Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY...
-
Upload
jaiden-nacke -
Category
Documents
-
view
216 -
download
1
Transcript of Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY...
![Page 1: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/1.jpg)
Outlook: Higgs, SUSY, flavor
Ken-ichi Hikasa (Tohoku U.)
Fourth Workshop, Origin of Mass and SUSYMarch 8, 2006, Epochal Tsukuba
![Page 2: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/2.jpg)
Apology
This is not designed to be a summary talk…, so no reference to most of the talks
![Page 3: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/3.jpg)
Standard Model
![Page 4: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/4.jpg)
SM = GHY
Three elements G: gauge H: Higgs Y: Yukawa
![Page 5: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/5.jpg)
SM = GHY
Three elements G: gauge D
H: Higgs Y: Yukawa
All gauge interactions from D = + ig A
Universality: unique coupling, blindness to generations
![Page 6: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/6.jpg)
SM = GHY Three elements
G: gauge H: Higgs 4
Y: Yukawa
Symmetry breaking, W,Z masses Higgs mass term 2: only dimensional
parameter in SM (classically) sets the weak scale
![Page 7: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/7.jpg)
SM = GHY
Three elements G: gauge H: Higgs Y: Yukawa y f f
Fermion couplings to Higgs field give masses to quarks/leptons
![Page 8: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/8.jpg)
SM = GHY
Three elements G: gauge D
H: Higgs Y: Yukawa
Only interaction experimentally confirmed: 2/3 of SM still to be tested
![Page 9: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/9.jpg)
SM = GHY
Three elements G: gauge H: Higgs Y: Yukawa yij fi fj
No ‘universality’: origin of flavor difference and mixing
Most # of parameters in SM
![Page 10: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/10.jpg)
Generation mixing
u1
u2
d1
d2
If no Yukawa coupling, generation labels has no meaning
![Page 11: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/11.jpg)
Generation mixing
u1
u2
d1
d2
Charged current interactions connects ups and downs
W±
![Page 12: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/12.jpg)
Generation mixing
Yukawa couplings breaks the generation symmetry
u1
u2
d1
d2
u
c
d
s
![Page 13: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/13.jpg)
Generation mixing
Mismatch of ups and downs gives the Cabibbo mixing
u1
u2
d1
d2
u
c
d
s
C
W
![Page 14: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/14.jpg)
Leptons
If the neutrinos were massless…
1
2
1
2
e
![Page 15: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/15.jpg)
Leptons
Neutrino eigenstates can be defined only by charged currentand the lepton flavors are conserved
1
2
1
2
e
e
![Page 16: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/16.jpg)
Neutrino mass (side remark)
In SM, is made to be massless Quark-lepton correspondence
Naturally expect R & Yukawa R : gauge blind particle (hard to see)
Ultratiny mass suggests different origin Important question: Dirac or Majorana?
![Page 17: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/17.jpg)
Higgs sector
![Page 18: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/18.jpg)
Iweak = ½ Rule
Quark/lepton masses have to be Iweak = ½ W, Z masses can have any Iweak
Precision measurements: experimental evidence for Iweak = ½ dominance
![Page 19: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/19.jpg)
Iweak = ½ Rule
=1 to high precision doublet vev dominance
![Page 20: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/20.jpg)
Indirect Higgs limit
Mtop (GeV)
MW
(GeV
)
150 175 200
80.5
80.4
80.3
![Page 21: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/21.jpg)
Direct Higgs searches Still a long way to go, but worth pursueing
![Page 22: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/22.jpg)
MSSM implies light Higgs
![Page 23: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/23.jpg)
MSSM/two doublet Large tan region started to be excluded at Tevatron
A0 +-
![Page 24: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/24.jpg)
Beyond SM
Standard Model is not the final story
![Page 25: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/25.jpg)
(Observational) reasons we need BSM
Gravity Dark Matter Dark Energy Baryon asymmetry CMB Neutrino mass
![Page 26: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/26.jpg)
(Theoretical) reasons we need BSM
No strong CP violation Hierarchy problem? Too many parameters? Unification of gravity
![Page 27: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/27.jpg)
Where to seek for BSM New particles
Energy frontier Faint interactions (can be light)
Forbidden processes baryon # violation lepton # violation lepton flavor violation (seen in oscillations, but very small)
Suppressed processes
![Page 28: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/28.jpg)
