fundamental symmetries & neutrinos in nuclear sciencepeople.umass.edu/mjrm/pdfs/doe mrm...
TRANSCRIPT
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Fundamental Symmetries &
Neutrinos in Nuclear Science
M.J. Ramsey-Musolf
Wisconsin-Madison
http://www.physics.wisc.edu/groups/particle-theory/
NPACTheoretical Nuclear, Particle, Astrophysics & Cosmology
DOE , May 2010
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Outline
1. Context: Fundamental Symmetries &
Neutrinos in Nuclear Physics
2. Challenges for the new Standard Model
3. The role of the “precision frontier”
4. CPV & the origin of baryonic matter
5. CP & T: EDMs
• Supersymmetry as an illustration
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Low Energy Precision Tests : the
Standard Model
Observation of
parity-violation in60Co -decay: LH
nature of weak int
Searches for
neutron EDM: tinyQCD parameter:
axions?
Measurement of PV
asymmetry in eD scattering:
SU(2)LxU(1)Y prediction for
neutral currents
Measurements ofsuperallowed nuclear -
decay: most precise
determination of quark
mixing parameter
What are the symmetries of the “new Standard Model” ?
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Rare Processes: Experiments
EDM Searches
• nucleon
• atoms
• leptons
0 Searches
• Cuore
• Exo
• Majorana
• SNO +
CLFV Searches
• mu2e
• PRIME
• EIC
Dark Matter Searches
• CLEAN
• WARP
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Precision Tests: Experiments
Weak Decays
• n decay correlations
• nuclear decay
• pion decays
• muon decays
PV Electron Scattering
• Q-Weak
• 12 GeV Moller
• PV DIS
Muons
• gμ-2
• μA->eA
Neutrinos
• oscillations
• & decay
Torsion Balances
• Equiv Prin Tests
• Non-grav forces
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EW Probes of QCD: Experiments
Hadronic PV
• FNPB/SNS
• NIST
PV Electron Scattering
• SAMPLE, G0,
HAPPEX, PVA4
• PREX
• PV DIS
EIC
•PVDIS
• CC DIS
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• Why is there now more visible matter
than antimatter in the universe?
• What is the nature of the neutrinos,
what are their masses, and how have
they shaped the evolution of the
cosmos ?
• What are the unseen forces that were
present at the dawn of the universe but
disappeared from view as it evolved ?
Scientific Questions
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Challenges for the New Standard Model
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Symmetries & Cosmic History
Standard Model Universe
EW Symmetry
Breaking: Higgs ?
New Forces ?
QCD:
n+p nuclei
QCD:
q+g n,p…
Astro: stars,
galaxies,..
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Symmetries & Cosmic History
Standard Model Universe
EW Symmetry
Breaking: Higgs ?
New Forces ?
to explain the microphysics of
the present universe
It utilizes a simple and elegant
symmetry principle
SU(3)c x SU(2)L x U(1)Y
• Big Bang Nucleosynthesis
(BBN) & light element
abundances
• Weak interactions in stars
& solar burning
• Supernovae & neutron
stars
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Symmetries & Cosmic History
Standard Model Universe
EW Symmetry
Breaking: Higgs ?
New Forces ?
How is electroweak symmetry broken?
How do elementary particles get mass ?
Puzzles the St’d Model may or
may not solve:
SU(3)c x SU(2)L x U(1)Y
U(1)EM
• Non-zero vacuum
expectation value of
neutral Higgs breaks
electroweak sym and
gives mass:
• Where is the Higgsparticle?
• Is there more thanone?
CERN
Large Hadron Collider
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Symmetries & Cosmic History
Standard Model Universe
EW Symmetry
Breaking: Higgs ?
New Forces ?
Puzzles the Standard Model can’t solve
1. Origin of matter
2. Unification & gravity
3. Weak scale stability
4. Neutrinos
What are the symmetries(forces) of the earlyuniverse beyond those ofthe SM?
SUSY ?
GUTS ?
