Testing the Standard Model and Beyond DOE Review 2004 • Progress Report Shufang Su • U. of Arizona

Research and Collaborations - New candidate of dark matter (DM) : superWIMP J. Feng, F. Takayama (UC Irvine) Model independent study of collider DM searches Precision study of SUGRA, GMSB and AMSB S. Heinemeyer (CERN), G. Weiglein (IPPP, Durham) Propagation of high energy stau M. H. Reno (U. IOWA), I. Sarcevic (UA) Phenomenology of warped SUSY GUT model C.W. Chiang (NCU), T. Han (U. Wisconsin), L.T. Wang (Harvard) MSSM contribution to precision observables M. Ramsey-Musolf (Caltech) S. Su DOE Review, 2004

SuperWIMP Dark Matter WIMP  SWIMP + SM particle WIMP J. Feng, F. Takayama (UC Irvine) - WIMP  SWIMP + SM particle FRT hep-ph/0302215, 0306024 WIMP 104 s  t  108 s SM WIMP SWIMP (DM)  Gravitino LSP  LKK graviton 106 S. Su DOE Review, 2004

SWIMP and SUSY WIMP SWIMP: G (LSP) WIMP: NLSP mG » mNLSP ~ SUSY case - SWIMP: G (LSP) WIMP: NLSP mG » mNLSP ~ SUSY case ~ Ellis et. al., hep-ph/0312262; Wang and Yang, hep-ph/0405186. 104 s  t  108 s NLSP  G + SM particles ~ neutralino/chargino NLSP slepton/sneutrino NLSP BBN EM had Brhad  O(0.01) Brhad  O(10-3) S. Su DOE Review, 2004

Viable Parameter Space - NLSP, EM,had=EM,had BEM,had YNLSP apply CMB and BBN constraints on (NLSP, EM/had )  viable parameter space 200 GeV ·  m · 400 » 1500 GeV mG ¸ 200 GeV ~  m · 80 » 300 GeV S. Su DOE Review, 2004

Distinguish from stau NLSP and gravitino LSP in GMSB Collider Phenomenology - SWIMP Dark Matter no signals in direct / indirect dark matter searches SUSY NLSP: rich collider phenomenology NLSP in SWIMP: long lifetime  stable inside the detector Charged slepton highly ionizing track, almost background free Distinguish from stau NLSP and gravitino LSP in GMSB sneutrino and neutralino NLSP missing energy signal: energetic jets/leptons + missing energy  Does it decay into gravitino or not?  Is the lightest SM superpartner sneutrino or neutralino? S. Su DOE Review, 2004

Model Independent Study of DM collider searches J. Feng, F. Takayama (UC Irvine) - Charged WIMP Dark Matter (DM) relic density Annihilation cross section:  ( DM ! SM particle) Production cross section: Tevatron:  ( pp ! DM) LHC:  ( pp ! DM) LC:  ( e+e- ! DM) - Two charged track, BG free Guaranteed detection S. Su DOE Review, 2004

Model Independent Study of DM collider searches J. Feng, F. Takayama (UC Irvine) - neutral WIMP Dark Matter (DM) relic density Annihilation cross section:  ( DM ! SM particle) Production cross section: Tevatron:  ( pp ! DM) LHC:  ( pp ! DM) LC:  ( e+e- ! DM) - DM: missing energy signal Much more difficult Irreducible background: +jet (or ) Production cross section: Tevatron:  ( pp ! DM+jet) LHC:  ( pp ! DM+jet) LC:  ( e+e- ! DM+) - S. Su DOE Review, 2004

Precision Study of SUGRA, GMSB and AMSB S. Heinemeyer (CERN), G. Weiglein (IPPP, Durham) - Tevatron/LHC/LC could measure sin2 and mW precisely SUGRA, GMSB and AMSB contribute differently to sin2 and mW GMSB SUGRA S. Su DOE Review, 2004

Phenomenology of Warped SUSY GUT Model C.W. Chiang (NCU), T. Han (U. Wisconsin), L.T. Wang (Harvard) - MSSM SUSY SU(5) GUT Extra-Dim 4D SUSY Goldberger, Nomura and Smith, PRD67, 075021 (2003) Nomura and Smith, PRD 68, 075003 (2003) How do we know it is warped SUSY GUT? observe SUSY particle observe GUT particle Rich particle spectra around TeV scale S. Su DOE Review, 2004

Phenomenology of Warped SUSY GUT Model C.W. Chiang (NCU), T. Han (U. Wisconsin), L.T. Wang (Harvard) - A321,Axy 321 q ~ lL lR ! ET + l ~ / xy, stable, track S. Su DOE Review, 2004

Propagation of High Energy Stau M. H. Reno(U. IOWA), I. Sarcevic (UA) - Long lifetime stau could be produced in high energy cosmic ray relatively small production cross section It could be detected in current/future neutrino telescope effective detection volume enhanced by its longer traveling distance Albuquerque, Burdman, Chacko, PRL92, 221802 (2004) Important to understand the energy loss of stau when it penetrates the earth Photonuclear effect Pair production Bremsstrahlung dominate S. Su DOE Review, 2004

MSSM Contribution to Precision Observables M. Ramsey-Musolf (Caltech) - SUSY contributes to both high (Z-pole) and low (below Z-pole) precision observables Oblique parameters for Z-pole observables are not good approximation when new physics is near EW scale. Systematic study of MSSM contribution to Z-pole observables Review paper on “Precision Supersymmetry” Z-pole and collider studies Neutral Current studies below the Z-pole Charge current universality and weak decay Flavor physics and CP violation Higgs physics S. Su DOE Review, 2004

Research and Collaborations - New candidate of dark matter: superWIMP J. Feng, F. Takayama (UC Irvine) Model independent study of collider DM searches Precision study of SUGRA, GMSB and AMSB S. Heinemeyer (CERN), G. Weiglein (IPPP, Durham) Propagation of high energy stau M. H. reno (U. of IOWA), I. Sarcevic (UA) Phenomenology of warped SUSY GUT model C.W. Chiang (NCU), T. Han (U. Wisconsin), L.T. Wang (Harvard) MSSM contribution to precision observables M. Ramsey-Musolf (Caltech) S. Su DOE Review, 2004