Edm Lhc Ewb09a
-
Upload
subramaniyan-mahendiran -
Category
Documents
-
view
215 -
download
0
Transcript of Edm Lhc Ewb09a
-
7/29/2019 Edm Lhc Ewb09a
1/41
EDMs, the LHC, and theOrigin of Matter
M.J. Ramsey-Musolf
Wisconsin-MadisonQuickTime and aTIFF (Uncomp ressed) decompresso
are needed to see this pic ture.
http://www.physics.wisc.edu/groups/particle-theory/
NPACTheoretical Nuclear, Particle, Astrophysics & Cosmology
NC State Seminar, March 2009
-
7/29/2019 Edm Lhc Ewb09a
2/41
What is the origin of baryonic matter ?
Cosmic Energy Budget
Baryons
Dark Matter
Dark Energy
Explaining non-zerorBrequires CP-violationand a scalar sector beyond those of the
Standard Model(assuming inflation setrB=0)
What are the implications of Higgs searchesat LHC and Higgs studies at ILC for
explaining the baryon asymmetry ?
What are thequantitativeimplications of newEDM experiments for explaining the origin of
the baryonic component of the Universe ?
Leptogenesis: discoverthe ingredients:LN- & CP-violation in neutrinos
Weak scale baryogenesis:test experimentally:EDMs& Higgs Boson Searches
D. Chung Wisconsin
V. Cirigliano LANLB. Garbrecht Wisconsin
C. Lee LBL
Y. Li Wisconsin
S. Profumo UC Santa Cruz
S. Tulin Caltech
G. Shaugnessy Wisconsin
PRD 71: 075010 (2005)PRD 73: 115009 (2006)JHEP 0607:002 (2006 )PRD 78:075009 (2008)PRL 102:061301 (2009)
PLB 673: 95 (2009)
Baryogenesis & EDMs Higgs Phenomenology
PRD 75: 037701 (2007)JHEP 0807:010
(2007) PRD 77: 035005(2008) PRD79: 015018 (2009)
V. Barger Wisconsin
P. Langacker IASM. McCaskey Wisconsin
D. OConnell IAS
S. Profumo UC Santa Cruz
G. Shaugnessy ANL/Northwestern
M. Wise Caltech
-
7/29/2019 Edm Lhc Ewb09a
3/41
Outline
I. Baryogenesis: General Features
II. Preview of main results
III. Computing YBsystematically:progress & challenges
IV. Illustrative phenomenology inMSSM: EDMs & the LHC
-
7/29/2019 Edm Lhc Ewb09a
4/41
I. Baryogenesis: General Features
-
7/29/2019 Edm Lhc Ewb09a
5/41
Baryogenesis: Ingredients
Anomalous B-violating processes
Prevent washout by inverse processes
Sakharov Criteria
B violation
C & CP violation
Nonequilibriumdynamics
Sakharov, 1967
SM Sphalerons:
SM CKM CPV:
SM EWPT:
EDMs
LHC: Scalars
-
7/29/2019 Edm Lhc Ewb09a
6/41
EW Baryogenesis: Standard Model
Weak Scale Baryogenesis
B violation
C & CP violation
Nonequilibriumdynamics
Sakharov, 1967
Anomalous Processes
Different vacua: D(B+L)= DNCS
A
Kuzmin, Rubakov, ShaposhnikovMcLerran,
Sphaleron Transitions
W
W
J
B
qL
-
7/29/2019 Edm Lhc Ewb09a
7/41
EW Baryogenesis: Standard Model
Weak Scale Baryogenesis
B violation
C & CP violation
Nonequilibriumdynamics
Sakharov, 1967
mt4
MW4
mb4
MW4
mc2
MW2
ms2
MW2 31013
Js12s13s23c12c132 c23sin13
(2.88 0.33) 105
F
F
Increasing mh
1st order 2nd order
CP-violation too weak
No EWPT
Shaposhnikov
-
7/29/2019 Edm Lhc Ewb09a
8/41
Baryogenesis: New Electroweak Physics
Weak Scale Baryogenesis
B violation
C & CP violation
Nonequilibrium
dynamics
Sakharov, 1967
ne
(x)
Unbroken phase
Broken phaseCP Violation
Topological transitions
1st order phase transition
e
ne
ne
ne
g
g
e
e
Z0
Z0
Is it viable?
Can experiment constrain it?
How reliably can we compute it?
Quantum Transport
CPV
Chem Eq
R-M et al
Is it viable?
Can experiment constrain it?
How reliably can we compute it?
