R. D. McKeown. Jefferson Lab College of William and Mary
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1 R. D. McKeown Jefferson Lab College of William and Mary Jlab User Meeting, June
2 The Standard Model Renormalizable Gauge Theory Spontaneous Symmetry Breaking n 1 n 2 n 3 Massless g,g Higgs Particle Massive W,Z Fermion masses We have found W, Z, t,b,c,s,d,u,t,m,e,n 1,2,3 Jlab User Meeting, June
3 Quest for the Higgs Particle LEPEWWG Jlab User Meeting, June
4 Standard Model Extremely Successful many accurate predictions But some problems: Higgs not found tension among existing data Not self-consistent Higgs mass Origin of neutrino masses? What is the dark matter? Why not antimatter? Jlab User Meeting, June
5 Unification Q= M/GeV Jlab User Meeting, June
6 The Mass Puzzle Seesaw mechanism n L n R m D m D M n L n R m n m D 2 M m D Jlab User Meeting, June M
7 h Trouble for the Higgs f h (f = t,b,t,m, ) M h2 = (M h2 ) 0 + kg 2 L 2 /(16p 2 ) M h M GUT M Planck (and G F 0) New Physics at TeV scale stabilize M h Is it the dark matter? Jlab User Meeting, June
8 Mass Scales Terascale ~ 1 TeV Unification ~ TeV Planck ~ TeV Symmetries Neutrinos LHC 1E E+10 1E+13 1E+16 1E+19 M (TeV) Jlab User Meeting, June
9 Flow Chart Higgs Mechanism Correct? Yes Terascale Physics No n, symmetries Yes No n, symmetries LHC Discoveries, n, symmetries Need n, symmetries independent of LHC results! Jlab User Meeting, June
10 Low energy studies in the LHC era (and beyond!) Two frontiers in the search for new physics Collider experiments (pp, e + e -, etc) at higher energies (E >> M Z ) Indirect searches at lower energies (E < M Z ) but high precision Large Hadron Collider Ultra cold neutrons, High energy physics CERN Particle, nuclear & atomic physics Jlab User Meeting, June
11 Matter Antimatter Asymmetry (The universe contains matter, not antimatter) Sakharov Criteria: Baryon number violation (or L B) (no evidence yet) CP violation (SM not enough) Non-equilibrium (universe expands, OK, need phase transition?) Experimental info: N-decay, EDM s, n mixing Jlab User Meeting, June
12 Mass - origin of SM masses - mass/energy scales Matter asymmetry - CP violation - B,L violation Summary Attractive Framework: SUSY GUT contains all ingredients needed to address these issues: Light Higgs, CP, B, L, M GUT Is it correct?? Symmetries Neutrinos LHC 1E E+10 1E+13 1E+16 1E+19 M (TeV) Jlab User Meeting, June
13 Recent Neutrino History Persistent observations of deficit of solar neutrinos 1998 observation of oscillations of atmospheric neutrinos by Super-K 2002 SNO results imply matter-dependent oscillations of solar neutrinos KamLAND observes oscillations of reactor (man-made) anti-neutrinos Jlab User Meeting, June
14 Neutrinos Oscillate! First laboratory evidence for physics beyond the standard model!! Jlab User Meeting, June
15 Neutrinos: The Best is Yet to Come? Absolute mass scale q 13 the last mixing angle Mass hierarchy CP violation Antineutrino=neutrino (Majorana)? Jlab User Meeting, June
16 Neutrino Mass Scale sensitivity: m n < 0.2eV (90%CL) ~ 75 m long with 40 s.c. solenoids Jlab User Meeting, June
17 bb Decay Jlab User Meeting, June
18 Neutrinoless bb Decay Whatever processes cause 0nbb, its observation would imply the existence of a Majorana mass term and thus would represent New Physics: Schechter and Valle,82 (n) R e e 0nbb n L W u d d u W By adding only Standard model interactions we obtain ( n) R (n) L Majorana mass term Observing the 0nbb decay implies that n are massive Majorana particles. Jlab User Meeting, June
19 bb Decay Experiments 10 ton 10 mev CUORE EXO Majorana GERDA Jlab User Meeting, June
20 Maki Nakagawa Sakata Matrix Gateway to CP Violation! CP violation Jlab User Meeting, June
21 n e Survival Probability Dominant q 12 Oscillation Subdominant q 13 Oscillation Clean measurements of q, Dm 2 No CP violation, negligible matter effects Jlab User Meeting, June
22 Daya Bay Reactor Neutrino Experiment 4 reactor cores, 11.6 GW 2 more cores in 2011, 5.8 GW Mountains provide overburden to shield cosmic-ray backgrounds Baseline ~2km Multiple detectors measure ratio of far/near sites Jlab User Meeting, June
23 Experiment Construction Assembly Building Jlab User Meeting, June
24 q 13 the last mixing angle Spring 2011: Near site turn-on Spring 2012: Far site turn-on Jlab User Meeting, June
25 n e Appearance DUSEL Mass hierarchy (+/-) FNAL CP violation matter Jlab User Meeting, June
26 Mass Hierarchy and CP Violation Jlab User Meeting, June
27 Supernova Large Underground Detector Long Baseline Neutrino Oscillations Nucleon decay (B violation, Mass scale< M GUT?) Supernova neutrino detection (q 13, r-process?) Jlab User Meeting, June
28 CKM Unitarity Jlab User Meeting, June
29 Lifetime and Correlations combine in a (presently) confused picture for the physics of g A or unitarity X X J. Nico, 2007 A = (5) [PERKEO II 2007] Jlab User Meeting, June
30 Neutron Decay Measurements Correlation measurements Lifetime measurements Jlab User Meeting, June
31 Electric Dipole Moment (EDM) Existence of EDM implies violation of Time Reversal Invariance + - J t t J J + - d T violation CP violation SUSY, Terascale Matter Antimatter asymmetry d - J Jlab User Meeting, June
32 nedm Limits e-cm nedm search Complementary Electron Atoms Nuclei, Deuteron (ring) LHC Jlab User Meeting, June
33 New nedm Experiment Superfluid He UCN converter with high E-field 3 He co-magnetometer Jlab User Meeting, June
34 Parity-violating electron scattering SLAC Moller? JLab Future Scale-dependence of Weak Mixing Jlab User Meeting, June
35 Jlab User Meeting, June
36 meter s first toroid hybrid toroid meters PV Moller Scattering: Custom Toroidal Spectrometer 5kw LH Target SOLID (PVDIS): High Luminosity on LD2 and LH2 Better than 1% errors for small bins Large Q 2 coverage x-range W 2 > 4 GeV 2 36 Jlab User Meeting, June 2010
37 Kurylov, et al. Jlab User Meeting, June
38 Muon g-2 e Momentum Spin 3.4 s 3.4 s SUSY? Jlab User Meeting, June
39 m m e Conversion ( A, Z) e ( A, Z) Courtesy: A. de Gouvea??? MEGA Sindrum II Jlab User Meeting, June
40 Neutrinos have provided dramatic discoveries, with more to come! Fundamental symmetries complement LHC - additional information - can often extend reach beyond LHC Both relevant to other questions -origin of matter -SM masses -nucleosynthesis Many new high-sensitivity experiments Jlab User Meeting, June
41 Many Thanks M. Ramsey-Musolf K. Kumar S. Page H. Robertson B. Filippone P. Vogel A. de Gouvea D. Hertzog R. Holt many others Jlab User Meeting, June
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