Thursday, April 30, 2015, 16:00
WHGA/Auditorium
Reisaburo Tanaka, LAL Orsay
Abstract:
The quest for the origin of the electroweak symmetry breaking is the
principal endeavour of the elementary particle physics of today. The
Brout-Englert-Higgs (BEH) mechanism models the spontaneous breakdown of
a gauge symmetry by a self-interacting scalar field. It postulates the
existence of a scalar neutral boson, known as Higgs particle, which is
also responsible for the origin of mass of elementary particles via
Yukawa interaction. After the discovery of the Standard Model-like Higgs
boson at Large Hadron Collider (LHC) at CERN in July 2012, it has been
the prime importance to test if the observed signal at mass around 125
GeV has the scalar nature and has the couplings with gauge-bosons and
fermions as predicted by the Standard Model. The ATLAS and CMS
experiments at LHC have accumulated data corresponding to the integrated
luminosity of about 5 fb^-1 at the centre-of-mass energy of 7 TeV and
about 20 fb^-1 at the centre-of-mass energy of 8 TeV in RUN-1 at
LHC. Principal experimental results on the Standard Model Higgs boson in
RUN-1 at LHC will be reported for its mass, width, coupling and spin/CP
measurements. Phenomenological issues and prospects for RUN-2 for the
Standard Model Higgs boson will be discussed, based upon the activity of
the LHC Higgs Cross Section Working Group which is the joint effort
among ATLAS, CMS and the theory community.