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FNAL Theory Beyond the Standard Model

FNAL Theory Beyond the Standard Model. Jose Santiago DOE Annual Program Review 2006 Theory Breakout Session May 17, 2006. Outline. Why BSM physics? BSM physics in the theory group Overview of work from the group Supersymmetry Extra Dimensions and String Theory Cosmology

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FNAL Theory Beyond the Standard Model

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  1. FNAL Theory Beyond the Standard Model Jose Santiago DOE Annual Program Review 2006 Theory Breakout Session May 17, 2006

  2. Outline • Why BSM physics? • BSM physics in the theory group • Overview of work from the group • Supersymmetry • Extra Dimensions and String Theory • Cosmology • Extended Higgs and Gauge Sectors • Little Higgs

  3. Why BSM Physics? • SM describes experimental data to extreme precision • It leaves important questions unanswered

  4. Why BSM Physics? • Some open questions • Electroweak Symmetry Breaking • Hierarchies in Nature • New particles? • Unification and Quantum gravity • Good BSM theories: • Answer some of these questions • Are compatible with current experiments • Have phenomenological implications at present/future colliders

  5. BSM in the Theory Group • Staff members (6/14) • B. Bardeen, M. Carena, B. Dobrescu, C. Hill, J. Lykken, C. Quigg • Postdoctoral associates (7/12) • M.C. Chen, A. Freitas, J. Hubisz, E. Lunghi, O. Mena, J. Santiago, P. Skands • Users and visitors • C. Albright, W.Y. Keung, S. Martin, T. Tait • Publications • Research Articles: 37 • Conference proceedings, lectures, ... 30+

  6. BSM in the Theory Group • Other activities: • New Phenomena Group (weekly informal discussion) • Conference organization • Monte Carlo Tools for BSM • TeV4LHC • Latin-American Student program • Contact with experimenters and particle astrophysics theory group

  7. SUSY and Dark Matter at Colliders M. Carena, A. Finch, A. Freitas, C. Milstene, H. Nowak, A. Sopczak, PRD72 (‘05) • LHC will probably find evidence of DM particles through missing momentum/energy analyses • ILCwill determine its properties in great detail, making Ώ(DM) computable

  8. MSSM Higgs at Tevatron and LHC M. Carena, S. Heinemeyer, C. Wagner, G. Weiglein, Eur. Phys. J. C45 (‘06) • Couplings to bb and t+t- are affected by radiative corrections (encoded in t,b) • Strong parameter dependence on the bb channel that is absent in the  channel

  9. Constraints from B physics are important for the analyses: (see T. Becher’s talk)

  10. Physics of (two) UED G. Burdman, B. Dobrescu, E. Ponton, JHEP 06 [hep-ph/0506334] and hep-ph/0601186 • UED: All fields living in the bulk • KK Parity: only loop effects or pair produced new states • Natural Dark Matter candidate • Mild bounds: MC~400 GeV • Two UED: • Decays mainly to tt • 3 generations • Suppressed Proton Decay

  11. Tevatron LHC

  12. M-theory compactifications R. Bao, J. Lykken, hep-ph/0509137 • String theory: D3 branes AdS5xS5RS • M theory: M5 branes AdS7xS4 • AdS7 AdS5xT2 How does it compare to RS? • Spectrum: • RS-like: mn=1, 1.64, 2.26, 2.88 (RS 1, 1.83, 2.66, ...) • T2 KK modes: mn=|n|/Ř • Winding modes: O(TeV) independently of R!!!

  13. Revamped Braneworld Gravity R. Bao, M. Carena, J. Lykken, M. Park, J.S., PRD72 (‘05) and PRD73 (‘06) • Unified description of braneworld gravity models: • (A)dS4/AdS5 with arbitrary localized curvature terms • Allows to study phenomenology of • RS: Gauge hierarchy and collider physics • DGP: Selfacceleration of the Universe and dark energy • New Models: Ghostless DGP?

  14. Oscillating cosmologies G. Barenboim, C. Quigg, O. Mena, PRD71 (’05) and JCAP0604 (’06) G. Barenboim, J. Lykken PLB633 (’06) • Why now? Not special if dark energy EoS oscilates • Can produce inflation • Passes cosmological tests • Tension with structure formation (b < 0.4) • ~5% of the time Universe looks like ours today

  15. SuperNovae CMB

  16. Global fit with triplet Higgs M.C. Chen, S. Dawson, T. Krupovnickas, hep-ph/0604102 SM: Z prefers heavy Higgs Z increases with mt TM: Z prefers light Higgs Z decreases with mt mass of the lightest neutral Higgs 100 ~ 200 GeV

  17. Other works • Flavor of a Little Higgs model with T-parity,J. Hubisz, S.J. Lee, G. Paz, hep-ph/0512169 see T. Becher’s talk • Anomalies, Chern-Simons terms and chiral delocalization in extra dimensions, C. Hill, PRD73 (06) • Effective description of brane terms in extra dimensions, F. del Aguila, M. Perez-Victoria, J. S. hep-ph/0601222 • Constraining inverse curvature gravity with supernovae, O. Mena, J. S., J. Weller, PRL96 (06) • Anomaly-free sets of fermions, P. Batra, B. Dobrescu, hep-ph/0510181 • Analysis of enhanced tan corrections in MFV GUT scenarios, E. Lunghi, W. Porod, O. Vives • FCNC at NLO in Little Higgs Models, B. Bardeen, A. Buras, in progress

  18. Conclusions • Physics BSM is crucial to understand the world around us • It is a rich and complex field • Experiment will help disentangle which is the model(s) of new physics • A big deal of work and ingenuity will be necessary • Fermilab is the perfect place for it!

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