Theoretical Issues:Strength of phase transition (Higgs
sector) Bubble dynamics (numerical)
Transport at phase boundary (non-eq QFT)
EDMs: many-body physics & QCD
Systematic baryogenesis: SD
equations + power counting
Veff(,T):Requirements on Higgssector extensions & exptl probes
EDM sensitivity to CPVphases relevant for EWB:leptonic, hadronic, & nuclear
-
7/29/2019 Edm Lhc Ewb09a
9/41
EDMs: New CPV?
SM backgroundwell below newCPV expectations
New expts: 102to103more sensitive
CPV needed forBAU?
CKM
-
7/29/2019 Edm Lhc Ewb09a
10/41
Baryogenesis: EDMs & Colliders
QuickTime and a
decompressorare needed to s ee this picture.
QuickTime and a
decompressorare needed to see this picture.
Cosmology LHC
EDMs
Theory
Theory
Implications
-
7/29/2019 Edm Lhc Ewb09a
11/41
EDMs & EWB: What We May Learn
Present n-EDM limitProposed n-EDM limit
?
Matter-AntimatterAsymmetry inthe Universe
Better theory ?New theory ?Leptogenesis ?
n-EDM has killedmore theories than
any othersingleexperiment
-
7/29/2019 Edm Lhc Ewb09a
12/41
II. Preview: Main Results
-
7/29/2019 Edm Lhc Ewb09a
13/41
MSSM Baryogenesis: EDMs & LHC
Resonant EWB
Present de
LEP II excl
LHC reach
QuickTime and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Prospective dn
Cirigliano, Profumo, R-M
+-driven EWB
0-driven EWB
-
7/29/2019 Edm Lhc Ewb09a
14/41
Probing the CPV Phase Structure
Arg(M1b*) = Arg(M2b
*)/
QuickTime and adecompressor
are needed to see t his picture.
Res EWB notcompatible with dn
QuickTime and a
decompressorare needed to see this p icture.
Res & non-res
EWB compatiblewith future dn
QuickTime and a
decompressorare needed to s ee this picture.
Li, Profumo, Ramsey-Musolf
Compatible with
observed YB
New 2-loop EDM calc
-
7/29/2019 Edm Lhc Ewb09a
15/41
YB& Particle Spectrum: LHC & g-2
QuickTime and adecompressor
are needed to s ee this picture.
Chung,Garbrecht, Ramsey-Musolf, Tulin
Small tan
Large tan
YBdependence on third generation
sparticle masses & tan
Magnitude & sign of YBsensitive to third generationsfermion spectrum for given CPV phase
-
7/29/2019 Edm Lhc Ewb09a
16/41
III. Computing YB
-
7/29/2019 Edm Lhc Ewb09a
17/41
Systematic Baryogenesis
Goal:Derive dependence of YB
on parametersLnewsystematically (controlled approximations)
Parameters inLnewBubble & PT
dynamics
CPV phases
Departure from equilibrium
Earliest work: QM scattering & stat mech
New developments: non-equilibrium QFT
-
7/29/2019 Edm Lhc Ewb09a
18/41
Systematic Baryogenesis
Unbroken phase
Topological transitions
Broken phase
1st order phase transition
(x)
rBt
D2rB WSFWS(x) nL (x)RrB
FWS(x) ->0 deep inside bubble
nL produced in wall& diffuses in front
Cohen, Kaplan,
NelsonJoyce, Prokopec,Turok
snow
W W
JB
qL
nL produced on short timescale compared to WS nL to
rBconversion
-
7/29/2019 Edm Lhc Ewb09a
19/41
Quantum Transport & Baryogenesis
Particle Propagation: Beyond familiar (Peskin) QFT
0IN
0OUT
LI
Assumptions: 1. Evolution is adiabatic2. Spectrum is non-degenerate
3. Density is zero
ne
(x)
Electroweak Baryogenesis 1. Evolution is non-adiabatic:vwall> 0 -> decoherence
2. Spectrum is degenerate:
T > 0 -> Quasiparticles mix3. Density is non-zero
-
7/29/2019 Edm Lhc Ewb09a
20/41
Quantum Transport & Baryogenesis
ne
(x)
Electroweak Baryogenesis 1. Evolution is non-adiabatic:
vwall> 0 -> decoherence
2. Spectrum is degenerate:
T > 0 -> Quasiparticles mix3. Density is non-zero
Scale Hierarchy:
Fast, but not too fast
Hot, but not too hot
Dense, but not too dense
d=vw(k /w)
-
7/29/2019 Edm Lhc Ewb09a
21/41
Quantum Transport Equations
= + +
G
G0
+
G0
G0
Expandind,p,
Currents
CP violating
sourcesLinks CP violation in Higgs
and baryon sectors
Chiral
Relaxation
Strongsphalerons
Producing nL = 0
SCPV
M, H , Y, SS
Xj(X) d
3z dz0 (X,z)G(z,X) G(X,z) (z,X)
X0ApproximationsNeglect O(3) terms
Others under scrutiny
R-M, Chung, Tulin,
Garbrecht, Lee,Cirigliano
From S-D Equations:SCPV
M, H, Y
Riotto, Carena et al, R-M et al,Konstandin et al
R-M et al
Objectives:
Determine param dep of SCPVand alls and not just that of SCPV
Develop general methods for anymodel with new CPV
Quantify theor uncertainties
Y>> other rates? (No)
Majorana fermions ?
