58,280 research outputs found
Dark Energy and Cosmology
Understanding the space of possible theoretical explanations for the observed
cosmic acceleration is a central challenge of modern cosmology. This brief
document sketches selected aspects of approaches to this problem, focusing on
the possibility that a modification to General Relativity is responsible for
acceleration, as presented as a plenary talk at the ICHEP 2012 conference.Comment: 11 pages, invited plenary presentation delivered at the ICHEP 2012
conference. arXiv admin note: text overlap with arXiv:1105.0721,
arXiv:1011.0861, arXiv:astro-ph/060751
Random manifolds and quantum gravity
The non-perturbative, lattice field theory approach towards the quantization
of Euclidean gravity is reviewed. Included is a tentative summary of the most
significant results and a presentation of the current state of art.Comment: invited plenary talk at LATTICE '99 (Pisa), latex 5p
Phenomenology from lattice QCD
After a short presentation of lattice QCD and some of its current practical
limitations, I review recent progress in applications to phenomenology.
Emphasis is placed on heavy-quark masses and on hadronic weak matrix elements
relevant for constraining the CKM unitarity triangle. The main numerical
results are highlighted in boxes.Comment: 18 pages, 14 postscript figures. Plenary talk at ICHEP 2002, 24-31
July 2002, Amsterdam, The Netherland
Future neutrino oscillation facilities: physics priorities and open issues
The recent discovery that neutrinos have mass opens a wide new field of
experimentation. Accelerator-made neutrinos are essential. Ideas for future
facilities include superbeams beta-beams and neutrino factories, each
associated with one or several options for detector systems. A summary of the
perceived virtues and shortcomings of these options, and a number of open
questions, are presented.Comment: based on an Invited plenary presentation at NUFACT05, Frascati, June
200
Theoretical review of diffractive phenomena
We review QCD based descriptions of diffractive deep inelastic scattering
emphasising the role of models with parton saturation. These models provide
natural explanation of such experimentally observed facts as the constant ratio
of the diffractive and total cross sections as a function of the Bjorken
variable, and Regge factorization of diffractive parton distributions. The
Ingelman-Schlein model and the soft color interaction model are also presented.Comment: plenary presentation at the Baryon04, 25-29 October 2004, Palaiseau,
Franc
A giant step forward: Notes from the Aboriginal Talking Circle
The text was adapted from the closing plenary presentation by John B. Zoe, who shared a perspective on key messages from the Aboriginal Talking Circles
The Little Review on Leptogenesis
This is a brief review on the scenario of baryogenesis through leptogenesis.
Leptogenesis is an appealing scenario that may relate the observed baryon
asymmetry in the Universe to the low-energy neutrino data. In this review talk,
particular emphasis is put on recent developments on the field, such as the
flavourdynamics of leptogenesis and resonant leptogenesis near the electroweak
phase transition. It is illustrated how these recent developments enable the
modelling of phenomenologically predictive scenarios that can directly be
tested at the LHC and indirectly in low-energy experiments of lepton-number and
lepton-flavour violation.Comment: 15 pages, based on a plenary presentation given at the DISCRETE'08
Symposium, 11-16 December 2008, Valencia, Spai
Tests of the Electroweak Sector of the Standard Model
The Electroweak sector of the Standard Model is reviewed and best fits are
presented for its free parameters based on currently available experimental
tests. The Standard Model remains an excellent descriptions of the available
experimental data. The preferred mass range of the still elusive Higgs boson in
the Standard Model is GeV at the 95% Confidence Level.
A Standard Model Higgs in this mass range is likely to be observed in the years
2007--2010, either at the Tevatron or at the LHC.Comment: 20 pages, 38 figures, Plenary presentation at the HEP2005
International Europhysics Conference on High Energy Physics, EPS (July
21st-27th, 2005) in Lisboa, Portuga
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