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 G
(2014)
Search for Higgs boson decays to a photon and a Z boson in pp collisions at s = 7 and 8 TeV with the ATLAS detector
in Physics Letters B
Aad G
(2011)
Search for supersymmetry using final states with one lepton, jets, and missing transverse momentum with the ATLAS detector in vs=7 TeV pp collisions.
in Physical review letters
Aad G
(2014)
Measurement of the top quark pair production charge asymmetry in proton-proton collisions at $ \sqrt{s} $ = 7 TeV using the ATLAS detector
in Journal of High Energy Physics
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
(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
(2014)
Measurement of the low-mass Drell-Yan differential cross section at s $$ \sqrt{s} $$ = 7 TeV using the ATLAS detector
in Journal of High Energy Physics
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
(2011)
Measurement of the ? ( 1 S ) production cross-section in pp collisions at s = 7 TeV in ATLAS
in Physics Letters B
Aad G
(2014)
Measurement of the [Formula: see text] production cross-section using [Formula: see text] events with [Formula: see text]-tagged jets in [Formula: see text] collisions at [Formula: see text] and 8 TeV with the ATLAS detector.
in The European physical journal. C, Particles and fields
Aad G
(2011)
Measurement of the W+ W- cross section in sqrt(s) = 7 TeV pp collisions with ATLAS.
in Physical review letters
Aad G
(2013)
Measurements of W ? and Z ? production in p p collisions at s = 7 TeV with the ATLAS detector at the LHC
in Physical Review D
Aad G
(2014)
Search for microscopic black holes and string balls in final states with leptons and jets with the ATLAS detector at s $$ \sqrt{s} $$ = 8 TeV
in Journal of High Energy Physics
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
(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 the lepton flavor violating decay Z ? e µ in p p collisions at s = 8 TeV with the ATLAS detector
in Physical Review D
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
(2014)
Electron reconstruction and identification efficiency measurements with the ATLAS detector using the 2011 LHC proton-proton collision data
in The European Physical Journal C
Aad G
(2011)
Search for an excess of events with an identical flavour lepton pair and significant missing transverse momentum in $\sqrt{s}=7$ TeV proton-proton collisions with the ATLAS detector
in The European Physical Journal C
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
(2011)
Search for neutral MSSM Higgs bosons decaying to t + t - pairs in proton-proton collisions at s = 7 TeV with the ATLAS detector
in Physics Letters B
Aad G
(2014)
Measurement of the production cross-section of ?(2S) ? J/?(?µ + µ - )p + p - in pp collisions at s $$ \sqrt{s} $$ = 7 TeV at ATLAS
in Journal of High Energy Physics
Aad G
(2014)
Search for top quark decays t ? qH with H ? ?? using 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
(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)
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
(2011)
Measurement of dijet azimuthal decorrelations in pp collisions at sqrt(s)=7 TeV.
in Physical review letters
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
(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
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
Aaltonen T
(2013)
Higgs boson studies at the Tevatron
in Physical Review D
Aaltonen T
(2012)
Combination of the top-quark mass measurements from the Tevatron collider
in Physical Review D
Aaltonen T
(2010)
Combined Tevatron upper limit on g g ? H ? W + W - and constraints on the Higgs boson mass in fourth-generation fermion models
in Physical Review D
Aaltonen T
(2014)
Combination of measurements of the top-quark pair production cross section from the Tevatron Collider
in Physical Review D
Aaltonen T
(2012)
Combination of CDF and D0 measurements of the W boson helicity in top quark decays
in Physical Review D
Aaltonen T
(2010)
Combination of Tevatron searches for the standard model Higgs boson in the W+W- decay mode.
in Physical review letters
Aaltonen T
(2013)
Combination of CDF and D0 W -Boson mass measurements
in Physical Review D
Aaltonen T
(2012)
Search for neutral Higgs bosons in events with multiple bottom quarks at the Tevatron
in Physical Review D
Aaltonen T
(2012)
Evidence for a particle produced in association with weak bosons and decaying to a bottom-antibottom quark pair in higgs boson searches at the tevatron.
in Physical review letters
Abazov V
(2013)
Search for charged massive long-lived particles at s = 1.96 TeV
in Physical Review D
Abazov V
(2006)
Measurement of the C P -violation parameter of B 0 mixing and decay with p p ¯ ? µ µ X data
in Physical Review D
Abazov V
(2010)
b-Jet identification in the D0 experiment
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Abazov V
(2013)
Search for Higgs boson production in oppositely charged dilepton and missing energy final states in 9.7 fb - 1 of p p ¯ collisions at s = 1.96 TeV
in Physical Review D