(densities decouple) Particle-sparticle eq?
Vev resummation ?
-
7/29/2019 Edm Lhc Ewb09a
22/41
Our Work Applied to MSSM
Resonant enhancements in chiralrelaxation offsets resonant CPV
Three-body contributions enhance
Yukawa rates Large tan (g-2) regime quenches
YBand introduces strongdependence on SUSY spectrum
EDM constraints imply non-universalgaugino phases
-
7/29/2019 Edm Lhc Ewb09a
23/41
Illustrative Study: MSSM
Neutralino Mass Matrix
M1
-M2
-mZ cossinqW mZ coscosqWmZ sinsinqW -mZ sinsinqW 0
0
00
--mZ cossinqW mZ coscosqWmZ sinsinqW -mZ sinsinqWMN =
Chargino Mass Matrix
M2
MC =
cos2mW
sin2mW T
-
7/29/2019 Edm Lhc Ewb09a
24/41
Baryon Number: MSSM
YB rBs
F1 sin F2 sin( A )
F1S
H
CPV
WS
diff
F2St
CPV
WS
diff
Higgsinos SquarksImpt to computeboth num and denconsistently
F2: EWPO imply
suppression
-
7/29/2019 Edm Lhc Ewb09a
25/41
Resonant CPV & Relaxation
SH
R
(GeV)
(GeV)
MW
Huet &Nelson
MW
CP violation Relaxation
F1S
H
CPV
WS
diff
-
7/29/2019 Edm Lhc Ewb09a
26/41
Baryon Number & Y
Cirigliano, Lee, R-M, Tulin
gH
tLtLtR
Joyce, Prokopec, Turok
YB rBs
F1 sin F2 sin( A )
YB rB
sF1 sin F2 sin( A )
ourY
previous Y
-
7/29/2019 Edm Lhc Ewb09a
27/41
Baryogenesis: tan effectsTransport, Spectrum, & EDMs
QuickTime and a
decompressorare needed to s ee this picture.
QuickTime and a
decompressorare needed to see this picture.
Canceling t,b (s)quarkcontributions
Enhanced light staucontributions
QuickTime and adecompressor
are needed to see this picture.
Small tan:nleft=5Q+4T
QuickTime and adecompressor
are needed to see this picture.
+ SUSYChung,Garbrecht, R-M, Tulin: PRL 102:061301 (2009)
QuickTime and a
decompressorare needed to see this picture.
Small tannegligible Yb,
effectstan=20: impt Yb,
effectsSmall tan: strong sphaleronsinduce 1st& 2ndgen quarkcontributions to counteract 3rdgeneration chiral asymmetry
Large tan: 3rdgeneration chiralasymmetry vanishes: no strongsphaleron-induced 1st& 2ndgenquark contributions
-
7/29/2019 Edm Lhc Ewb09a
28/41
IV. Phenomenology: EDMs, LHC, & YB
-
7/29/2019 Edm Lhc Ewb09a
29/41
EDMs: Complementary Searches
f
0
f
f
g
q
0
q
q
ElectronImprovementsof 102 to 103
Neutron
f
0
f
f
Neutral
Atoms
g
q
0
q
q
Deuteron
g
q
0
q
q
N
e
QCD
QCD
QCD
-
7/29/2019 Edm Lhc Ewb09a
30/41
EDMs: Theory
g
q
0
q
q
f
0
f
f
ElectronImprovementsof 102 to 103
Neutron
f
0
f
f
Neutral
Atoms
g
q
0
q
q
Deuteron
g
q
0
q
q
N
e
QCD
QCD
QCD
n
p
Nuclear Schiff Moment
Nuclear EDM:Screened in atoms
Neutron EDM from LQCD:
Two approaches:
Expand inq& average overtopological sectors (Blum et al,Shintani et al)
ComputeDE for spin up/downnucleon in backgroundEfield
(Shintani et al)
mN=2.2 GeV
QCD SR (Pospelov et al)
Hadronic couplings
Pospelov et al:
PCAC + hadmodels & QCD SR
ChPT for dn: van Kolck et al
Schiff Screening
Atomic effect fromnuclear finite size:Schiff moment
-
7/29/2019 Edm Lhc Ewb09a
31/41
EDMs & Schiff Moments
f
0
f
f
g
q
0
q
q
One-loop
EDM: q, l, n Chromo-EDM: q, n
Dominant innuclei & atoms
Engel & de Jesus:Reduced isoscalar sensitivity (qQCD)
Schiff Moment in199Hg Nuclear & hadron structure
Liu et al:New formulation of Schiff operator
+
