Experimental Particle Physics Rolling Grant 2006-2011
Lead Research Organisation:
Lancaster University
Department Name: Physics
Abstract
This research is aimed at understanding the properties of the basic building blocks of the Universe (the elementary particles) and the nature of the fundamental forces which govern the interactions of these particles. In so doing, deep insights will be gained about the origin and evolution of the Universe, especially in the first moments after the Big Bang. The Lancaster research programme covers all the main types of accelerator facilities and is based on hadron collider physics with the Tevatron (Fermilab) and LHC (CERN) machines, the observation of long baseline neutrino oscillations in Japan and, in the longer term future, high energy electron-positron collisions at the International Linear Collider (ILC). All of this work will be underpinned by Lancaster's expertise in characterising and understanding the properties of heavily irradiated silicon particle detectors, in operating high performance computing facilities on the Grid and in writing offline event reconstruction software. The hadron collider physics is expected to reveal detailed properties of B hadrons (containing heavy b-quarks) including the mixing of neutral B mesons containing strange quarks, and CP violation which is related to the existence of the matter-antimatter asymmetry in the Universe. Searches for new physics at the LHC will focus on understanding the origin of mass (and the role of the Higgs boson), the existence of new symmetries of nature (e.g. supersymmetry) and extra spatial dimensions. The neutrino oscillations programme is expected to provide important information about the masses of and the amount of mixing amongst the three known species of neutrinos. If the appearance of electron neutrinos can be observed in a muon neutrino beam then it may be possible, in a further phase of the research, to establish the existence of CP violation in the neutrino sector of the Standard Model. This could have wide reaching implications for the understanding of the matter-antimatter asymmetry of the Universe. The electron-positron collider (the ILC) will enable a continuation of some of the research performed at the LHC but with a facility of greater precision and versatility. It could be especially crucial for the elucidation of the properties of the Higgs boson and supersymmetry if they exist as well as being an abundant source of top quraks.
Organisations
Publications
Aad D.
(2011)
Luminosity determination in pp collisions at vs = 7 TeV using the ATLAS detector at the LHC
in European Physical Journal C
Aad G
(2011)
Search for the Standard Model Higgs boson in the two photon decay channel with the ATLAS detector at the LHC
in Physics Letters B
Aad G
(2011)
A search for new physics in dijet mass and angular distributions in pp collisions at \sqrt{s}=7 TeV measured with the ATLAS detector
in New Journal of Physics
Aad G
(2013)
Search for t t ¯ resonances in the lepton plus jets final state with ATLAS using 4.7 fb - 1 of p p collisions at s = 7 TeV
in Physical Review D
Aad G
(2013)
Search for long-lived, multi-charged particles in pp collisions at s = 7 TeV using the ATLAS detector
in Physics Letters B
Aad G
(2013)
Search for microscopic black holes in a like-sign dimuon final state using large track multiplicity with the ATLAS detector
in Physical Review D
Aad G
(2014)
Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using s = 8 $$ \sqrt{s}=8 $$ TeV proton-proton collision data
in Journal of High Energy Physics
Aad G
(2014)
Measurement of ? c1 and ? c2 production with s $$ \sqrt{s} $$ = 7 TeV pp collisions at ATLAS
in Journal of High Energy Physics
Aad G
(2014)
Measurements of normalized differential cross sections for t t ¯ production in p p collisions at ( s ) = 7 TeV using the ATLAS detector
in Physical Review D
Aad G
(2014)
Search for Invisible Decays of a Higgs Boson Produced in Association with a Z Boson in ATLAS
in Physical Review Letters
Aad G
(2014)
Search for dark matter in events with a hadronically decaying W or Z boson and missing transverse momentum in pp collisions at vs=8 TeV with the ATLAS detector.
in Physical review letters
Aad G
(2013)
Search for displaced muonic lepton jets from light Higgs boson decay in proton-proton collisions at s = 7 TeV with the ATLAS detector
in Physics Letters B
Aad G
(2011)
Search for massive long-lived highly ionising particles with the ATLAS detector at the LHC
in Physics Letters B
Aad G
(2013)
Searches for heavy long-lived sleptons and R-hadrons with the ATLAS detector in pp collisions at s = 7 TeV
in Physics Letters B
Aad G
(2013)
Evidence for the spin-0 nature of the Higgs boson using ATLAS data
in Physics Letters B
Aad G
(2013)
A search for prompt lepton-jets in pp collisions at s = 7 TeV with the ATLAS detector
in Physics Letters B
Aad G
(2011)
Search for diphoton events with large missing transverse energy with 36 pb-1 of 7 TeV proton-proton collision data with the ATLAS detector
in The European Physical Journal C
Aad G
(2011)
Properties of jets measured from tracks in proton-proton collisions at center-of-mass energy s = 7 TeV with the ATLAS detector
in Physical Review D
Aad G
(2011)
Study of jet shapes in inclusive jet production in p p collisions at s = 7 TeV using the ATLAS detector
in Physical Review D
Aad G
(2014)
Flavor tagged time-dependent angular analysis of the B s 0 ? J / ? ? decay and extraction of ? G s and the weak phase ? s in ATLAS
in Physical Review D
Aad G
(2014)
Search for new resonances in W? and Z? final states in pp collisions at s = 8 TeV with the ATLAS detector
in Physics Letters B
Aad G
(2013)
Measurement of the azimuthal angle dependence of inclusive jet yields in Pb+Pb collisions at v(sNN)=2.76 TeV with the ATLAS detector.
in Physical review letters
Aad G
(2014)
Light-quark and gluon jet discrimination in [Formula: see text] collisions at [Formula: see text] with the ATLAS detector.
in The European physical journal. C, Particles and fields