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!!