High Energy Physics at the University of Oregon Accelerator-based Accelerator-based Non-accelerator Non-accelerator Theory Theory

Standard Model  What is the universe made of?  How does it interact? Standard Model very successful, but incomplete…

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…

Experimental HEP Faculty Jim Brau Ray Frey David Strom Eric Torrence

Theoretical HEP Faculty Nilendra Deshpande Dave Soper Stephen Hsu

HEP Accelerator Labs BaBarSLD NuTev Opal Truly global field UofO well connected

Oregon Experiments (Finishing)

Oregon Experiments (Running) High Luminosity Asymmetric e + e - B-Factory(SLAC) Gravity Wave Interferometer(Hanford)

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

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

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

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

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 zzzz ~250  m

Rare B Decays Forbidden in SM at tree level Highly sensitive to new physics (eg: SUSY) Measure branching fractions to or better Many channels, good thesis topics… b -> s  (penguins) B 0 ->     (Chris Potter Thesis)

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)

Local Activities BaBar RPC Teststand Beginning Grad and UG detector work NLC Calorimeter Development NLC Physics Studies NLC Beam Instrumentation Prototypes

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)

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

LHC HEP Accelerator Timeline Neutrino experiments Neutrino experiments Particle astrophysics Particle astrophysics LIGO LIGO SLD OPAL BaBar/Belle Tevatron II NLC? 2015 The future of High Energy Particle Physics is bright