Font Size: a A A

Search for Weakly-interacting Long-lived Particles in Proton-Proton Collisions at the Center of Mass Energy = 8 TeV with the ATLAS Detector

Posted on:2014-09-14Degree:Ph.DType:Dissertation
University:University of WashingtonCandidate:Harris, Orin MichaelFull Text:PDF
GTID:1450390005498776Subject:Physics
Abstract/Summary:PDF Full Text Request
A search for the decay of a light Higgs boson to a pair of weakly-interacting, long-lived particles in 20.8 fb-1 of proton-proton collisions at s = 8 TeV recorded in 2012 by the ATLAS detector is presented. The strategy requires that both of the long-lived particles decay just before or inside the hadronic calorimeter. No statistically significant excess of events is observed above the expected background and limits on the Higgs boson production and branching ratio to weakly-interacting, long-lived particles are derived as a function of the particle's proper decay length.
Keywords/Search Tags:Long-lived particles, Weakly-interacting, ATLAS detector, Proton-proton collisions, Higgs boson
PDF Full Text Request
Related items
1 Search for the standard model Higgs Boson production and decay to W Boson pairs using the lepton + met + jets channel using 4.7 fb(-1 as an exponent) of data recorded by the ATLAS detector at the square root of s = 7 TeV proton-proton collision
2 Measurement Of The Associated Production Of A Higgs Boson Decaying To B(?) With A Vector Boson At High Transverse Momentum In Pp Collisions At (?)=13 TeV With The ATLAS Detector
3 Search for the Higgs boson produced in association with W(+/-) boson, in WH to tau-nu-bottom quark-antibottom quark final state, in proton anti-proton collisions at 1.96 TeV center of mass energy
4 Search For Heavy Neutral Resonances In Vector Boson Fusion In Proton-proton Collisions At (?)＝13 TeV With The ATLAS Detector At The LHC
5 Extraction of CP Properties of the H(125) Boson Discovered in Proton-Proton Collisions at square root ofs = 7 and 8 TeV with the CMS Detector at the LHC
6 Search for a Higgs-like boson decaying to two photons in proton anti-proton collisions at a center of mass energy = 1.96 TeV
7 An Inclusive Analysis of tt, WW, and Z to tau tau Production in the Dilepton Final State from Proton-Proton Collisions at Center of Mass Energy = 7 TeV with the ATLAS Detector
8 Search For Heavy Neutral Particles With Different Flavor Di-lepton Decay In Proton-proton Collisions At (?)=13TeV With The ATLAS Detector At The LHC
9 A measurement of R = sigma x B meson (proton antiproton going to W boson going to charged electron neutrino)/sigma x B meson (proton antiproton going to Z boson going to positron electron) using the CDF detector in proton antiproton collisions at 1800 GeV
10 Search for the Standard Model Higgs Boson in the Diphoton Final State in Proton-Antiproton Collisions at a Center of Mass Energy of 1.96 TeV Using the CDF II Detector