Extra Dims ?WR
WL*
WL
~
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The Role of the Precision Frontier
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Searching for Symmetries of the New SM:
Two frontiers in the search
Collider experiments
(pp, e+e-, etc) at higher
energies (E >> MZ)
High energy
physics
Particle, nuclear
& atomic physics
CERN
Ultra cold neutronsLarge Hadron Collider
Indirect searches at
lower energies (E < MZ)
but high precision
Bumps Deviations
Unique role for low energy studies in the LHC era
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Precision Probes of New Symmetries
Standard Model Universe
EW Symmetry
Breaking: Higgs ?
New Forces ?
Puzzles the Standard Model can’t solve
1. Origin of matter
2. Unification & gravity
3. Weak scale stability
4. Neutrinos
SUSY ?
GUTS ?
Extra Dims ?WR
WL*
WL
~
μ
μ
˜ 0
˜ μ
˜ μ
e
W
e
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Precision Probes of New Symmetries
Standard Model Universe
EW Symmetry
Breaking: Higgs ?
New Forces ?
Puzzles the Standard Model can’t solve
1. Origin of matter
2. Unification & gravity
3. Weak scale stability
4. Neutrinos
SUSY ?
GUTS ?
Extra Dims ?WR
WL*
WL
~
μ
μ
˜ 0
˜ μ
˜ μ
e
W
e
?
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Precision & Energy Frontiers
Radiative
corrections
Direct
Measurements
J. Ellison, UCI
GFZ
GFμ
1+ rZ rμ( )
t
t Z 0 Z 0
t
b W + W +
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Precision & Energy Frontiers
Radiative
corrections
Direct
Measurements
Stunning SM Success
J. Ellison, UCI
GFZ
GFμ
1+ rZ rμ( )
t
t Z 0 Z 0
t
b W + W +
• Precision measurementspredicted a range for mt
before top quark discovery
• mt >> mb !
• mt is consistent with thatrange
• It didn’t have to be thatway
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Precision & Energy Frontiers
Radiative
corrections
Direct
Measurements
Stunning SM Success
J. Ellison, UCI
GFZ
GFμ
1+ rZ rμ( )
t
t Z 0 Z 0
t
b W + W +
• Precision measurementspredicted a range for mt
before top quark discovery
• mt >> mb !
• mt is consistent with thatrange
• It didn’t have to be thatway
Probing Fundamental
Symmetries beyond
the SM:
Use precision low-
energy measurements
to probe virtual effects
of new symmetries &
compare with collider
results
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Precision ~ Mass Scale
NEW =ONEW
OSM
M˜ M
2 M=mμ ~ 2 x 10-9
exp ~ 1 x 10-9
M=MW ~ 10-3
Interpretability
• Precise, reliable SM predictions
• Comparison of a variety of observables
• Special cases: SM-forbidden or suppressed processes
Precision Probes of the New SM
Discovery
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Precision ~ Mass Scale
NEW =ONEW
OSM
M˜ M
2 M=mμ ~ 2 x 10-9
exp ~ 1 x 10-9
M=MW ~ 10-3
Interpretability
• Precise, reliable SM predictions
• Comparison of a variety of observables
• Special cases: SM-forbidden or suppressed processes
Precision Probes of the New SM
Discovery
Illustrate ideas, physics reach,
& developing theoretical
methods with Minimal
Supersymmetric SM (MSSM)
but more generally applicable
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EDMs & the Origin of Baryonic Matter
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What is the Origin of Matter
?
Baryogenesis: When?
CPV? SUSY? Neutrinos?
EW Baryogenesis:
testable w/ EDMs +
colliders
Leptogenesis:
less testable,
look foringredients w/ s
Can new TeV scale
physics explain the
abundance of matter ?
If so, how will we
know ?
