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High Energy Physics at the University of Oregon Accelerator-based Accelerator-based Non-accelerator Non-accelerator Theory Theory
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Standard Model What is the universe made of? How does it interact? Standard Model very successful, but incomplete…
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Outstanding Questions What causes mass? What breaks EW symmetry? Are there additional symmetries to nature? Are there extra dimensions? Why matter (not antimatter)? What is dark matter? And many more…
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Experimental HEP Faculty Jim Brau Ray Frey David Strom Eric Torrence
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Theoretical HEP Faculty Nilendra Deshpande Dave Soper Stephen Hsu
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HEP Accelerator Labs BaBarSLD NuTev Opal Truly global field UofO well connected
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Oregon Experiments (Finishing)
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Oregon Experiments (Running) High Luminosity Asymmetric e + e - B-Factory(SLAC) Gravity Wave Interferometer(Hanford)
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1 TeV Linear Collider (Future) e + e - -> HZ Precise Higgs studies Supersymmetry Extra dimensions or ??? Precision electroweak Interesting for new students U Oregon group is VERY involved
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Oregon LC Involvement (ALCPG) Brau Brau US exec committee co-chair Vertex Detectors convener Strom Strom New Physics convener Calorimetry Frey Calorimetry convener Torrence Beam Instrumentation convenor
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Oregon Students + PostDocs SLAC SLAC Jan Strube (BaBar) Olya Igonkina (BaBar postdoc) Minghui Lu (BaBar postdoc) Nick Sinev (senior scientist) Hanford Hanford Masahiro Ito (LIGO/UO) Rauha Rahkola (LIGO/UO) Robert Schofield (LIGO postdoc) Oregon Oregon Dave Mason (NuTev) Sean Walston (SLD) Chris Potter (BaBar) Isabel Leonor (LIGO postdoc) Newer Students Nick Blount Jeffrey Early Brian Stubbs Rahmat Eric Fitzgerald Stable funding (DOE/NSF), serious students welcome
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BaBar Physics High Luminosity Asymmetric e + e - 200M BB, since Nov 99, double by 06! Measure CP violation Matter-antimatter Rare B decays => New physics Tau lepton physics
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CP Violation in B 0 decays Fully reconstruct one B 0 (or B 0 ) as a tag Reconstruct second B in CP eigenstate (J/ S vs. J/ L ) Time dependence => CP violation e - (9 GeV) e + (3 GeV) = 0.56 B tag B CP zzzz ~250 m
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Rare B Decays Forbidden in SM at tree level Highly sensitive to new physics (eg: SUSY) Measure branching fractions to 10 -6 or better Many channels, good thesis topics… b -> s (penguins) B 0 -> (Chris Potter Thesis)
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Rare Tau Decays Neutrino data indicates Lepton Flavor Violation: Neutrino data indicates Lepton Flavor Violation: Search for charged version Search for charged version Signature: 3 charged leptons with no missing momentum Signature: 3 charged leptons with no missing momentum World’s best limits: B( ->lll) lll) < (1-3) x10 -7 (90% CL)
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Local Activities BaBar RPC Teststand Beginning Grad and UG detector work NLC Calorimeter Development NLC Physics Studies NLC Beam Instrumentation Prototypes
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SiW Calorimetry for LC Large Area (6” Si)Large Area (6” Si) 5 mm hex pixel5 mm hex pixel Integrated ReadoutIntegrated Readout Cheap(ish)Cheap(ish)
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HEP Grad Student Education Quantum Mechanics Relativity Computing Programming Analysis Skills Advanced Statistics Simulation Methods Hardware Techniques Electronics Presentation Skills Collaboration Skills Very Broad Education Very Broad Education Useful in ‘real world’ Useful in ‘real world’ Can follow interests Can follow interests ‘Apprentice’ system ‘Apprentice’ system Greatly rewards motivated individuals
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LHC HEP Accelerator Timeline Neutrino experiments Neutrino experiments Particle astrophysics Particle astrophysics LIGO LIGO 200020052010 SLD OPAL BaBar/Belle Tevatron II NLC? 2015 The future of High Energy Particle Physics is bright
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