Theoretical Particle Physics Research

Lead Research Organisation: University of Oxford
Department Name: Oxford Physics

Abstract

Our overall aim is to elucidate the nature of matter and its fundamental interactions via a variety of phenomenological and theoretical studies. Of crucial importance will be the new results coming from the Large Hadron Collider (LHC) at CERN. The proposed research will improve our ability to predict the effects of the strong interactions (QCD) on the processes that will be studied at the LHC and develop efficient methods to determine the properties of any new states of matter discovered there. Both analytical and numerical methods will be used to study the properties of hadrons, strongly interacting bound states of quarks. Our research will seek to determine what lies beyond the Standard Model of the strong, weak and electromagnetic interactions, with the ultimate goal of providing a fully unified theory, including gravity. The most promising candidate theories will be studied, including Grand and superstring unification and theories with additional space dimensions. Laboratory, astrophysical and cosmological implications will be analysed to determine the most sensitive experimental tests of these theories. We hope these studies will lead to a complete understanding of the origin of mass, including an understanding of the quark, charged lepton and neutrino masses, mixing angles and CP violation, as well as of the nature of dark matter. In addition to having direct relevance to the LHC program, our research will have relevance to present and future neutrino and astroparticle experiments and to astrophysical and cosmological studies. In particular a concerted effort will be made to understand the nature of the dark matter and optimise strategies for detecting both direct and indirect signals. The implications of particle physics models for early universe processed such as inflation will also be studied.

Publications

10 25 50

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Cooper-Sarkar A (2011) The high energy neutrino cross-section in the Standard Model and its uncertainty in Journal of High Energy Physics

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Collaboration T (2013) Bounds on the density of sources of ultra-high energy cosmic rays from the Pierre Auger Observatory in Journal of Cosmology and Astroparticle Physics

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Colin J (2017) High-redshift radio galaxies and divergence from the CMB dipole in Monthly Notices of the Royal Astronomical Society

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Carena M (2012) Higgs production in a warped extra dimension in Journal of High Energy Physics

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Campbell J (2013) W and Z bosons in association with two jets using the POWHEG method in Journal of High Energy Physics

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Bursa F (2013) SO(2N) and SU(N) gauge theories in 2 + 1 dimensions in Journal of High Energy Physics

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Buchbinder E (2014) A heterotic standard model with B - L symmetry and a stable proton in Journal of High Energy Physics

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Buchbinder E (2014) The moduli space of heterotic line bundle models: a case study for the tetra-quadric in Journal of High Energy Physics

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Brod J (2013) Constraints on CP-violating Higgs couplings to the third generation in Journal of High Energy Physics

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Bonnivard V (2015) Dark matter annihilation and decay in dwarf spheroidal galaxies: the classical and ultrafaint dSphs in Monthly Notices of the Royal Astronomical Society

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Bobeth C (2014) On new physics in ?G d in Journal of High Energy Physics

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Beringer J (2012) Review of Particle Physics in Physical Review D

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Belyaev A (2011) Mixed dark matter from technicolor in Physical Review D

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Baryakhtar M (2013) Axion mediation in Journal of High Energy Physics

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Banfi A (2012) Higgs- and Z-boson production with a jet veto. in Physical review letters

 
Description Our overall aim is to elucidate the nature of matter and its fundamental interactions via a variety of phenomenological and theoretical studies. It was anticipated in the proposal that new results coming from the Large Hadron Collider (LHC) at CERN would be of crucial importance and the proposed research was intended to improve our ability to predict the effects of the strong interactions (QCD) on the processes that will be studied at the LHC and develop efficient methods to determine the properties of any new states of matter discovered there. This expectation was more than adequately fulfilled with the discovery of the Higgs boson - responsible for giving mass to all known fundamental particles in the Standard Model of the strong, weak and electromagnetic interactions.

Our research also seeks to determine what lies beyond the Standard Model, with the ultimate goal of providing a fully unified theory, including gravity. Experimental progress here has not been as dramatic, in fact the Standard Model has been amazingly successful at explaining all laboratory measurements. Nevertheless there must be new physics, if only to account for the observed universe with its asymmetry between matter and antimatter, preponderance of dark over luminous matter, and inhomogeneities which grow under gravity into the large-scale structure of galaxies, clusters and superclusters ... none of which can be explained in the framework of the Standard Model. We have continued to make progress in studying promising candidate theories, including unified theories and theories with additional space dimensions.
Exploitation Route Our work forms part of a collective effort by theoretical physicists all over the world - each generation builds on the work of those who came before.
Sectors Education

URL http://www2.physics.ox.ac.uk/research/particle-theory
 
Description An innovative website to explain `Why String Theory?' (http://whystringtheory.com/) has received over 100,000 unique visitors.
Sector Education
Impact Types Cultural

 
Description Consolidated grant
Amount £717,699 (GBP)
Funding ID ST/P000770/1 
Organisation Science and Technologies Facilities Council (STFC) 
Sector Public
Country United Kingdom
Start 10/2017 
End 09/2020