

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September 29, 2003 - Monday

Subhendu Rakshit, Technion, Israel

Generic Neutrino Spectra in the Presence of R-parity Violation

We explore the generic structure of neutrino spectrum generated in the presence of bilinear and trilinear R-parity violating couplings. We also study the effect of nondegeneracy of the sneutrinos. We also invoke abelian flavour symmetry to explain the order of magnitudes of the R-parity violating parameters and investigate whether this scenario is compatible with the data.

4:00 pm, 472 Willamette Hall

Refreshments served at 3:45

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October 13, 2003 - Monday

Sean Walston, University of Oregon

Heavy Flavor Decays of the Z0 and a search for Flavor Changing Neutral Currents

We present our measurements of the Z0 boson to b and c quark production fractions, Rb and Rc, as well as the results of our search for Flavor Changing Neutral Currents in Z0 decays through the measurement of Rbs=Z->bs/Z->hadrons using the 96-98 SLD data sample of 400K hadronic Z0 decays. We extract Rb, Rc, and Rbs simultaneously using a multi-tag method. These measurements rely on the unique features of the SLD experiment, especially the high resolution CCD vertex detector, the micron size beam spot, and the Cherenkov Ring Imaging Detector used for particle identification.

4:00 pm, 472 Willamette Hall

Refreshments served at 3:45

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October 27, 2003 - Monday

Mike Hildreth, University of Notre Dame

Results and Prospects from D0

4:00 pm, 472 Willamette Hall

Refreshments served at 3:45

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November 3, 2003 - Monday

Davison Soper, University of Oregon

Adding Showers to Next-to-leading Order Event Generators in QCD

4:00 pm, 472 Willamette Hall

Refreshments served at 3:45

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November 6, 2003 - Thursday

Linear Collider Seminar

The American Linear Collider Physics Group (ALCPG) has initiated a series of monthly seminars intended for a broad audience. The seminars will be held in virtual rooms using talks posted to the web, phone conferences, and VRVS.

Connections to Astrophysics and Cosmology

Jonathan Feng & Mark Trodden

The progress in astrophysics and cosmology in recent years provides many new questions and new motivations for particle physics. A working Group of the American Linear Collider Physics Group has been formed and charged with evaluating the connections of linear collider physics to astrophysics and cosmology. We will describe the goals of this subgroup, the central topics to be explored, and some of the outstanding questions we seek to answer. A preliminary organizational plan and timeline have been developed. We will present this plan and timeline, solicit advice and reactions, and answer questions for potential contributors.

1:00 pm, 472 Willamette Hall

NOTE SPECIAL DAY AND TIME

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November 24, 2003 - Monday

Lance Dixon, SLAC

Precise Production Predictions for Proton-(anti)proton Processes: Lepton-pair Rapidity Distributions at NNLO in QCD

4:00 pm, 472 Willamette Hall

Refreshments served at 3:45

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TBA

Nilendra Deshpande, University of Oregon

TBA

4:00 pm, 472 Willamette Hall

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December 5, 2003 - Friday

Justin H. He, University of Texas at Austin

Structure of Cosmological CP Violation via Neutrino Seesaw

4:00 pm, 472 Willamette Hall

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