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
Abazov V
(2008)
A combined search for the standard model Higgs boson at s = 1.96 TeV
in Physics Letters B
Collaboration T
(2014)
A neural network clustering algorithm for the ATLAS silicon pixel detector
in Journal of Instrumentation
Abazov V
(2009)
A novel method for modeling the recoil in W boson events at hadron colliders
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Aad G
(2013)
A search for high-mass resonances decaying to t + t - in pp collisions at s = 7 TeV with the ATLAS detector
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)
A search for prompt lepton-jets in pp collisions at s = 7 TeV with the ATLAS detector
in Physics Letters B
Rybar M
(2014)
Angular correlations of jets in lead-lead collisions at 2.76 TeV using the ATLAS detector at the LHC
in Nuclear Physics A
The ATLAS Collaboration
(2012)
ATLAS search for a heavy gauge boson decaying to a charged lepton and a neutrino in pp collisions at $\sqrt{s} = 7\ \mathrm{TeV}$
in The European Physical Journal C
Wosiek B
(2015)
Azimuthal anisotropies in Pb + Pb and p + Pb collisions with the ATLAS detector
in Annals of Physics
Abazov V
(2011)
Azimuthal decorrelations and multiple parton interactions in ? + 2 jet and ? + 3 jet events in p p ¯ collisions at s = 1.96 TeV
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 VM
(2011)
Bounds on an anomalous dijet resonance in W+jets production in pp collisions at vs = 1.96 TeV.
in Physical review letters
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
(2011)
Charged-particle multiplicities in pp interactions measured with the ATLAS detector at the LHC
in New Journal of Physics
Aaltonen T
(2012)
Combination of CDF and D0 measurements of the W boson helicity in top quark decays
in Physical Review D
Aaltonen T
(2013)
Combination of CDF and D0 W -Boson mass measurements
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
Abazov V
(2012)
Combination of searches for anomalous top quark couplings with 5.4 fb - 1 of p p ¯ collisions
in Physics Letters B
Abazov V
(2009)
Combination of t t ¯ cross section measurements and constraints on the mass of the top quark and its decays into charged Higgs bosons
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
(2012)
Combination of the top-quark mass measurements from the Tevatron collider
in Physical Review D
Abazov V
(2007)
Combined D0 measurements constraining the C P -violating phase and width difference in the B s 0 system
in Physical Review D
Abazov V
(2013)
Combined search for the Higgs boson with the D0 experiment
in Physical Review D
Abazov VM
(2012)
Combined search for the standard model Higgs boson decaying to bb using the D0 run II data set.
in Physical review letters
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
Abazov VM
(2014)
Constraints on models for the Higgs boson with exotic spin and parity in VH ? Vbb final states.
in Physical review letters
Abazov V
(2010)
Dependence of the t t ¯ production cross section on the transverse momentum of the top quark
in Physics Letters B
Abazov V
(2011)
Determination of the pole and MS ¯ masses of the top quark from the t t ¯ cross section
in Physics Letters B
Abazov V
(2009)
Determination of the strong coupling constant from the inclusive jet cross section in p p ¯ collisions at s = 1.96 TeV
in Physical Review D
Abazov VM
(2011)
Determination of the width of the top quark.
in Physical review letters
Abreu P.
(2011)
Determination of |Vcb?from the semileptonic decay B0 ? D*-l+?
in European Physical Journal C
Abazov V
(2011)
Direct measurement of the mass difference between top and antitop quarks
in Physical Review D
Abazov VM
(2009)
Direct measurement of the mass difference between top and antitop quarks.
in Physical review letters
Abazov VM
(2009)
Direct measurement of the W boson width.
in Physical review letters
Abazov VM
(2007)
Direct observation of the strange b baryon Xib-.
in Physical review letters
Abazov V
(2014)
Double parton interactions in ? + 3 jet and ? + b / c jet + 2 jet events in p p ¯ collisions at s = 1.96 TeV
in Physical Review D
Abazov V
(2010)
Double parton interactions in ? + 3 jet events in p p ¯ collisions at s = 1.96 TeV
in Physical Review D
Gabaldón C
(2011)
Drift Time measurement in the ATLAS Liquid Argon electromagnetic calorimeter using cosmic muons
in Journal of Physics: Conference Series
Aad G
(2013)
Dynamics of isolated-photon plus jet production in pp collisions at s = 7 TeV with the ATLAS detector
in Nuclear Physics B
Aad G
(2014)
Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data
in The European Physical Journal C
Abazov V
(2014)
Electron and photon identification in the D0 experiment
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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
Abazov V
(2008)
Erratum to: "Measurement of the isolated photon cross section in p p ¯ collisions at s = 1.96 TeV " [Phys. Lett. B 639 (2006) 151]
in Physics Letters B
Abazov V
(2009)
Erratum to: "Search for particles decaying into a Z boson and a photon in p p ¯ collisions at s = 1.96 TeV " [Phys. Lett. B 641 (2006) 415]
in Physics Letters B
Abazov V
(2008)
Erratum: Measurement of Inclusive Differential Cross Sections for ? ( 1 S ) Production in p p ¯ Collisions at s = 1.96 TeV [Phys. Rev. Lett. 94 , 232001 (2005)]
in Physical Review Letters
Abazov V
(2008)
Erratum: Measurement of the W W Production Cross Section in p p ¯ Collisions at s = 1.96 TeV [Phys. Rev. Lett. 94 , 151801 (2005)]
in Physical Review Letters
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
(2010)
Evidence for an anomalous like-sign dimuon charge asymmetry
in Physical Review D
Abazov VM
(2010)
Evidence for an anomalous like-sign dimuon charge asymmetry.
in Physical review letters
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