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Baryogenesis: Ingredients
Anomalous B-violating processes
Prevent washout by inverse processes
Sakharov Criteria
• B violation
• C & CP violation
• Nonequilibrium
dynamics
Sakharov, 1967
SM Sphalerons:
SM CKM CPV:
SM EWPT:
EDMs
LHC: Scalars
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Baryogenesis: New Electroweak Physics
Weak Scale Baryogenesis
• B violation
• C & CP violation
• Nonequilibrium
dynamics
Sakharov, 1967
new
(x)
Unbroken phase
Broken phaseCP Violation
Topological transitions
1st order phase transition
g
g
e-
new
new
new
AA
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Baryogenesis: New Electroweak Physics
Weak Scale Baryogenesis
• B violation
• C & CP violation
• Nonequilibrium
dynamics
Sakharov, 1967
new
(x)
Unbroken phase
Broken phaseCP Violation
Topological transitions
1st order phase transition
g
g
e-
new
new
new
• 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
AA
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Baryogenesis: EW Phase Transition
Weak Scale Baryogenesis
• B violation
• C & CP violation
• Nonequilibrium
dynamics
Sakharov, 1967
new
(x)
Unbroken phase
Broken phase
CP Violation& Transport1st order phase transition
Profumo, Shaugnessy, MR-M, Patel…
F F
Increasing mh
1st order 2nd order
Adding new
scalar particles
to the SMBarger, Fileviez-Perez,
Langacker, McCaskey,
O’Connel, Patel, Profumo, R-M,
Shaugnessy, Wang, Wise
Scalar Dark
Matter?
…Gonderinger,
Li, Patel, R-M
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Baryogenesis: CPV & Transport
Weak Scale Baryogenesis
• B violation
• C & CP violation
• Nonequilibrium
dynamics
Sakharov, 1967
new
(x)
Unbroken phase
Broken phase
CP Violation& Transport
Topological transitions
MSSM: Chung, Garbrecht, R-M, Tulin ‘09
Bubble interior
Bubble exterior
LH leptons
LH quarksLH fermions
CPV
Transport: A Competition
CPV
Chem Eq
R-M et al
Diffusion
Also Cirigliano,
Lee, R-M, Tulin
Coupled set of (~30) quantum Boltzmann equations
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Baryogenesis: CPV & Transport
Weak Scale Baryogenesis
• B violation
• C & CP violation
• Nonequilibrium
dynamics
Sakharov, 1967
new
(x)
Unbroken phase
Broken phase
CP Violation& Transport
Topological transitions
MSSM: Chung, Garbrecht, R-M, Tulin ‘09
Bubble interior
Bubble exterior
LH leptons
LH quarksLH fermions
CPV
Transport: A Competition
CPV
Chem Eq
R-M et al
Diffusion
Also Cirigliano,
Lee, R-M, Tulin
EDM searches:
How strong was the CPV “kick” ?
Details of spectrum impt: LHC !
Chung, Garbrecht, R-M, Tulin ‘08
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Probing CP &T: Electric Dipole Moments
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EDMs: New CPV?
• SM “background”
well below new
CPV expectations
• New expts: 102 to
103 more sensitive
• CPV needed for
BAU?3.1 x 10-29
r E
r d = d
r S
EDM =
dr S
r E
h
T-odd , CP-oddby CPTtheorem
r E
r d = d
r S
EDM =
d (r S )
r E
h
T-odd , CP-oddby CPTtheorem
EDM =
dr S
r E
h
T-odd , CP-oddby CPTtheorem
r E
r d = d
r S
r B
EDM =
dr S (
r E )
h
T-odd , CP-oddby CPTtheorem
r E
r d = d
r S
r B
x
dn: x < 0.5 mm
C-Y Liu
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EDMs: Standard Model CKM
3.1 x 10-29
CKM CPV
• 1 loop vanishes
( ~ Vus Vus* )
• 2 loop shown to
vanish explicitly
u
sW +
W +
n
pK +
K +
np
K +
• Khriplovich et al;
McKellar…
• Donoghue, Holstein,
RM; Khriplovich et al
Penguin: S = 1
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EDMs: Standard Model -term
3.1 x 10-29
n
p+
+
np
+
• Crewther et al; van
Kolck et al ; Herczeg
• Haxton & Henley;
Engel;
L QCD
• vanishes for any
mq=0
• “bar” : absorb quark
field redefinition
dn & dA (199Hg):
Peccei -Quinn Sym?
