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
(2014)
Study of heavy-flavor quarks produced in association with top-quark pairs at s = 7 TeV using the ATLAS detector
in Physical Review D
Aad G
(2014)
Search for a multi-Higgs-boson cascade in W + W - b b ¯ events with the ATLAS detector in p p collisions at s = 8 TeV
in Physical Review D
Aad G
(2010)
Performance of the ATLAS detector using first collision data
in Journal of High Energy Physics
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
(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)
Search for high-mass dilepton resonances in p p collisions at s = 8 TeV with the ATLAS detector
in Physical Review D
Aad G
(2013)
Search for new phenomena in events with three charged leptons at s = 7 TeV with the ATLAS detector
in Physical Review D
Aad G
(2011)
Search for dilepton resonances in pp collisions at vs=7 TeV with the ATLAS detector.
in Physical review letters
Aad G
(2014)
Measurement of the underlying event in jet events from 7 $$\text {TeV}$$ TeV proton-proton collisions with the ATLAS detector
in The European Physical Journal C
Aad G
(2010)
Readiness of the ATLAS liquid argon calorimeter for LHC collisions
in The European Physical Journal C
Aad G
(2014)
Measurement of the production cross section of prompt J/? mesons in association with a W ± boson in pp collisions at $ \sqrt{s} $ = 7 TeV with the ATLAS detector
in Journal of High Energy Physics
Aad G
(2011)
Search for diphoton events with large missing transverse energy in 7 TeV proton-proton collisions with the ATLAS detector.
in Physical review letters
Aad G
(2011)
Charged-particle multiplicities in pp interactions measured with the ATLAS detector at the LHC
in New Journal of Physics
Aad G
(2011)
Search for supersymmetric particles in events with lepton pairs and large missing transverse momentum in $\sqrt{s}=7~\mbox{TeV}$ proton-proton collisions with the ATLAS experiment
in The European Physical Journal C
Aad G
(2013)
Single hadron response measurement and calorimeter jet energy scale uncertainty with the ATLAS detector at the LHC
in The European Physical Journal C
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)
Measurement of the Z ? t t cross section with the ATLAS detector
in Physical Review D
Aad G
(2014)
Search for dark matter in events with a Z boson and missing transverse momentum in p p collisions at s = 8 TeV with the ATLAS detector
in Physical Review D
Aad G
(2014)
Measurements of fiducial and differential cross sections for Higgs boson production in the diphoton decay channel at s = 8 $$ \sqrt{s}=8 $$ TeV with ATLAS
in Journal of High Energy Physics
Aad G
(2010)
Charged-particle multiplicities in pp interactions at s = 900 GeV measured with the ATLAS detector at the LHC
in Physics Letters B
Aad G
(2014)
Measurement of the total cross section from elastic scattering in pp collisions at s = 7 TeV with the ATLAS detector
in Nuclear Physics B
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
(2014)
Measurement of the Z/? * boson transverse momentum distribution in pp collisions at s = 7 $$ \sqrt{s}=7 $$ TeV with the ATLAS detector
in Journal of High Energy Physics
Aad G
(2014)
Measurement of the production of a W boson in association with a charm quark in pp collisions at $ \sqrt{s} $ = 7 TeV with the ATLAS detector
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
(2013)
Search for a heavy narrow resonance decaying to eµ, et, or µt with the ATLAS detector in s = 7 TeV pp collisions at the LHC
in Physics Letters B
Aad G
(2011)
Search for quark contact interactions in dijet angular distributions in pp collisions at s = 7 TeV measured with the ATLAS detector
in Physics Letters B
Aad G
(2012)
Search for diphoton events with large missing transverse momentum in 7 TeV proton-proton collision data with the ATLAS detector
in Physics Letters B
Aad G
(2014)
Search for supersymmetry at $\sqrt{s}$ = 8 TeV in final states with jets and two same-sign leptons or three leptons with the ATLAS detector
in Journal of High Energy Physics
Aad G
(2011)
Search for a standard model Higgs boson in the H?ZZ?l(+)l(-)?? decay channel with the ATLAS detector.
in Physical review letters
Aad G
(2010)
Measurement of the W ? l? and Z/? * ? ll production cross sections in proton-proton collisions at $ \sqrt {s} = 7\;{\text{TeV}} $ with the ATLAS detector
in Journal of High Energy Physics
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
(2011)
Measurement of the inclusive isolated prompt photon cross-section in pp collisions at s = 7 TeV using 35 pb - 1 of ATLAS data
in Physics Letters B
Aad G
(2013)
Search for long-lived stopped R -hadrons decaying out of time with p p collisions using the ATLAS detector
in Physical Review D
Aad G
(2014)
Evidence for electroweak production of W±W±jj in pp collisions at sqrt[s] = 8 TeV with the ATLAS detector.
in Physical review letters
Aad G
(2014)
Search for supersymmetry in events with four or more leptons in s = 8 TeV p p collisions with the ATLAS detector
in Physical Review D
Aad G
(2014)
Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data
in The European Physical Journal C
Aad G
(2011)
Measurement of the transverse momentum distribution of Z / ? ? bosons in proton-proton collisions at s = 7 TeV with the ATLAS detector
in Physics Letters B
Aad G
(2011)
Measurement of the W+ W- cross section in sqrt(s) = 7 TeV pp collisions with ATLAS.
in Physical review letters