Programme of Research in Experimental Particle Physics at the University of Warwick, 2006-2011
Lead Research Organisation:
University of Warwick
Department Name: Physics
Abstract
The scope of the proposed research lies in two distinct areas: the physics of particles containing the beauty quark, and the physics of neutrinos: 1). We aim to further our research into matter/anti-matter asymmetry (CP Violation) with Beauty mesons at the BABAR experiment. This is important, because we have shown that the leading source of CP violation at low energies is consistent with the Standard Model mechanism of CP violation. However, cosmological considerations indicate that there should be other sources of CP violation in Nature, so we aim to make further sensitive tests with beauty mesons, in order to see if any evidence for additional sources of CP violation in Nature may appear here. 2). The elucidation of the properties of neutrinos. These are very light, neutral particles which are emitted, for example, by the sun, and in radioactive beta decay. They have recently been found to oscillate, ie. transmute from one type to another, while they propagate. We propose to build part of the T2K experiment, which aims to determine the details of this behaviour. In particular, it aims to establish the rate and extent of oscillations between muon- and electron-neutrinos, and to derive related information on neutrino masses. We also propose to continue research and development on the COBRA experiment, which aims to identify neutrinoless double beta decays in CdZnTe. This would provide information on the absolute mass scale of neutrinos and establish the neutrinos as Majorana particles, equivalent to their own anti-particles. We will also continue research and development on a future neutrino factory, and on a new measurement of the absolute mass of the neutrino.
Publications
Harrison, P.F. And Scott, W.G.
(2009)
A Flavour-Symmetric Perspective on Neutrino Mixing
Back J
(2008)
ACTIVIA: Calculation of isotope production cross-sections and yields
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Lees J
(2013)
Branching fraction measurement of B + ? ? l + ? decays
in Physical Review D
Stewart D
(2008)
CdZnTe room-temperature semiconductor operation in liquid scintillator
in Journal of Instrumentation
Lightfoot P
(2008)
Characterisation of a silicon photomultiplier device for applications in liquid argon based neutrino physics and dark matter searches
in Journal of Instrumentation
Green A
(2008)
Consequences of statistical sense determination for WIMP directional detection
in Physical Review D
Aaltonen T
(2015)
Constraints on models of the Higgs boson with exotic spin and parity using decays to bottom-antibottom quarks in the full CDF data set.
in Physical review letters
Petricca F
(2006)
CRESST: First results with the phonon-light technique
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Xing Z
(1997)
D 0 - D ¯ 0 mixing and CP violation in neutral D -meson decays
in Physical Review D
Aubert B
(2009)
Dalitz plot analysis of B ± ? p ± p ± p ± decays
in Physical Review D
Westphal W.
(2006)
Dark-matter search with CRESST
in CZECHOSLOVAK JOURNAL OF PHYSICS
Martyniak J
(2017)
Data management and database framework for the MICE experiment
in Journal of Physics: Conference Series
Ramachers Y
(2007)
Energy resolution improvement in room-temperature CZT detectors
in Journal of Instrumentation
Lees J
(2014)
Evidence for the decay B 0 ? ? ? and search for B 0 ? ? ?
in Physical Review D
Lees J
(2013)
Evidence of B + ? t + ? decays with hadronic B tags
in Physical Review D
Abe K
(2013)
Evidence of electron neutrino appearance in a muon neutrino beam
in Physical Review D
Alner G
(2007)
First limits on WIMP nuclear recoil signals in ZEPLIN-II: A two-phase xenon detector for dark matter detection
in Astroparticle Physics
Bloxham T
(2007)
First results on double ß-decay modes of Cd, Te, and Zn Isotopes
in Physical Review C
Harrison, P.F. And Roythorne, D.R.J. And Scott, W.G.
(2008)
Flavour Permutation Symmetry and Fermion Mixing
Åström J
(2006)
Fracture processes observed with a cryogenic detector
in Physics Letters A
Åström J
(2006)
Fracture processes studied in CRESST
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Harrison, P.F. And Roythorne, D.R.J. And Scott, W.G.
(2009)
Is the Unitarity Triangle Right?
Lees J
(2013)
Measurement of an excess of B ¯ ? D ( * ) t - ? ¯ t decays and implications for charged Higgs bosons
in Physical Review D
Lees J
(2013)
Measurement of C P -violating asymmetries in B 0 ? ( ? p ) 0 decays using a time-dependent Dalitz plot analysis
in Physical Review D
Lees J
(2013)
Measurement of C P asymmetries and branching fractions in charmless two-body B -meson decays to pions and kaons
in Physical Review D
Aaltonen T
(2015)
Measurement of differential production cross sections for Z / ? * bosons in association with jets in p p ¯ collisions at s = 1.96 TeV
in Physical Review D
Abe K
(2013)
Measurement of neutrino oscillation parameters from muon neutrino disappearance with an off-axis beam.