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EDMs: Peccei-Quinn & Axions I
Axion Field: GB of Spont Broken U(1)PQ
Chiral Anomaly:
a a + a
-term
+a
fa+
a
faObserved ~ 0
Axion
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EDMs: Peccei-Quinn & Axions II
+a
fa+
a
fa
Observed ~ 0
Axion
Dark Matter
Solar
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EDMs: New CPV?
• SM “background”
well below new
CPV expectations
• New expts: 102 to
103 more sensitive
• CPV needed for
BAU?
Mass Scale Sensitivity
e
sin CP ~ 1 M > 5000 GeV
M < 500 GeV sin CP < 10-2
3.1 x 10-29
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EDMs: New CPV?
• SM “background”
well below new
CPV expectations
• New expts: 102 to
103 more sensitive
• CPV needed for
BAU?
Mass Scale Sensitivity
e
sin CP ~ 1 M > 5000 GeV
M < 500 GeV sin CP < 10-2
3.1 x 10-29
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EDMs: Complementary Searches I
f
˜ 0
˜ f
˜ f
g
q
˜ 0˜ q
˜ q
Electron
Improvements
of 102 to 103
Neutronf
˜ 0
˜ f
˜ f
Neutral
Atomsg
q
˜ 0˜ q
˜ q
Deuterong
q
˜ 0˜ q
˜ q
N e
QCD
QCD
QCD
![Page 39: Fundamental Symmetries & Neutrinos in Nuclear Sciencepeople.umass.edu/mjrm/PDFs/DOE MRM 2010.pdf · Fundamental Symmetries & Neutrinos in Nuclear Science M.J. Ramsey-Musolf Wisconsin-Madison](https://reader035.vdocuments.site/reader035/viewer/2022062601/5e5d0b1e9fcb8701ba4449de/html5/thumbnails/39.jpg)
EDMs: Complementary Searches II
f
˜ 0
˜ f
˜ f
g
q
˜ 0˜ q
˜ q
Electron
Improvements
of 102 to 103
Neutronf
˜ 0
˜ f
˜ f
Neutral
Atomsg
q
˜ 0˜ q
˜ q
Deuterong
q
˜ 0˜ q
˜ q
N e
QCD
QCD
QCD
CJ
TMJ
TEJ
P T P T P T P T
E O
O E
O E
Nuclear Moments
EDM, Schiff…
MQM….
Anapole…
Nuclear
Enhancements
![Page 40: Fundamental Symmetries & Neutrinos in Nuclear Sciencepeople.umass.edu/mjrm/PDFs/DOE MRM 2010.pdf · Fundamental Symmetries & Neutrinos in Nuclear Science M.J. Ramsey-Musolf Wisconsin-Madison](https://reader035.vdocuments.site/reader035/viewer/2022062601/5e5d0b1e9fcb8701ba4449de/html5/thumbnails/40.jpg)
EDM Interpretation & Multiple Scales
BSM CPV
SUSY, GUTs, Extra Dim…
EW Scale Operators
Had Scale Operators
Baryon Asymmetry
Early universe CPV
Nuclear & atomic MEs
Schiff moment, other P- &
T-odd moments, e-nucleus
CPV
Collider Searches
Particle spectrum; also
scalars for baryon asym
QCD Matrix Elements
dn , g NN , …
Expt
![Page 41: Fundamental Symmetries & Neutrinos in Nuclear Sciencepeople.umass.edu/mjrm/PDFs/DOE MRM 2010.pdf · Fundamental Symmetries & Neutrinos in Nuclear Science M.J. Ramsey-Musolf Wisconsin-Madison](https://reader035.vdocuments.site/reader035/viewer/2022062601/5e5d0b1e9fcb8701ba4449de/html5/thumbnails/41.jpg)
EDM Interpretation & Multiple Scales
BSM CPV
SUSY, GUTs, Extra Dim…
EW Scale Operators
Had Scale Operators
Baryon Asymmetry
Early universe CPV
Nuclear & atomic MEs
Schiff moment, other P- &
T-odd moments, e-nucleus
CPV
Collider Searches
Particle spectrum; also
scalars for baryon asym
QCD Matrix Elements
dn , g NN , …
Expt
