University of
California, Davis
Physics Department
High Energy Seminar
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Dr. Andre Sopczak
Lancaster University
"Higgs Physics: from LEP to a Linear Collider"
Final and preliminary results from the four LEP experiments ALEPH,
DELPHI, L3 and OPAL on Higgs boson searches beyond the Standard Model
(SM) are presented. The results of searches in extended models
include: HZZ couplings and anomalous couplings. In the Minimal
Supersymmetric extension of the SM (MSSM), dedicated searches, a
three-Higgs-boson hypothesis, benchmark and general scan mass limit are
reviewed. CP-violating models, invisible Higgs boson decays,
flavor-independent hadronic decays, Yukawa processes, singly and
doubly-charged Higgs bosons, and fermio-phobic decays are addressed.
Wide consensus has been reached on the physics case and the need for a
high luminosity electron-positron collider with center-of-mass energy
of at least 500 GeV as the next world-wide HEP project. The study of
the Higgs boson profile represents a sigificant part of this physics
programme. The world-wide studies demonstrate that a future LC
providing is an excellent Higgs boson analyzer for a wide range of
masses. A summary of the results of these studies and their
implications in identifying the nature of the Higgs sector and to
constrain the parameters space of extended models is given, focusing
especially on recent developments.
Tuesday, June 8,
2004
4:10 p.m., 416 Phy/Geo