in Physical review letters
Lees J
(2013)
Measurement of the B + ? ? l + ? branching fraction with semileptonically tagged B mesons
in Physical Review D
Lees J
(2013)
Measurement of the D * ( 2010 ) + natural linewidth and the D * ( 2010 ) + - D 0 mass difference
in Physical Review D
Lees JP
(2013)
Measurement of the D*(2010)+ meson width and the D*(2010)+ - D0 mass difference.
in Physical review letters
Lees J
(2013)
Measurement of the e + e - ? p p ¯ cross section in the energy range from 3.0 to 6.5 GeV
in Physical Review D
Abe K
(2013)
Measurement of the inclusive
charged current cross section on carbon in the near detector of the T2K experiment
in Physical Review D
Abe K
(2013)
Measurement of the inclusive ? µ charged current cross section on carbon in the near detector of the T2K experiment
in Physical Review D
Lees J
(2013)
Measurement of the mass of the D 0 meson
in Physical Review D
Bayes R
(2017)
Measurements of muon multiple scattering in MICE
in Journal of Physics: Conference Series
Ramachers Y
(2009)
Neutrinoless Double Beta Decay and Absolute Mass Measurements
in Nuclear Physics A
Lees J
(2013)
Observation of direct C P violation in the measurement of the Cabibbo-Kobayashi-Maskawa angle ? with B ± ? D ( * ) K ( * ) ± decays
in Physical Review D
Abe K
(2014)
Observation of electron neutrino appearance in a muon neutrino beam.
in Physical review letters
Lightfoot P
(2009)
Optical readout tracking detector concept using secondary scintillation from liquid argon generated by a thick gas electron multiplier
in Journal of Instrumentation
Green A
(2007)
Optimizing WIMP directional detectors
in Astroparticle Physics
BACK J
(2009)
Pion yields
Harrison P
(2007)
Plaquette invariants and the flavour symmetric description of quark and neutrino mixings
in Physics Letters B
Lees J
(2013)
Precision measurement of the e + e - ? K + K - ( ? ) cross section with the initial-state radiation method at BABAR
in Physical Review D
Lees J
(2013)
Production of charged pions, kaons, and protons in e + e - annihilations into hadrons at s = 10.54 GeV
in Physical Review D
Stewart D
(2007)
Radiation shielding for underground low-background experiments
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Harrison P
(2006)
Real invariant matrices and flavour-symmetric mixing variables with emphasis on neutrino oscillations
in Physics Letters B
Lees J
(2013)
Search for a light Higgs boson decaying to two gluons or s s ¯ in the radiative decays of ? ( 1 S )
in Physical Review D
Lees J
(2013)
Search for a low-mass scalar Higgs boson decaying to a tau pair in single-photon decays of ? ( 1 S )
in Physical Review D
Lees J
(2013)
Search for B ? K ( * ) ? ? ¯ and invisible quarkonium decays
in Physical Review D
Description | LHcb |
Organisation | European Organization for Nuclear Research (CERN) |
Department | Large Hadron Collider Beauty Experiment (LHCb) |
Country | Switzerland |
Sector | Public |
PI Contribution | The research team at The University of Warwick have provides expertise and personnel to help with the continued operation and data collection at LHcb as well as data analysis and interpretation of results collected by Warwick. |
Collaborator Contribution | Members of the LHcb team have provided resources and experimental time to allow for the collection of data which has been used by members of Warwick to produce output for LHcb, with the appropriate acknowledgements to Warwick staff. |
Impact | Any publication which indicates a LHcb Collaboration or authored by 'Aaij, R. and others' |
Start Year | 2008 |
Description | MICE |
Organisation | International Muon Ionization Cooling Experiment |
Country | United Kingdom |
Sector | Public |
PI Contribution | The research team at The University of Warwick have provides expertise and personnel to help with the continued operation and data collection at MICE as well as data analysis and interpretation of results collected by Warwick. |
Collaborator Contribution | Members of the MICE team have provided resources and experimental time to allow for the collection of data which has been used by members of Warwick to produce output for MICE, with the appropriate acknowledgements to Warwick staff. |
Impact | Publications with reference MICE experimental data |
Start Year | 2006 |
Description | Neutrino Factory |
Organisation | Rutherford Appleton Laboratory |
Country | United Kingdom |
Sector | Academic/University |
PI Contribution | The research team at The University of Warwick have provides expertise and personnel to help with the continued Research and development into the Neutrino Factory as well as data analysis and interpretation of results collected by Warwick and other institutions. |
Collaborator Contribution | Members of the Neutrino Factory team have provided resources and ideas to allow for the development of new techniques which have been used by members of Warwick to produce new insights into techniques and equipment. |
Impact | Publication which make reference to the Neutrino Factory |
Description | T2K |
Organisation | T2K Collaboration |
Country | Global |
Sector | Academic/University |
PI Contribution | The research team at The University of Warwick have provides expertise and personnel to help with the continued operation and data collection at ATLAS as well as data analysis and interpretation of results collected by Warwick. |
Collaborator Contribution | Members of the T2K team have provided resources and experimental time to allow for the collection of data which has been used by members of Warwick to produce output for T2K, with the appropriate acknowledgements to Warwick staff. |
Impact | All publications which have used T2K data. |