Had Scale Operators
Also QCD term
SM particles onlyBSM: new physics scale
C: model-dep op coeffs
e, q, g, (no Higgs)
QCD evolution
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EDMs: QCD & Many-Body Theory I
g
q
˜ 0˜ q
˜ q
f
˜ 0
˜ f
˜ f
Electron
Improvements
of 102 to 103
Neutronf
˜ 0
˜ f
˜ f
Neutral
Atomsg
q
˜ 0˜ q
˜ q
Deuterong
q
˜ 0˜ q
˜ q
N e
QCD
QCD
QCD
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EDMs: QCD & Many-Body Theory I
g
q
˜ 0˜ q
˜ q
f
˜ 0
˜ f
˜ f
Electron
Improvements
of 102 to 103
Neutronf
˜ 0
˜ f
˜ f
Neutral
Atomsg
q
˜ 0˜ q
˜ q
Deuterong
q
˜ 0˜ q
˜ q
N e
QCD
QCD
QCD
Neutron EDM from LQCD:
Two approaches:
• Expand in & average overtopological sectors (Blum et al,Shintani et al)
• Compute E for spin up/downnucleon in background E field(Shintani et al)
mN=2.2 GeV
QCD SR (Pospelov et al)
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EDMs: QCD & Many-Body Theory II
g
q
˜ 0˜ q
˜ q
f
˜ 0
˜ f
˜ f
Electron
Improvements
of 102 to 103
Neutronf
˜ 0
˜ f
˜ f
Neutral
Atomsg
q
˜ 0˜ q
˜ q
Deuterong
q
˜ 0˜ q
˜ q
N e
QCD
QCD
QCD
+L
n
p
+L
Hadronic couplings
Pospelov, Ji et al:
PCAC + had
models & QCD SR
ChPT for dn: van Kolck et al
P-,T-odd NN
I = 0,1,2
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EDMs: QCD & Many-Body Theory III
g
q
˜ 0˜ q
˜ q
f
˜ 0
˜ f
˜ f
Electron
Improvements
of 102 to 103
Neutronf
˜ 0
˜ f
˜ f
Neutral
Atomsg
q
˜ 0˜ q
˜ q
Deuterong
q
˜ 0˜ q
˜ q
N e
QCD
QCD
QCD
+L
n
p
+L
Nuclear Schiff Moment
Nuclear EDM: Screened in atoms
Schiff Screening
Atomic effect from
nuclear finite size:
Schiff moment
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EDMs: QCD & Many-Body Theory III
g
q
˜ 0˜ q
˜ q
f
˜ 0
˜ f
˜ f
Electron
Improvements
of 102 to 103
Neutronf
˜ 0
˜ f
˜ f
Neutral
Atomsg
q
˜ 0˜ q
˜ q
Deuterong
q
˜ 0˜ q
˜ q
N e
QCD
QCD
QCD
+L
n
p
+L
Nuclear Schiff Moment
Nuclear EDM: Screened in atoms
Schiff Screening
Atomic effect from
nuclear finite size:
Schiff moment
Liu et al: New formulation of Schiff operator
+ …
Role of nuclear correlations
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EDMs & Schiff Moments
f
˜ 0
˜ f
˜ f
g
q
˜ 0˜ q
˜ q
One-loop
EDM: q, l, n… Chromo-EDM: q, n…
+L
Dominant in
nuclei & atoms
Engel & de Jesus: Enhanced isoscalar sensitivity ( QCD )
Schiff Moment in 199Hg Nuclear & hadron structure
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EDMs & Isospin Filter: n, p, A
Chiral limit:
Nucleons Schiff Moments
+L
Schiff Moment in 199Hg
n
p
p
n
+
+
dn dp ~ g 0 dn + dp ~ g 1
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EDMs BSM: MSSM
A = arg (Af Mj )
j = arg (μMjb*)
Universality Assumption
1 = 2= 3
Common A
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EDMs BSM: MSSM
A = arg (Af Mj )
j = arg (μMjb*)
EWSB
Quark & Lepton EDMs
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EDMs BSM: MSSM
A = arg (Af Mj )
j = arg (μMjb*)
Quark Chromo-EDMs
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EDMs BSM: MSSM
A = arg (Af Mj )
j = arg (μMjb*)
