The Lancaster, Manchester, Sheffield Consortium for Fundamental Physics: Particle Physics, From the Universe to the LHC
Lead Research Organisation:
University of Manchester
Department Name: Physics and Astronomy
Abstract
Particle physics is all about understanding the elementary building blocks of nature and their interactions. Over the years, physicists have developed the Standard Model of particle physics, which is extremely successful in describing a very wide range of natural phenomena from things as basic as how light works and why atoms form through to the complicated workings inside stars and the synthesis of nuclei in the first few minutes after the Big Bang. However, we know that the Standard Model is not the whole story for it leaves many questions unanswered. Our proposal focuses on these unanswered questions and the way that scientists hope to address them in the coming years using experiments like the Large Hadron Collider (LHC) or observations like those that will be made using the Planck satellite.
The discovery at the LHC of a Higgs boson is a major milestone in our quest to understand the origin of mass. It is certainly not, however, the whole story. The LHC experiments are working hard to measure the properties of the particle they have discovered. They are also searching for new particles such as those predicted by supersymmetry. If supersymmetry is discovered then it offers the hope to explain the origin of the Dark Matter that makes up a large fraction of the material that is known to exist in the Universe. The scientists in our consortium will explore the theory of supersymmetry and dark matter. We will use data from experiments like the LHC to identify which of the many possible variants of supersymmetry are allowed by the data and to suggest new ways to explore those models in experiments. Any "new physics" produced at the LHC will be produced as a result of smashing two protons into each other, a very complicated environment, usually in association with "jets" of other particles. Members of our consortium will explore how we can make use of these jets to learn more about the associated new physics: the better we understand the environment in which new physics occurs, the more we are able to learn about the new physics itself. This is a complicated business that often necessitates computer simulations of particle collisions. Our members are experts in these simulations and have plans on how the make them more accurate, which is necessary if we are to make the most of the exciting data from the LHC.
The Standard Model of particle physics is also insufficient when it comes to explaining the early history of the Universe, when it was hot and dense. The evidence is now very strong that the history began with an era of accelerating expansion, called inflation. We are experts on inflation and its consequences. Inflation makes the Universe featureless, except for tiny quantum fluctuations that cause the density of matter and energy in the Universe to vary with position. These initially small variations grow to become observable effects. One effect is the formation of the billions of galaxies that populate the night sky. Another is to leave a tiny imprint on the cosmic microwave background radiation (CMB), a faint hum of microwave radiation in which the Universe is bathed. The CMB is being studied in exquisite detail by the Planck satellite, which was launched in 2009. We are at the forefront of interpreting the Planck data in the hope of pinning down which of the various theories of the early universe are ruled out and which remain viable. The deficiencies of the Standard Model extend still further for it does not explain the amount nor even the existence of ordinary matter. Our scientists will use this to constrain possible physics beyond the Standard Model and to do that they need to master the dynamics of the Universe shortly after the end of inflation. Last but not least, we hope to understand better the mysterious "Dark Energy" that drives the current and future acceleration of the Universe: one possibility is that it is because Einstein's theory of gravity is not quite right and that is something we will explore.
The discovery at the LHC of a Higgs boson is a major milestone in our quest to understand the origin of mass. It is certainly not, however, the whole story. The LHC experiments are working hard to measure the properties of the particle they have discovered. They are also searching for new particles such as those predicted by supersymmetry. If supersymmetry is discovered then it offers the hope to explain the origin of the Dark Matter that makes up a large fraction of the material that is known to exist in the Universe. The scientists in our consortium will explore the theory of supersymmetry and dark matter. We will use data from experiments like the LHC to identify which of the many possible variants of supersymmetry are allowed by the data and to suggest new ways to explore those models in experiments. Any "new physics" produced at the LHC will be produced as a result of smashing two protons into each other, a very complicated environment, usually in association with "jets" of other particles. Members of our consortium will explore how we can make use of these jets to learn more about the associated new physics: the better we understand the environment in which new physics occurs, the more we are able to learn about the new physics itself. This is a complicated business that often necessitates computer simulations of particle collisions. Our members are experts in these simulations and have plans on how the make them more accurate, which is necessary if we are to make the most of the exciting data from the LHC.
The Standard Model of particle physics is also insufficient when it comes to explaining the early history of the Universe, when it was hot and dense. The evidence is now very strong that the history began with an era of accelerating expansion, called inflation. We are experts on inflation and its consequences. Inflation makes the Universe featureless, except for tiny quantum fluctuations that cause the density of matter and energy in the Universe to vary with position. These initially small variations grow to become observable effects. One effect is the formation of the billions of galaxies that populate the night sky. Another is to leave a tiny imprint on the cosmic microwave background radiation (CMB), a faint hum of microwave radiation in which the Universe is bathed. The CMB is being studied in exquisite detail by the Planck satellite, which was launched in 2009. We are at the forefront of interpreting the Planck data in the hope of pinning down which of the various theories of the early universe are ruled out and which remain viable. The deficiencies of the Standard Model extend still further for it does not explain the amount nor even the existence of ordinary matter. Our scientists will use this to constrain possible physics beyond the Standard Model and to do that they need to master the dynamics of the Universe shortly after the end of inflation. Last but not least, we hope to understand better the mysterious "Dark Energy" that drives the current and future acceleration of the Universe: one possibility is that it is because Einstein's theory of gravity is not quite right and that is something we will explore.
Planned Impact
See the attached "Pathways to Impact" document for details.
This project has impact beyond the international scientific community mainly through the training of highly skilled graduate students and postdoctoral researchers and through extensive "outreach" activities of various kinds aimed at engaging directly with the general public, school children, teachers, policy makers and the media. Undergraduate teaching is also impacted beneficially by our research.
