Exploring the Limits of the Standard Model and Beyond
Lead Research Organisation:
University of Southampton
Department Name: Sch of Physics and Astronomy
Abstract
Experiments at the Large Hadron Collider (LHC) have recently began taking data and over the next decade will have a very major impact on particle physics. They will confirm or disprove the Higgs field as the underlying mechanism for the generation of mass and it is to be expected that there will be signatures of physics 'Beyond the Standard Model'. The Standard Model of Particle Physics has been remarkably (and frustratingly) successful and yet leaves in its wake the following well known puzzles: the origin of mass, the quest for unification and the problem of flavour. This proposal is to support the research of the theoretical particle physicists at the University of Southampton which addresses these questions. The main goal is to provide the theoretical ideas and techniques which will help our experimental colleagues discover the Higgs Boson and signatures of new physics, to influence the analyses which will be performed and to contribute to the theoretical interpretation of the experimental data. There are many aspects to this work and we now briefly review some of these and explain the Southampton group's role. The experimental discovery signatures of the Higgs Boson, and indeed of the particles present in theories beyond the standard model, depend on the masses of these particles and on the new theories. In Southampton we have expertise and experience in devising strategies for these searches and also in developing theories of new physics. We have close links to the UK experimenters working at the LHC and will work closely with them in their analyses. Indeed, together with the Rutherford-Appleton Laboratory (RAL), we have founded the NExT (New Experimental Theoretical Interactions) Institute with the close collaboration of theorists and experimenters as its main goal, and NExT has recently been expanded to include Sussex and Royal Holloway. The results from the analyses in turn will constrain the new theories, for example by confirming or disproving the idea of supersymmetry, and guide us in unravelling the next level of fundamental physics. These are remarkably exciting times! Of course, in order to be confident that we have observed a signal of new physics we have to be sure that what we are seeing is not simply a subtle effect of the standard model. Frequently, as a result of our limited ability to quantify the effects of the strong nuclear force, this is difficult to do. In Southampton we have outstanding expertise in quantum chromodynamics, QCD, the theory of these strong interactions. This includes a major research programme using state-of-the-art supercomputers to compute these effects for a wide variety of physical processes. A major component of our future programme is to expand and develop the activity of numerical simulations on the IBM BlueGene/Q supercomputers which will be commissioned in mid-2011. It is likely that some (or perhaps all) new particles will be too heavy to be observed directly at the LHC. In that case their presence will have to be deduced indirectly, by observing deviations from Standard Model predictions for 'rare' processes. The programme of numerical simulations will be central in establishing these deviations as will the analytical techniques which we are using. We also have a wider interest in the behaviour of strongly interacting systems which could play a role in physics beyond the standard model and in cosmology. For example we will study composite higgs models and variants of QCD with very different behaviour. Such systems are also deeply connected to theories of gravitation through a 'duality' which provides an alternative description of strong coupling in terms of general relativity, string theory and black hole physics - these studies will shed light on physics from phase transitions in QCD to quantum gravity.
Organisations
Publications
Zanotti J
(2010)
Determining the Kl3 form factors directly at zero momentum transfer
Boyle P.A.
(2011)
Non-perturbative running and renormalization of kaon four-quark operators with nf = 2+1 domain-wall fermions
in Proceedings of Science
Blum T
(2011)
K to p p decay amplitudes from lattice QCD
in Physical Review D
Sachrajda Christopher
(2011)
Phenomenology from the Lattice
in arXiv e-prints
Aoki Y
(2011)
Continuum limit of B K from 2 + 1 flavor domain wall QCD
in Physical Review D
Cooper I
(2012)
A4 × SU(5) SUSY GUT of flavour with trimaximal neutrino mixing
in Journal of High Energy Physics
Hagedorn C
(2012)
SUSY S4 x SU(5) revisited
King S
(2012)
Tri-bimaximal-Cabibbo Mixing
Belyaev A
(2012)
Multi Higgs and Vector boson production beyond the Standard Model
King S
(2012)
NMSSM Higgs Benchmarks Near 125 GeV
Cooper I
(2012)
A4xSU(5) SUSY GUT of Flavour with Trimaximal Neutrino Mixing
Hagedorn C
(2012)
SUSY S 4 × SU ( 5 ) revisited
in Physics Letters B
Belyaev A
(2012)
Discovering Minimal Universal Extra Dimensions (MUED) at the LHC
King S
(2012)
Tri-bimaximal-Cabibbo mixing
in Physics Letters B
RBC Collaboration
(2012)
Domain Wall QCD with Near-Physical Pions
Garron N.
(2012)
Weak Matrix Elements of beyond the Standard Model ?s = 2 four-quark operators from nf = 2+1 Domain-Wall fermions
in Proceedings of Science
Blum T
(2012)
Lattice determination of the K ? ( p p ) I = 2 decay amplitude A 2
in Physical Review D
King S
(2012)
Warm Dark Matter from keVins
in Journal of Cosmology and Astroparticle Physics
Belyaev A
(2012)
Discovering $E_6$ SUSY models in gluino cascade decays at the LHC
Cooper I
(2012)
A Golden A_5 Model of Leptons with a Minimal NLO Correction
Athron P
(2012)
Constrained exceptional supersymmetric standard model with a Higgs signal near 125 GeV
in Physical Review D
King S
(2012)
NMSSM Higgs benchmarks near 125 GeV
in Nuclear Physics B
Blum T
(2012)
K?(pp)(I=2) decay amplitude from lattice QCD.
in Physical review letters
King S
(2012)
Warm Dark Matter from keVins
Sivalingam K
(2012)
Kaon semileptonic decays near the physical point
Callaghan J
(2012)
E6 Models from F-theory
King S
(2012)
Natural NMSSM Higgs Bosons
Boyle P
(2012)
Kaon semileptonic decays near the physical point
Belyaev A
(2013)
Discovering Minimal Universal Extra Dimensions (MUED) at the LHC
in Journal of High Energy Physics
Christ N
(2013)
Long distance contribution to the K L - K S mass difference
in Physical Review D
King S
(2013)
Lepton mixing predictions from ? ( 6 n 2 ) family symmetry
in Physics Letters B
Callaghan J
(2013)
E6 models from F-theory
in Journal of High Energy Physics
Cooper I
(2013)
A golden A 5 model of leptons with a minimal NLO correction
in Nuclear Physics B
Ding G
(2013)
Spontaneous CP violation from vacuum alignment in S 4 models of leptons
in Journal of High Energy Physics
Belyaev A
(2013)
Discovering E 6 supersymmetric models in gluino cascade decays at the LHC
in Physical Review D
King S
(2013)
Natural NMSSM Higgs bosons
in Nuclear Physics B
Callaghan J
(2013)
Gauge coupling unification in E 6 F-theory GUTs with matter and bulk exotics from flux breaking
in Journal of High Energy Physics
Antusch S
(2013)
Spontaneous C P violation in A 4 × S U ( 5 ) with constrained sequential dominance 2
in Physical Review D
King S
(2013)
A Grand Flavour Model
in Nuclear Physics B
King SF
(2013)
Neutrino mass and mixing with discrete symmetry.
in Reports on progress in physics. Physical Society (Great Britain)
Belyaev A
(2013)
Little Z' Models
Belyaev A
(2013)
Little Z ' models
in Physical Review D
Description | Grant ended 2011 -no further findings |
Exploitation Route | As above |
Sectors | Other |
Description | No further progress, grant ended in 2011 |
First Year Of Impact | 2009 |
Sector | Education |
Impact Types | Societal |