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Search Results: 1 - 10 of 33813 matches for " John Ellis "
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The Physics Prospects for CLIC
Ellis, John
High Energy Physics - Phenomenology , 2008,
Abstract: Following a brief outline of the CLIC project, this talk summarizes some of the principal motivations for an e+ e- collider with E_CM = 3 TeV. It is shown by several examples that CLIC would represent a significant step beyond the LHC and ILC in its capabilities for precision measurements at high energies. It would make possible a complete study of a light Higgs boson, including rare decay modes, and would provide a unique tool to study a heavy Higgs boson. CLIC could also complete the studies of supersymmetric spectra, if sparticles are relatively light, and discover any heavier sparticles. It would also enable deeper probes of extra dimensions, new gauge bosons and excited quarks or leptons. CLIC has unique value to add to experimental particle physics, whatever the LHC discovers.
Outlook from SUSY07
Ellis, John
High Energy Physics - Phenomenology , 2007,
Abstract: Make-or-break time is near for the Higgs boson and supersymmetry. The LHC will soon put to the sword many theoretical ideas, and define the future for collider physics.
Prospects for Discovering Supersymmetry at the LHC
Ellis, John
High Energy Physics - Phenomenology , 2008, DOI: 10.1140/epjc/s10052-008-0790-4
Abstract: Supersymmetry is one of the best-motivated candidates for physics beyond the Standard Model that might be discovered at the LHC. There are many reasons to expect that it may appear at the TeV scale, in particular because it provides a natural cold dark matter candidate. The apparent discrepancy between the experimental measurement of g_mu - 2 and the Standard model value calculated using low-energy e+ e- data favours relatively light sparticles accessible to the LHC. A global likelihood analysis including this, other electroweak precision observables and B-decay observables suggests that the LHC might be able to discover supersymmetry with 1/fb or less of integrated luminosity. The LHC should be able to discover supersymmetry via the classic missing-energy signature, or in alternative phenomenological scenarios. The prospects for discovering supersymmetry at the LHC look very good.
Polarization puts a New Spin on Physics
Ellis, John
High Energy Physics - Phenomenology , 2007, DOI: 10.1063/1.2750734
Abstract: Polarization and spin effects are useful for probing the Standard Model, in both the electroweak sector and the strong sector, where the spin decomposition of the nucleon is still a hot topic, with important new data on the net polarizations of the gluon and the strange quarks. Spin phenomena are also useful in searches for new physics, for example via measurements of the anomalous magnetic moment of the muon and searches for electric dipole moments. The cross sections for the direct detection of dark matter may also have an important spin-dependent component, related to the spin decomposition of the nucleon, that could be an important diagnostic tool. Polarization effects are also important diagnostic aids for high-energy experiments at electron-proton, proton-proton and electron-positron colliders.
Beyond the Standard Model at the LHC and Beyond
Ellis, John
High Energy Physics - Phenomenology , 2007, DOI: 10.1063/1.2823809
Abstract: Many of the open questions beyond the Standard Model will be addressed by the LHC, including the origin of mass, supersymmetry, dark matter and the possibility of large extra dimensions. A linear e+ e- collider (LC) with sufficient centre-of-mass energy would add considerable value to the capabilities of the LHC.
Gauguin's questions in particle physics: Where are we coming from? What are we? Where are we going?
Ellis, John
High Energy Physics - Phenomenology , 2007, DOI: 10.1088/1742-6596/110/1/012001
Abstract: Within particle physics itself, Gauguin's questions may be interpreted as: P1 - What is the status of the Standard Model? P2 - What physics may lie beyond the Standard Model? P3 - What is the `Theory of Everything'? Gauguin's questions may also asked within a cosmological context: C1 - What were the early stages of the Big Bang? C2 - What is the material content of the Universe today? C3 - What is the future of the Universe? In this talk I preview many of the topics to be discussed in the plenary sessions of this conference, highlighting how they bear on these fundamental questions.
Why Digitise Historical Television?
John Ellis
View : Journal of European Television History and Culture , 2012,
Abstract: Digitisation of historic TV material is driven by the widespread perception that archival material should be made available to diverse users. Yet digitisation alters the material, taking away any lingering sense of presence. Digitisation and online access, however, offer startling new possibilities. The article offers three: use of material in language teaching and learning; use in dementia therapy; and applications as data in medical research. All depend on ordinary TV for their effectivity.
Prospects for New Physics at the LHC
John Ellis
Physics , 2010, DOI: 10.1142/S0217751X10049347
Abstract: High-energy collisions at the LHC are now starting. The new physics agenda of the LHC is reviewed, with emphasis on the hunt for the Higgs boson (or whatever replaces it) and supersymmetry. In particular, the prospects for discovering new physics in the 2010-2011 run are discussed.
Aspects of M Theory and Phenomenology
John Ellis
Physics , 1998,
Abstract: A brief review is presented of selected topics, including a world-sheet formulation of M theory, couplings and scales in M phenomenology, the perils of baryon decay and the possible elevation of free-fermion models to true M- or F-theory compactifications.
Dark Matter and Dark Energy: Summary and Future Directions
John Ellis
Physics , 2003, DOI: 10.1098/rsta.2003.1297
Abstract: This paper reviews the progress reported at this Royal Society Discussion Meeting and advertizes some possible future directions in our drive to understand dark matter and dark energy. Additionally, a first attempt is made to place in context the exciting new results from the WMAP satellite, which were published shortly after this Meeting. In the first part of this review, pieces of observational evidence shown here that bear on the amounts of dark matter and dark energy are reviewed. Subsequently, particle candidates for dark matter are mentioned, and detection strategies are discussed. Finally, ideas are presented for calculating the amounts of dark matter and dark energy, and possibly relating them to laboratory data.
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