FNAL Theory FNAL Theory Beyond the Beyond the
Standard ModelStandard ModelJose SantiagoJose Santiago
DOE Annual Program Review 2006DOE Annual Program Review 2006
Theory Breakout SessionTheory Breakout Session
May 17, 2006May 17, 2006
OutlineOutline
Why BSM physics?Why BSM physics? BSM physics in the theory groupBSM physics in the theory group Overview of work from the groupOverview of work from the group
SupersymmetrySupersymmetry Extra Dimensions and String TheoryExtra Dimensions and String Theory CosmologyCosmology Extended Higgs and Gauge SectorsExtended Higgs and Gauge Sectors Little HiggsLittle Higgs
Why BSM Physics?Why BSM Physics?
SM describesSM describes
experimental data experimental data
to extreme precisionto extreme precision
It leaves important It leaves important
questions unansweredquestions unanswered
Why BSM Physics?Why BSM Physics?
Some open questionsSome open questions Electroweak Symmetry BreakingElectroweak Symmetry Breaking Hierarchies in NatureHierarchies in Nature New particles?New particles? Unification and Quantum gravityUnification and Quantum gravity
Good BSM theories:Good BSM theories: Answer some of these questionsAnswer some of these questions Are compatible with current experimentsAre compatible with current experiments Have phenomenological implications at Have phenomenological implications at
present/future colliderspresent/future colliders
BSM in the Theory GroupBSM in the Theory Group Staff membersStaff members (6/14) (6/14)
B. Bardeen, M. Carena, B. Dobrescu, C. Hill, B. Bardeen, M. Carena, B. Dobrescu, C. Hill, J. Lykken, C. Quigg J. Lykken, C. Quigg
Postdoctoral associatesPostdoctoral associates (7/12) (7/12) M.C. Chen, A. Freitas, J. Hubisz, E. Lunghi, M.C. Chen, A. Freitas, J. Hubisz, E. Lunghi,
O. Mena, J. Santiago, P. Skands O. Mena, J. Santiago, P. Skands Users and visitorsUsers and visitors
C. Albright, W.Y. Keung, S. Martin, T. TaitC. Albright, W.Y. Keung, S. Martin, T. Tait PublicationsPublications
Research Articles: Research Articles: 3737 Conference proceedings, lectures, ... Conference proceedings, lectures, ... 30+30+
BSM in the Theory GroupBSM in the Theory Group
Other activities:Other activities: New Phenomena GroupNew Phenomena Group (weekly informal (weekly informal
discussion)discussion) Conference organizationConference organization
Monte Carlo Tools for BSMMonte Carlo Tools for BSM TeV4LHCTeV4LHC
Latin-American Student programLatin-American Student program Contact with experimenters and particle Contact with experimenters and particle
astrophysics theory group astrophysics theory group
SUSY and Dark Matter at SUSY and Dark Matter at CollidersColliders LHC willLHC will probably probably findfind evidence of evidence of DM particlesDM particles
through missing momentum/energy analysesthrough missing momentum/energy analyses ILCILC willwill determine its properties in great detail, determine its properties in great detail,
making making ΏΏ(DM) computable(DM) computable
M. Carena, A. Finch, A. Freitas, C. Milstene, H. Nowak, A. Sopczak, PRD72 (‘05)
MSSM Higgs at Tevatron MSSM Higgs at Tevatron and LHCand LHC
Couplings to bb and Couplings to bb and are affected by radiative are affected by radiative corrections (encoded in corrections (encoded in bb))
M. Carena, S. Heinemeyer, C. Wagner, G. Weiglein, Eur. Phys. J. C45 (‘06)
Strong parameter dependence on the bb channel that is absent in the channel
Constraints from B physics are important for the analyses: (see T. Becher’s talk)
Physics of (two) UEDPhysics of (two) UED
UED: All fields living in the bulkUED: All fields living in the bulk KK Parity: only loop effects or pair KK Parity: only loop effects or pair
produced produced new statesnew states Natural Dark Matter candidateNatural Dark Matter candidate Mild bounds: MMild bounds: MCC~400 GeV~400 GeV
Two UED: Two UED:
Decays mainly to ttDecays mainly to tt
G. Burdman, B. Dobrescu, E. Ponton, JHEP 06
[hep-ph/0506334] and hep-ph/0601186
3 generations
Suppressed Proton Decay
Tevatron
LHC
M-theory M-theory compactificationscompactifications String theory: D3 branes String theory: D3 branes AdSAdS55xSxS55 RSRS M theory: M5 branes M theory: M5 branes AdSAdS77xSxS44
AdS7 AdS5xT2 AdS7 AdS5xT2 How does it compare to RS?How does it compare to RS?