New nuclear calcs needed
-
7/29/2019 Edm Lhc Ewb09a
32/41
One Loop EDMs & Baryogenesis
g
q
0
q
q
f
0
f
f
ne
(x)
q , W, B , Hu,d
T ~ TEW
Resonant Non-resonantCirigliano, Lee,Tulin, R-M
Futured
ed
nd
A
-
7/29/2019 Edm Lhc Ewb09a
33/41
EDMs in SUSY
f
0
f
f
g
q
0
q
q
One-loop
EDM: q, l, n Chromo-EDM: q, n
Dominant innuclei & atoms
-
7/29/2019 Edm Lhc Ewb09a
34/41
EDMs in SUSY
f
0
f
f
g
q
0
q
q
One-loop
EDM: q, l, n Chromo-EDM: q, n
Dominant innuclei & atoms
Two-loop
EDM only: no chromo-EDM
g
g
g
Weinberg: small matrix els
Decouple in large limit
-
7/29/2019 Edm Lhc Ewb09a
35/41
EDM constraints & SUSY CPV
AMSB: M1
~ 3M2
Baryogenesis
LEP II Exclusion
Two loop de
Cirigliano,
Profumo, R-MSUGRA: M
2
~ 2M1
| sin | > 0.02
| de, dn| > 10-28e-cm
M < 1 TeV
Arg(M1b*) = Arg(M2b
*)
+-driven EWB
0-driven EWB
-
7/29/2019 Edm Lhc Ewb09a
36/41
MSSM Baryogenesis: EDMs & LHC
baryogenesis
Present de
LEP II excl
LHC reach
QuickTime and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Prospective dn
Cirigliano, Profumo, R-M
+-driven EWB
0-driven EWB
-
7/29/2019 Edm Lhc Ewb09a
37/41
EDMs in SUSY: Full Two-Loop
Higgs Boson Masses
QuickTime and a
decompressorare needed to s ee this picture.
QuickTime and adecompressor
are needed to see this picture.
QuickTime and a
decompressorare needed to see t his picture.
Li, Profumo, R-M: PRD 78:075009(2008)
QuickTime an d a
decompressorare needed to s ee this picture.
WH Loops dominate for neutron &comparable toH, A for electron
QuickTime and a
decompressorare needed to see this picture.
mA=300 GeV, =300 GeV, M2=2M1=290 GeV
-
7/29/2019 Edm Lhc Ewb09a
38/41
EDMs in SUSY: Full Two-Loop
QuickTime and a
decompressorare needed to see this picture.
Higgs Boson Masses
Stronger limits onCPV for lightHiggses & large tan
QuickTime and a
decompressorare needed to see this picture.
Arg(M1b*) = Arg(M2b
*)
-
7/29/2019 Edm Lhc Ewb09a
39/41
Baryogenesis: EDMs & LHC
QuickTime and a
decompressorare needed to s ee this picture.
Higgs Boson MassesQuickTime and a
decompressorare needed to see this picture.
Stronger limits onCPV for lightHiggses & large tan
QuickTime and a
decompressorare needed to see this picture.
Examples w/ mstop= 125 GeV,mA=200 GeV:tan=15, sin=0.05; tan~5, sin=0.1
Large tan(g-2) & universal gauginoCPVchallenging for MSSM EWB
QuickTime an d a
decompressorare needed to see this picture.
-
7/29/2019 Edm Lhc Ewb09a
40/41
EDMs & EWB: Non-universal phases
Arg(M1b*) = Arg(M2b
*)/
QuickTime and a
decompressorare needed to see this picture.
Weak dependence ofde, dnon Arg(M1b
*)
QuickTime and adecompressor
are needed to see t his picture.
Res EWB notcompatible with dn
QuickTime and a
decompressorare needed to see this p icture.
Res & non-res
EWB compatiblewith future dn, lightmA, & moderatetan
Li, Profumo, R-M: PLB673:95 (2009)
-
7/29/2019 Edm Lhc Ewb09a
41/41
Summary
EWB remains a viable and testablescenario for explaining the cosmicbaryon asymmetry
We are making progress in refining YB& EDM computations with reducedtheoretical uncertainties
Input from EDM searches, colliderstudies, & theory needed to addressthe origin of matter problem