c.balázs- the origin of matter

8/3/2019 C.Balzs- The origin of matter

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C. Balzs, Argonne National Laboratory The origin of matter Fermilab, July 13 2005 1/22


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The origin of matter

Neutralinos as dark matter Electroweak baryogenesis The supersymmetric origin of matter

C.Balzs, M.Carena, A. Menon, D.E.Morrissey, C.E.M.WagnerPRD71 075002 (`05)

C.Balzs, M.Carena, C.E.M.Wagner PRD70 015007 (`04)

http://www.hep.anl.gov/balazs/Physics/Talks/2005/07-FNAL



3/22

Matter E balance a 'la FRW: r

rC=Wm +WL +Wk rC =3H02/8pGN , H0=714km/s/Mpc

the cosmic puzzle

SNe,WMAP,SDSS: Wm~ 0.25 WL~ 0.75 Wtot~ 1.0



4/22

Matter E balance a 'la FRW: rrC =Wm +WL +Wk rC =3H02/8pGN , H0=714km/s/Mpc

Bahcall et al. 1999

SNe,WMAP,SDSS: Wm = 0.270.04WL = 0.730.04Wtot = 1.020.02 direct, independent, precise, consistent observations robust result



5/22

Dark matter Matter content: Wm=Wb +Wr +Wn +WDM with Wn, Wr < 0.015

PDB 2004

BBN&CMB, cosmic concordance: Wb = 0.0440.004flWDM = 0.220.04 Stable, non-baryonic, non-relativistic matter new physics



6/22

Cold dark matter Galactic structure requires cold dark matter CDM clumps first, attracting matter later cfcp.uchicago.edu/lss/filaments.htm

Maroto,Ramirez astro-ph/0409280C. Balzs, Argonne National Laboratory The origin of matter Fermilab, July 13 2005 6/22


7/22

Cold dark matter? (An astronomer's view)

Luminous matter Dark matterC. Balzs, Argonne National Laboratory The origin of matter Fermilab, July 13 2005 7/22


8/22

Cold dark matter = neutralinoZ 1 properties stable in most models neutral, non - baryonic mass ~ EW scale

Z 1 admixture mass eigenstateZ 1 = n11 B +n1i H i +n13 W 3 Bino : seff small

WZ 1 large Higgsino : seff large

WZ 1 small Wino: seff very large

WZ 1tiny 100 300 500 700 900m HGeVL100

300

500

700

900

M2

H

VeG

L

M1= 500 GeV

Bino

Wino

Higgsino

Balzs 2005



9/22

Cold dark matter = neutralinoZ 1 properties stable in most models neutral, non - baryonic mass ~ EW scale

Z 1 admixture mass eigenstateZ 1 = n11 B +n1i H i +n13 W 3 Bino : seff small

WZ 1 large Higgsino : seff large

WZ 1 small Wino: seff very large

WZ 1tiny Kolb, Turner 1989



10/22

Anti-matter - What's the matter with it?



11/22

Anti matter Matter content: Wm=Wb +Wr +Wn +WDM with Wn, Wr < 0.015

PDB 2004

BBN&CMB, cosmic concordance: Wb = 0.0440.004flWDM = 0.220.04 Stable, non-baryonic, non-relativistic matter new physics



12/22

Matter-anti-matter asymmetry



13/22

Anti-matter: Electroweak baryogenesis in the MSSM Possible if1. anomalous B HL2. enough CP

m, M i and or A t hasHrelativeL complex phases3. EW phase transitionstrongly 1storder constraints on stop sectorm t1 < m t , m t2 t 1TeV,0.3 < Xt mQ 3 < 0.5,constraints on Higgs sectormh d 120 GeV Carena, Seco, Quiros, Wagner 2002

scenario is strongly constrained by LEP 2: 114.4 GeV < mh Does EWBG survive the stringent WMAP limits?



14/22

The origin of matterTop - down approach pick a model show viabalility motivated by aesthetics example : mSuGra

Balzs 2004

Bottom - up approach start from data narrow theory motivated by experimental data example : MSSM

Balzs, Carena, Menon, Morrissey, Wagner 2004C. Balzs, Argonne National Laboratory The origin of matter Fermilab, July 13 2005 14/22


15/22

The supersymmetric origin of matter Can the baryon asymmetry & right amount of neutralino dark matter

be simultaneously generated in the MSSM? Davidson et al., Boehm et al. 1999

Balzs,Carena,Menon,Morrissey,Wagner 2004C. Balzs, Argonne National Laboratory The origin of matter Fermilab, July 13 2005 15/22


16/22

The supersymmetric origin of matter t1-Z 1 coannihilation lowers the neutralino relic densityto agree with WMAP where m t1~ mZ 1



17/22

The supersymmetric origin of matter Annihilation via the h0(A 0) resonance lowers the neutralino relic density

to agree with WMAP where 2mZ 1~ mh0HA 0L



18/22

Collider implications Ayres' talk If t1 cZ 1 dominantconsiderable part ofpara. space observable

at Tevatron depending on L If t1 bZ 1W ormt1 d 1.25 mZ 1HHiggs resonance ort1 - Z 1 coannihilationLdifficult at Tevatron

LHC : similar situation ILC expected to coveressentially all regions Balzs 2005



19/22

Direct CDM detection experiments Future nucleon-WIMP detection experiments will probe considerable part of allregions (including t1-Z 1 coannihilation)



20/22

Electron electric dipole moment e-EDM is the most sensitive probe of the model: EWBG requires complex phases complex phases generate EDM EWBG requires: 2x10-28e cm d|de| Experimental limit: |de|< 1.6x10-27e cm

Balzs,Carena,Menon,Morrissey,Wagner 2004 full parameter space probed if e-EDM limits improve by factor ~10-100 except if: accidental cancellations, mA > 1 TeV, or nMSSM ...C. Balzs, Argonne National Laboratory The origin of matter Fermilab, July 13 2005 20/22


21/22

Summary Cold dark matter seems to be out there and

neutralinos are excellent candidates for it Baryogenesis explains the baryon asymmetry based on the electroweak phase transition in the MSSM simultaneous electroweak baryogenesis and neutralino cold dark matter

is viable in the MSSMfl all matter might just originate from SUSY! Does matter have a supersymmetric origin? e-EDM measurements are the most sensitive probes of this model Tevatron has a good chance to find the light stop, but even the Large Hadron Collider will not cover the full para. space International Linear Collider covers most of the parameter region direct dark matter searches can find the neutralino in this scenario complementary collider & dark matter searches together will uncover...



22/22

Summary Cold dark matter seems to be out there and

neutralinos are excellent candidates for it Baryogenesis explains the baryon asymmetry based on the electroweak phase transition in the MSSM simultaneous electroweak baryogenesis and neutralino cold dark matter

is viable in the MSSMfl all matter might just originate from SUSY! Does matter have a supersymmetric origin? e-EDM measurements are the most sensitive probes of this model Tevatron has a good chance to find the light stop, but even the Large Hadron Collider will not cover the full para. space International Linear Collider covers most of the parameter region direct dark matter searches can find the neutralino in this scenario complementary collider & dark matter searches together will uncover...

the origin of matterC. Balzs, Argonne National Laboratory The origin of matter Fermilab, July 13 2005 22/22

c.balázs- the origin of matter

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