Spectrum:Spectrum: RS-like: mn=1, 1.64, 2.26, 2.88 RS-like: mn=1, 1.64, 2.26, 2.88 (RS 1, 1.83, (RS 1, 1.83,
2.66, ...)2.66, ...)
T2 KK modes: mn=|n|/ŘT2 KK modes: mn=|n|/Ř Winding modes: O(TeV) Winding modes: O(TeV)
independently of R!!!independently of R!!!
R. Bao, J. Lykken, hep-ph/0509137
Revamped Braneworld Revamped Braneworld GravityGravity Unified description of braneworld Unified description of braneworld
gravity models:gravity models: (A)dS(A)dS44/AdS/AdS55 with arbitrary localized curvature with arbitrary localized curvature
termsterms
Allows to study phenomenology ofAllows to study phenomenology of RS: RS: Gauge hierarchy and collider physicsGauge hierarchy and collider physics DGP: Selfacceleration of the Universe and DGP: Selfacceleration of the Universe and
dark energy dark energy New Models: New Models: Ghostless DGP?Ghostless DGP?
R. Bao, M. Carena, J. Lykken, M. Park, J.S., PRD72 (‘05) and PRD73 (‘06)
Oscillating cosmologiesOscillating cosmologies
Why now? Why now? Not special if dark energy EoS oscilatesNot special if dark energy EoS oscilates
Can produce inflationCan produce inflation Passes cosmological testsPasses cosmological tests Tension with structure Tension with structure
formation (b < 0.4)formation (b < 0.4) ~5% of the time Universe ~5% of the time Universe
looks like ours todaylooks like ours today
G. Barenboim, C. Quigg, O. Mena, PRD71 (’05) and JCAP0604 (’06) G. Barenboim, J. Lykken PLB633 (’06)
SuperNovae
CMB
Global fit with triplet Global fit with triplet HiggsHiggs 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
Other worksOther works Flavor of a Little Higgs model with T-parity,Flavor of a Little Higgs model with T-parity, J. J.
HubiszHubisz, S.J. Lee, G. Paz, hep-ph/0512169 see T. Becher’s talk, S.J. Lee, G. Paz, hep-ph/0512169 see T. Becher’s talk Anomalies, Chern-Simons terms and chiral Anomalies, Chern-Simons terms and chiral
delocalization in extra dimensions, delocalization in extra dimensions, C. HillC. Hill, PRD73 (06), PRD73 (06) Effective description of brane terms in extra Effective description of brane terms in extra
dimensions, dimensions, F. del Aguila, M. Perez-Victoria, F. del Aguila, M. Perez-Victoria, J. S.J. S. hep-ph/0601222hep-ph/0601222
Constraining inverse curvature gravity with Constraining inverse curvature gravity with supernovae, supernovae, O. MenaO. Mena, , J. SJ. S., J. Weller, PRL96 (06)., J. Weller, PRL96 (06)
Anomaly-free sets of fermions, Anomaly-free sets of fermions, P. Batra, P. Batra, B. DobrescuB. Dobrescu, , hep-ph/0510181hep-ph/0510181
Analysis of enhanced tan corrections in MFV GUT Analysis of enhanced tan corrections in MFV GUT scenarios, scenarios, E. LunghiE. Lunghi, W. Porod, O. Vives, W. Porod, O. Vives
FCNC at NLO in Little Higgs Models, FCNC at NLO in Little Higgs Models, B. BardeenB. Bardeen, A. , A. Buras, Buras, in progressin progress
ConclusionsConclusions
Physics Physics BSMBSM is crucial to understand is crucial to understand the world around usthe world around us
It is a It is a richrich and and complexcomplex field field Experiment will help disentangle Experiment will help disentangle
which is the model(s) of new physicswhich is the model(s) of new physics A big deal of A big deal of workwork and and ingenuityingenuity will will
be necessarybe necessary Fermilab is the perfect place for itFermilab is the perfect place for it!!