Jet reconstruction in LHCb searching for Higgs-like particles

Reconstruction of charged particles in the LHCb experiment

Searching for Axion-like Particles with Active Galac- tic Nuclei

An Axion-Like Particle (ALP) is any scalar or pseudo-scalar field which couples to the kinetic terms of the photon. The pseudo scalar coupling to photons is identical to that of the axion; L ⊃ φ 4M ǫμνλρFF, and a scalar field couples through the Lagrangian term; L ⊃ φ 4MFμνF μν . The presence of contact interactions between ALPs and photons means that ALPs affect the propagation of photons thro...

Searching for Supersymmetric Particles

Submitted for the IT05 Meeting of USB Dept. of Physics and Astronomy Sorting Category: 1.0 (T) Searching for Supersymmetric Particles XINAN ZHOU, Stony Brook University —Supersymmetry (SUSY) is a special symmetry postulated to exist in many physics theories that relates particles of different statistics. However, evidence of the existance of SUSY has still not been found by decades’ experimenta...

Searching for the intermediate-mass Higgs boson.

We study the feasibility of detecting a neutral Higgs boson Ho, with mass between 2mt w 80 GeV (by assumption) and 2mw at an e+e-machine or the SSC. Backgrounds to the production at an e+e-machine of Ho in association with a Z are calculated with particular emphasis on the case when mH M mz. We present a detailed survey of the signals for and backgrounds to the inclusive or associated productio...

Understanding jet scaling and jet vetos in Higgs searches.

Jet counting and jet vetos are crucial analysis tools for many LHC searches. We can understand their properties from the distribution of the exclusive number of jets. LHC processes tend to show either a distinct staircase scaling or a Poisson scaling, depending on kinematic cuts. We illustrate our approach in a detailed study of jets in weak boson fusion Higgs production.