Weak interaction processes
Superallowedt b, c s
CKM suppressed (tree-allowed but small) b c, u; s u
GIM suppressed (tree-forbidden) FCNC b s, d; s dGood place to look for new physics
![Page 29: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/29.jpg)
BSM Scenarios
![Page 30: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/30.jpg)
SupersymmetryRaison d’être aka excuse:
Unique nontrivial extension of the Poincaré group (= Einstein’s relativity)
Motivation @ weak scale:
Stabilize Fermi-Planck hierarchy by cancelling loop corrections
![Page 31: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/31.jpg)
Extra DimensionsRaison d’être aka excuse:
Superstrings require 10 spacetime dimensions for consistency
Motivation @ weak scale:
(Originally) trading the Fermi-Planck hierarchy for large extra-dim size
More recently, branes, Randall-Sundrum hierarchy, …
![Page 32: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/32.jpg)
Extra Dimensions
All SM interactions are nonrenormalizable for D>5 Couplings tend to blow up above weak scale: Strong-coupling phenomena at TeV (Technicolor-type physics)
Higgsless models: Heavy W,Z recurrences should appear
![Page 33: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/33.jpg)
And many others
![Page 34: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/34.jpg)
Minimal Supersymmetric Standard Model
![Page 35: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/35.jpg)
MSSM
Many parameters (>100) New sources of flavor structure
Sfermion masses (left and right) LR mixing (A term)
New sources of CP violation LSP neutralino: good DM candidate
![Page 36: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/36.jpg)
D-squark mass matrix
2 2 2
2 2 2
2 2 2
dd ds db
sd ss sb
bd bs bb
m m m
m m m
m m m
One new source of flavor mixing
![Page 37: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/37.jpg)
D-squark mass matrix
2 2 2
2 2 2
2 2 2
dd ds db
sd ss sb
bd bs bb
m m m
m m m
m m m
Chiral substructure of sfermion mass
2 2
2 2bLsL bLsR
bRsL bRsR
m m
m m
![Page 38: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/38.jpg)
Vast parameter space
Most regions contradict with neutral Kaon mixing
mSUGRA, CMSSM: tiny regions in the parameter space Useful as a guideline Should not trust too much
![Page 39: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/39.jpg)
Varied phenomenology
Different mass patterns Generally: colored > noncolored Split SUSY: scalars > gauginos Focus point: light higgsinos
Interesting alternatives Gauge mediation: stau LSP Anomaly mediation: light wino R parity violation: exotic resonances
![Page 40: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/40.jpg)
Dark Matter
![Page 41: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/41.jpg)
Rare b decays In SM, b s is much more suppressed than b
c good place for new physics b-s sfermion mixing can contribute to CP asym
metry
![Page 42: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/42.jpg)
New physics effects on b s
![Page 43: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/43.jpg)
Sign of SUSY contributions
Extra contribution to sL
Same sign deviation for B K and ’K New mixing of sR
Opposite sign deviation for B K and ’K
![Page 44: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/44.jpg)
Consequence of possible deviation
If both K and ’K deviates in the same direction, new physics are in the left-handed sector
(the data are old)
Endo, Mishima, Yamaguchi
![Page 45: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/45.jpg)
Lepton-flavor violation
Neutrino mass mixing: way too small effect on charged lepton FV
Supersymmetry: slepton mass matrix gives new LFV source GUT: quark mixing lepton mixing Right-handed new mixing source Observable effect expected in , e etc.
![Page 46: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/46.jpg)
Conclusions
![Page 47: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/47.jpg)
Conclusions
Tevatron has plunged into new luminosity frontier SM Higgs: important target to pursue MSSM/Two doublet: already started to constrai
n parameter space Supersymmetry, XD, etc: Don’t wait for LHC
![Page 48: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/48.jpg)
Conclusions (cont’d)
B factories Very rich physics output Good measurements of all 3 angles Hint of new physics?? LFV: unique place to seek for BSM
Kaon physics should not be discontinued
![Page 49: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/49.jpg)
Future
2 2 2
2 2 2
2 2 2
dd ds db
sd ss sb
bd bs bb
m m m
m m m
m m m
LHC, ILC
B physics
K physics
![Page 50: Outlook: Higgs, SUSY, flavor Ken-ichi Hikasa (Tohoku U.) Fourth Workshop, Origin of Mass and SUSY March 8, 2006, Epochal Tsukuba.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649cbf5503460f949850bc/html5/thumbnails/50.jpg)
One final remark
‘Mass-origin’ priority-area grant ends in one month,
but
We are still on the way!