This project has impact beyond the international scientific community mainly through the training of highly skilled graduate students and postdoctoral researchers and through extensive "outreach" activities of various kinds aimed at engaging directly with the general public, school children, teachers, policy makers and the media. Undergraduate teaching is also impacted beneficially by our research.
Organisations
Publications
Holguin J
(2021)
Improvements on dipole shower colour
in The European Physical Journal C
Hoffmann J
(2021)
Squared quartic hilltop inflation
in Physical Review D
Hijazi M
(2020)
Goldstone boson effects on vacuum decay
in Nuclear Physics B
Hanson E
(2019)
Charged Higgs bosons in naturally aligned two-Higgs-doublet models at the LHC
in Physical Review D
Guzzi M.
(2017)
CTEQ-TEA parton distributions functions with intrinsic charm
in Proceedings of Science
Guzzi M
(2016)
Differential cross sections for top pair production at the LHC
in Nuclear and Particle Physics Proceedings
Guzzi M
(2018)
CTEQ-TEA parton distribution functions with intrinsic charm
Guzzi M
(2018)
CTEQ-TEA parton distribution functions with intrinsic charm
in EPJ Web of Conferences
Gryb S
(2021)
When scale is surplus
in Synthese
Forshaw J
(2020)
Building a consistent parton shower
in Journal of High Energy Physics
Forshaw J
(2021)
Coulomb gluons will generally destroy coherence
in Journal of High Energy Physics
Forshaw J
(2019)
Parton branching at amplitude level
in Journal of High Energy Physics
Forshaw J
(2021)
Ordering multiple soft gluon emissions using SCET with Glauber operators
in Physical Review D
Fischer N
(2015)
Measurement of observables sensitive to coherence effects in hadronic Z decays with the OPAL detector at LEP
in The European Physical Journal C
Finn K
(2018)
A Finite Measure for the Initial Conditions of Inflation
Finn K
(2020)
Frame covariance in quantum gravity
in Physical Review D
Finn K
(2021)
Quantizing the Eisenhart lift
in Physical Review D
Finn K
(2019)
Finite measure for the initial conditions of inflation
in Physical Review D
Finn K
(2020)
Frame Covariant Formalism for Fermionic Theories
Finn K
(2018)
Eisenhart lift for field theories
in Physical Review D
Finn K
(2019)
Frame Covariance in Quantum Gravity
Finn K
(2021)
Frame covariant formalism for fermionic theories
in The European Physical Journal C
Finn K
(2020)
Quantizing the Eisenhart Lift
FASER Collaboration
(2018)
FASER's Physics Reach for Long-Lived Particles
FASER Collaboration
(2018)
Technical Proposal for FASER: ForwArd Search ExpeRiment at the LHC
Faraggi A
(2015)
Extra $$Z^{\prime }$$ Z ' s and $$W^{\prime }$$ W ' s in heterotic-string derived models
in The European Physical Journal C
Edholm J
(2016)
Behavior of the Newtonian potential for ghost-free gravity and singularity free gravity
in Physical Review D
Dulat S
(2016)
New parton distribution functions from a global analysis of quantum chromodynamics
in Physical Review D
Dulat S
(2016)
The structure of the proton: The CT14 QCD global analysis
in EPJ Web of Conferences
Dulat S
(2016)
Impact of the HERA I+II combined data on the CT14 QCD global analysis
in EPJ Web of Conferences
Duch M
(2019)
Gauge-independent approach to resonant dark matter annihilation
in Journal of High Energy Physics
Donnachie A
(2015)
Corrigendum to "pp and p ¯ p total cross sections and elastic scattering" [Phys. Lett. B 727 (4-5) (2013) 500-505]
in Physics Letters B
Donnachie A
(2014)
Central soft production of hadrons in pp collisions
in International Journal of Modern Physics A
Dolan S
(2015)
Stability of black holes in Einstein-charged scalar field theory in a cavity
in Physical Review D
Dolan S
(2015)
Bound states of the Dirac equation on Kerr spacetime
in Classical and Quantum Gravity
Dolan S
(2016)
Stable photon orbits in stationary axisymmetric electrovacuum spacetimes
in Physical Review D
Dolan S
(2015)
Tidal invariants for compact binaries on quasicircular orbits
in Physical Review D
Dolan S
(2015)
Bound states of the Dirac equation on Kerr spacetime
Dolan S
(2019)
Electromagnetic fields on Kerr spacetime, Hertz potentials, and Lorenz gauge
in Physical Review D
Dolan S
(2014)
Gravitational self-torque and spin precession in compact binaries
in Physical Review D
Dolan S
(2017)
Rainbow scattering in the gravitational field of a compact object
in Physical Review D
Dolan S
(2018)
Instability of the Proca field on Kerr spacetime
in Physical Review D
Dolan S
(2017)
Spinning Black Holes May Grow Hair
in Physics
Dolan S
(2018)
Geometrical optics for scalar, electromagnetic and gravitational waves on curved spacetime
in International Journal of Modern Physics D
Djouadi A
(2017)
Enhanced rates for diphoton resonances in the MSSM
in Physics Letters B
Dimopoulos K
(2018)
Steep eternal inflation and the swampland
in Physical Review D
Description | Progress on many fronts towards a better understanding of the universe, by developing theoretical models constrained by data from the LHC and cosmology experiments such as Planck. |
Exploitation Route | By continued research. |
Sectors | Education |
Description | Researchers supported by this award have been very active in outreach activities for the general public, schools and scientists from other fields. |
First Year Of Impact | 2014 |
Sector | Education |
Impact Types | Cultural Societal |