Weinberg 3 gluon Op
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EDMs BSM: MSSM
A = arg (Af Mj )
j = arg (μMjb*)
Four fermion Ops
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MSSM EDMs: Leading Contributions
f
˜ 0
˜ f
˜ f
g
q
˜ 0˜ q
˜ q
Electron
Neutronf
˜ 0
˜ f
˜ f
Neutral
Atomsg
q
˜ 0˜ q
˜ q
Deuterong
q
˜ 0˜ q
˜ q
g
gg
g
gg
g
gg
q, l EDM Chromo-
EDM
Weinberg
3 gluon
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Heavy Sfermions: Two-loop EDMs
One loop EDMs suppressed in heavy
sfermion regime
Li, Profumo, R-M: PRD 78:075009
(2008)
WH Loops dominate for neutron &comparable to H, A for electron
mA=300 GeV, μ=300 GeV, M2=2M1=290 GeV
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EDM Interpretation: MSSM
A = arg (Af Mj )
Ritz CIPANP 09
1-loop: Universal Phases
j = arg (μMjb*)Universality Assumption
1 = 2= 3
Common A
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EDM Interpretation: MSSM
A = arg (Af Mj )
j = arg (μMjb*)
Correlated Constraints
PresentFuture dn : 100 x
present sensitivity
Li, Profumo, R-M ‘10
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EDM Interpretation: MSSM
A = arg (Af Mj )
j = arg (μMjb*)
Correlated Constraints
PresentFuture dn : 100 x
present sensitivity
Li, Profumo, R-M ‘10
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EDM Interpretation: MSSM at 2 Loop
A = arg (Af Mj )
Li, Profumo, R-M 09
2-loop: Non-universal Phases
j = arg (μMjb*)
f
˜ 0
˜ f
˜ f
g
q
˜ 0˜ q
˜ q
Decouple in heavy
sfermion regime
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One Loop EDMs & Baryogenesis
g
q
˜ 0˜ q
˜ q
f
˜ 0
˜ f
˜ f
new
(x)
q , ˜ W , ˜ B , ˜ H u,d
T ~ TEW
Resonant Non-resonantCirigliano, Lee,
Tulin, R-M
Future
de dn dA
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EDMs & EWB: 2 Loop Regime
Arg(μM1b*) = Arg(μM2b
*)/
Weak dependence ofde , dn on Arg(μM1b
*)
Res + EWB not
compatible with dn
Res & non-res 0
EWB compatible
with future dn , light
mA, & moderatetan
Li, Profumo, R-M: PLB
673:95 (2009)
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EDM Interpretation & Multiple Scales
BSM CPV
SUSY, GUTs, Extra Dim…
EW Scale Operators
Had Scale Operators
Baryon Asymmetry
Early universe CPV
Nuclear & atomic MEs
Schiff moment, other P- &
T-odd moments, e-nucleus
CPV
Collider Searches
Particle spectrum; also
scalars for baryon asym
QCD Matrix Elements
dn , g NN , …
Expt
LHC phenomenology
B Physics
Dark Matter
EW Baryogenesis
Quantum transport
theory
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MSSM Baryogenesis: EDMs & LHC
baryogenesis
Present de
LEP II excl
Prospective dn
Cirigliano, Profumo, R-M
+-driven EWB
0-driven EWB
LHC reach
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MSSM Baryogenesis: EDMs & LHC
baryogenesis
Present de
LEP II excl
Prospective dn
Cirigliano, Profumo, R-M
+-driven EWB
0-driven EWB
LHC reach
New complete 2-loop MSSM EDM: Li, Profumo, R-M
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MSSM Baryogenesis: EDMs & LHC
