150 research outputs found
WW Physics at Future e+e- Linear Colliders
Measurements of triple gauge boson couplings and strong electroweak symmetry
breaking effects at future e+e- linear colliders are reviewed. The results
expected from a future e+e- linear collider are compared with LHC expectations.Comment: 12 pages, 4 figures, to appear in proc. for 5th International
Symposium on Radiative Corrections (RADCOR-2000), Carmel, CA, US
Electroweak Symmetry Breaking by Strong Dynamics and the Collider Phenomenology
We discuss the possible signatures in the electroweak symmetry breaking
sector by new strong dynamics at future hadron colliders such as the Tevatron
upgrade, the LHC and VLHC, and linear colliders. Examples include a
heavy Higgs-like scalar resonance, a heavy Technicolor-like vector resonance
and pseudo-Goldstone states, non-resonance signatures via enhanced gauge-boson
scattering and fermion compositeness.Comment: Summary report of the Strong Electroweak Symmetry Breaking Working
Group at 2001 Snowmass Summer Studie
Physics at Multi-TeV Linear Colliders
The physics at an e+e- linear collider with a center of mass energy of 3-5 TeV is reviewed. The following topics are covered: experimental environment, Higgs physics, supersymmetry, fermion pair-production, WW scattering, extra dimensions, non-commutative theories, and black hole production.The physics at an e+e- linear collider with a center of mass energy of 3-5 TeV is reviewed. The following topics are covered: experimental environment, Higgs physics, supersymmetry, fermion pair-production, WW scattering, extra dimensions, non-commutative theories, and black hole production
A Study of the Impact of High Cross Section ILC Processes on the SiD Detector Design
The SiD concept is one of two proposed detectors to be mounted at the
interaction region of the International Linear Collider (ILC). A substantial
ILC background arises from low transverse momentum
pairs created by the interaction of the
colliding beams' electromagnetic fields. In order to provide hermeticity and
sensitivity to beam targeting parameters, a forward Beamline Calorimeter
(BeamCal) is being designed that will provide coverage down to 5 mrad from the
outgoing beam trajectory, and intercept the majority of this pair background.
Using the SiD simulation framework, the effect of this pair background on the
SiD detector components, especially the vertex detector (VXD) and forward
electromagnetic calorimeter (FCAL), is explored. In the case of the FCAL,
backgrounds from Bhabha and two-photon processes are also considered. The
consequence of several variants of the BeamCal geometry and ILC interaction
region configuration are considered for both the vertex detector and BeamCal
performance
Hadron production in gamma-gamma collisions as a background for e+e- linear colliders
Drees and Godbole have proposed that, at the interaction point of an e+e-
linear collider, one expects a high rate of hadron production by gamma-gamma
collisions, providing an additional background to studies in e+e- annihilation.
Using a simplified model of the gamma-gamma cross section with soft and
jet-like components, we estimate the expected rate of these hadronic events for
a variety of realistic machine designs. The final background rates are quite
small, and they become smaller still when viewed with a realistic detector
simulation.Comment: PHYZZX, 39 pages, including 3 tables; 14 figures are not included but
are available upon reques
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