Greetings and Greetings and Purpose of This Purpose of This

MeetingMeeting

Physics Department, Graduate School of SciencePhysics Department, Graduate School of Science& ICEPP & ICEPP

The University of TokyoThe University of TokyoSachio KomamiyaSachio Komamiya

Koshiba Hall 24th November 2005

Discoveries of Higgs and SupersymmetrDiscoveries of Higgs and Supersymmetry to Pioneer Particle Physics of 21y to Pioneer Particle Physics of 21stst Cen Cen

turytury

MEXT Grand “Higgs and Supersymmetry” MEXT Grand “Higgs and Supersymmetry”

On the eve of the 1974 Revolution

HEP conference 　１９７４　Summer

R=σhadrons/σμμ ＝ ΣQq2

B.Richter

J.Ellis

31 years since31 years sincethe November Revolutionthe November Revolution

Discovery of J/ψDiscovery of J/ψ

e+e- →ψ SLAC Richter et al.

J→ e+e- 　 BNL　 丁 et al.

J/ψ ＝ｃｃ　 bound state

Lept

ons

Q

uark

s Gauge bosons

Higgs boson

The November RevolutionThe November Revolution

B.Richter 　　

ｗ ith California wine

Lept

ons

Q

uark

s Gauge bosons

Higgs boson

We are now on the eve of We are now on the eve of the next Revolutionthe next Revolution

ATLAS Experiment

MEG Experiment

Theoretical Studies towards construction of ILC

All the interactions are governed bAll the interactions are governed by the sacred Gauge Symmetry y the sacred Gauge Symmetry

Higgs Boson breaks the Gauge SyHiggs Boson breaks the Gauge Symmetry and gives mass to all tmmetry and gives mass to all the elementary particles.he elementary particles.

LEP experiments chased Higgs intLEP experiments chased Higgs into a small corner of the parameo a small corner of the parameter space: 114~200 GeV ter space: 114~200 GeV

The last particle in the Standard The last particle in the Standard Model Model

The most urgent subject in particlThe most urgent subject in particle physicse physics

Direct Discovery of Higgs BosonDirect Discovery of Higgs Boson

Higgs BosonHiggs Boson

Supersymmetry (SUSY)Supersymmetry (SUSY)・・ SUSY is a space-time symmetrySUSY is a space-time symmetry　　　　　　　　　　　　　　　　 It plays a crucial role for the unification of forces with gravitIt plays a crucial role for the unification of forces with gravit

yy

・ ・ Every Elementary Particle has SUSY partner, mass of themEvery Elementary Particle has SUSY partner, mass of them 　≦ 　≦ TeVTeV　　　　　　　　　　　　　　　　⇒ ⇒ The value of the discovery is that for the Anti-particleThe value of the discovery is that for the Anti-particle

・ ・ The lightest SUSY particle is the best candidate of the Dark MatterThe lightest SUSY particle is the best candidate of the Dark Matter　　　　　　　　　　　　　　　　⇒ ⇒ Understanding of the structure of the universeUnderstanding of the structure of the universe

Lept

ons

and

Qua

rks

Ordinary particlesGauge bosons

Higgs boson

Ordinary particlesGauge bosons

SUSY partners

Higgs bosons

Gauginos

Dark Matter Candidates

Higgs and SUSY are undiscovered

Lept

ons

and

Qua

rks

Sca

lar

Fer

mio

ns

Higgsinos

Electro-magnetic Int.

MagnetismElectro-Weak Int.

β -decay Weak Interaction Grand-Unificationwith SUSY

Nuclei Strong Interaction QCD

Terrestrial experiments

Evolution of Planets

Gravity Quantum Gravity ？

Super-string ？

Maxwell

Weinberg et al.

Fermi

Yukawa

Galileo

Kepler

Newton

Einstein

Electricity

ＬＥＰ etc.

ＬＨＣ / ＩＬＣ

？

Un

ificatio

n o

f F

orc

es

General Relativity

oror

Something totally unexpectedSomething totally unexpectedcan be discoveredcan be discovered

Please enjoy the conference Please enjoy the conference Please come to the party tonightPlease come to the party tonight