baryogenesis
Present de
LEP II excl
Prospective dn
Cirigliano, Profumo, R-M
+-driven EWB
0-driven EWB
10-28
LHC reach
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B Physics
FBMSSM: only A
Altmannshofer et al, PLB 669, 239 (2008)
Af t( ) = S f sin m t( ) Cf cos m t( )
Future dn,e
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Relationship to JLab PVES
J Lab PVES: Insensitive to CPV but probes mass scale
r e
e
e , p
e , pZ 0
r e
e
e , p
e , p
APV =N N
N + N=GFQ
2
4 2QW + F(Q
2, )[ ]
˜ e
˜ e +
+L+
e f
Z 0˜
˜ +
e
e
ef
f
fZ 0
SUSY Loops: Kurylov, SU, MR-M How heavy are
the sfermions?
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Probing SUSY with PV Electron Scattering
QW
P,
SU
SY
/
QW
P,
SM
RPV: No SUSY DMMajorana s
SUSY Loops
QWe, SUSY / QW
e, SM
gμ-2
12 GeV
6 GeV
E158
Q-Weak (ep)
Moller (ee)
Kurylov, RM, Su
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Probing Sfermion Mass Scale
˜ e
˜ e +
+L+
e f
Z 0˜
˜ +
e
e
ef
f
fZ 0
SUSY Loops: Kurylov, SU, MR-M
Su, R-M
Preliminary
Contours ofconstant QW
e
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EDMs: What We May Learn
Present n-EDM limit
Proposed n-EDM limit
?
Matter-Antimatter
Asymmetry in
the Universe
Better theory ?
New theory ?
Leptogenesis ?
“n-EDM has killed
more theories than
any other single
experiment”
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Summary & Outlook I
1. NP studies of FS & ’s are poised to provide key
ingredients of the new Standard Model
2. EDM searches may discover the CPV needed to
explain the origin of baryonic matter
3. Sensitivity of EDMs exceeds that of LHC & B-physics
program, but HEP experiments provide
complementarity information
4. Comprehensive search strategy involving a variety of
systems is crucial
5. Ongoing theory work essential to guide the EDM
program, properly interpret results in terms of the new
Standard Model, and delineate broader implications
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Summary & Outlook II
1. Nucleon & lepton EDM searches with a sensitivity of ~
10-28 e-cm needed to conclusively probe MSSM
baryogenesis
2. Theoretical tasks include:
• Complete development of tools for robustbaryogenesis calculations (transport, EWPT)
• Up-dated calculations of nuclear Schiff momentsand other P,T-odd moments
• Refined hadronic computations of dn,p and P,T-odd pion-nucleon couplings
• Apply to other BSM scenarios
• Delineate comprehensively relation with future B-physics and LHC studies
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Back Matter
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SUSY Radiative Corrections
Propagator
Box
Vertex &
External leg
˜ e
˜ e +
+L+
e f
Z 0˜
˜ +
e
e
ef
f
fZ 0
˜ 0
˜ e
˜
˜
+ +L
e
e
e
e
f
f
f
fZ 0 Z 0
˜ e
˜ e
˜ e +L
e
e
f
f
˜ f
˜
˜
Kurylov, RM, Su
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SUSY: R Parity-Violation
μ
e e
μ
˜ e Rk
12k 12k
e
d e
d
˜ q Lj
/1j1
/1j1
L=1 L=1
12k =12k
2
4 2GF M˜ e R
k
2 1j 1/
=iji/ 2
4 2GFM˜ q L
j
2