Beyond the Higgs wan ahmad tajuddin wan abdullah kumpulan fizik tenaga tinggi jabatan fizik universiti malaya

A Higgs-compatible boson has been observed at the LHC at CERN .

1 Higgs in 1010 events expected Look at possible decay products in event Reconstruct parent mass Look for unaccounted enhancement

mH ~ 125 GeV/c2

Role of the Higgs in particle physics Standard model of particle physics Role of Higgs

Standard Model of particle physics

Problem of mass Interactions described by renormalizable gauge field theories => fermions and intermediary gauge bosons massless Weak interaction short range => massive intermediary gayge bosons

Mass through spontaneous symmetry-breaking [ Electroweak unification] => Higgs field Kibble, Guralnik, Hagen, Englert, Brout, Higgs

A particle acquiring mass as it traverses the Higgs field A Higg particle

Current challenges in particle physics and cosmology Phenomenology of the Standard Model - strong nuclear force - flavours - GUTs Supersymmetry - does it exist? - role in unifying gravity with other forces Dark matter and dark energy

Standard Model of cosmology microwave background radiation

Strong force – quantum chromodynamics fragmentation exotic states

Flavours 3 generations? Leptonic sector – massive neutrinos Weak eigenstates not energy eigenstates Leptonic sector – massive neutrinos - Majorana or Dirac? 3 generations?

CP (charge-parity) violation – matter-antimatter asymmetry

Hierarchy problem supersymmetry? extra dimensions?

Grand Unification - how is QCD unified w electroweak? gauge bosons, leptoquarks proton decay

Supersymmetry Supergravity – unification with gravity Superpartners? GUT Gravity from fields

Theories of everything Extra dimensions Superstrings QCD + EW from curvature

Dark matter – non-baryonic – stable neutrinos? – flavours superparticles? from galaxy rotation; cosmology

Dark energy Accelerated expansion – from supernova measurements

Dark energy what?

Efforts in experimental particle physics by Malaysia Energy frontier CMS @ LHC Intensity frontier COMET @ JPARC Belle II @ SuperKEKB Cosmic frontier

ZEUS High energy electron on proton - ended 2007, data analysis still ongoing electronics – read-out control hadron caloimetry fragmentation – baryons, strange correlations pentaquarks particle production – exlusive, diffractive

Data 2003-2007 MC exclusive Y'

CMS TeV proton on proton - running electromagnetic calorimetry grid jets

Belle II High intensity B factory - operating 2014 drift chamber muon detector Monte Carlo cloud rare events - exclusive

COMET High intensity muon beam - initial stages Monte Carlo flavour-changing muons

Come and join us! Terima kasih