Dr
Simona Giovannella
(LNF)
10/12/2010, 14:50
Cosmology and astroparticles, dark matter searches
The possible existence of a new light vector boson mediator of a gauge interaction under which SM particles are neutral and which couples with the SM via a kinetic mixing mechanism has recently been postulated by several authors. Such particle can be produced in e+e- collisions and/or decays of vector bosons and be visible in existing experiments, provided that the mixing parameter is of...
Dr
Yuri Gershtein
10/12/2010, 15:15
Cosmology and astroparticles, dark matter searches
In hidden valley scenarios, new particles with relatively light masses
are hypothesized to
exist in a "potential valley" separated from the
standard model by a high potential barrier. At high energy colliders,
this barrier could be
crossed leading to the production of hidden valley
particles which could decay to standard model particles after
moderately short lifetimes.
Results from...
Dr
Monica Verducci
(Unievrsity of Washington)
10/12/2010, 15:40
Cosmology and astroparticles, dark matter searches
A number of extensions of the Standard Model result in neutral and weakly-coupled particles that decay to multi hadrons or multi leptons with macroscopic decay lengths. These particles with decay paths that can be comparable with ATLAS detector dimensions represent, from an experimental point of view, a challenge both for the trigger and for the reconstruction capabilities of the ATLAS...
Dr
Edmund Widl
(HEPHY)
10/12/2010, 16:05
Cosmology and astroparticles, dark matter searches
Supersymmetry may give rise to striking events that could be discovered early in LHC running. We discuss search strategies based on the generic event signatures of high jet multiplicity and large missing transverse momentum, optionally including leptons and photons in the final state. An important aspect of such searches is the commissioning of search variables with LHC data, and demonstrating...
