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High Energy Theory Group Overview and Some Recent Results Outline 1. High Energy Theory Group 2. Research Activities 3. Some Recent Results 4. Perspective.

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Presentation on theme: "High Energy Theory Group Overview and Some Recent Results Outline 1. High Energy Theory Group 2. Research Activities 3. Some Recent Results 4. Perspective."— Presentation transcript:

1 High Energy Theory Group Overview and Some Recent Results Outline 1. High Energy Theory Group 2. Research Activities 3. Some Recent Results 4. Perspective (Future) William J. Marciano 04-18-06

2 1. High Energy Theory Group (FY2006) Permanent Staff (6) M. Creutz W. Kilgore W. Marciano F. Paige A. Soni (Group Leader) T.L. Trueman (Half-time) Also: S. Dawson (Physics Chair) E. Scholz (SciDAC) Research Associates C. Jackson T. Krupovnickas D. Suprun

3 Central Role in Physics Department High Energy Theory ATLAS DØ ILC Neutrinos MINOS, Daya Bay VLBL g μ -2 EDM Nuclear Theory D. Kharzeev et al. RIKEN/BNL Research Center Lattice Gauge Theory F. Karsch et al. Finite Temp. RHIC Polarized PP Unique Environment 2. Research Activities

4 Diverse Research Program Lattice Gauge Theories: Formalism and Phenomenology: M. Creutz, A. Soni (RBRC) LHC Collider Physics: W. Kilgore, F. Paige, (S. Dawson), C. Jackson, T. Krupovnickas B Physics: A. Soni, D. Suprun Perturbative QCD: W. Kilgore, (S. Dawson) Polarized Protons (QCD at RHIC): T.L. Trueman Electroweak Physics (Precision, Rare, Low Energy, Neutrinos): W. Marciano, T. Krupovnickas

5 3. Some Recent Results Precision Test of CKM Unitarity (Marciano and Sirlin, PRL 96, 032002 [2006]) |V ud | 2 +|V us | 2 +|V ub | 2 =1 10 -5 Superallowed Nuclear Beta Decays (0 + 0 + ) Electroweak Radiative Corrections ~4% Uncertainties? Was: V ud = 0.9736(2)(4) RC Now: V ud = 0.97377(11)(15)(19) RC New Ingredients: Bjorken Sum Rule Analogy Large N QCD (Resonances)

6 Neutron DecayBjorken Sum Rule

7 K  l Data V us = 0.2257(9)(0.961/ f + (o)) Use f + (o) = 0.961(8) (Leutwyler and Roos [1984]) |V ud | 2 + |V us | 2 + |V ub | 2 = 0.9992(5) V ud (4) V us (8) f + (o) Good Agreement With Unitarity Future: Lattice f + (o) Use Bj SR Data (5) V ud (4) Experiment: Nuclear Q Values (Revolution?) Other Applications: sin 2  W, Atomic Parity Violation

8 Muon g-2 Hadronic Vacuum Polarization e + e -  +  - vs.    o  - -T. Krupovnickas and W. Marciano Neutrinoless Double Beta Decay: Xenon vs. Germanium EXO Experiment (Enhanced or Suppressed?) -T. Krupovnickas and W. Marciano Very Long Baseline Neutrino Oscillations (BNL or FNAL- Homestake) sin 2 2 13, Matter, CP Violation, “ New Physics ” -W. Marciano and BNL Study Group Other Electroweak Research

9 Odderon in Polarized PP

10

11 4. Perspective (Future) BNL is: ATLAS Center, QCD Lab, Supercomputer-Lattice Remain a strong and diverse group Respond to Discoveries, Big Lattice Effort, LHC Phenomenology Hard due to dwindling resources (Aging group) 1994Now (2006)2007 Permanent Staff75 1/2 Associate Physicist 20 Assistant Physicist 001 Postdocs432 Summer Visitors, Students…Workshops. Need more Postdocs and Students

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