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Top Quark Pairs at High Invariant Mass - A Model-Independent Discriminator of New Physics at the LHC [PDF]

open access: green, 2006
We study top quark pair production to probe new physics at the LHC. We propose reconstruction methods for $t\bar{t}$ semileptonic events and use them to reconstruct the $t\bar{t}$ invariant mass. The angular distribution of top quarks in their c.m. frame
Barger, Vernon   +2 more
core   +4 more sources

Geometrical Invariants of Matter Motion in Physics

open access: green, 2005
This paper defines the spacetime geometry attached with observor as vacuum geometry (it defines the idea physical measurement geometry) and the spacetime geometry attached with matter as spacetime geometry. The initial spacetime geometry attached with matter is taken as refference geometry (named as initial co-moving coordinator system), and the ...
Xiao Jianuha
openaire   +4 more sources

Notes on topological insulators [PDF]

open access: yes, 2016
This paper is a survey of the $\mathbb{Z}_2$-valued invariant of topological insulators used in condensed matter physics. The $\mathbb{Z}$-valued topological invariant, which was originally called the TKNN invariant in physics, has now been fully ...
Kaufmann, Ralph M.   +2 more
core   +3 more sources

The Physics of spectral invariants [PDF]

open access: yes2010 2nd Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing, 2010
To make full use of the increased possibilities of imaging spectroscopy (compared with the traditional multispectral instruments) for remote sensing of vegetation canopies, physically-based models should be used. The problem of retrieving the large number of model parameters from remotely sensed reflectance data is an ill-posed and underdetermined one.
openaire   +3 more sources

Invariant representation of physical stability in the human brain [PDF]

open access: yeseLife, 2021
Successful engagement with the world requires the ability to predict what will happen next. Here, we investigate how the brain makes a fundamental prediction about the physical world: whether the situation in front of us is stable, and hence likely to stay the same, or unstable, and hence likely to change in the immediate future.
Michael A. Cohen   +4 more
openaire   +4 more sources

SYMMETRIES AND INVARIANCES IN CLASSICAL PHYSICS [PDF]

open access: yes, 2007
This Chapter discusses the role of symmetry in classical physics. We begin, in Section 2, with the distinction between symmetries of objects and of laws, and that between symmetry principles and symmetry arguments, including a discussion of Curie’s principle.
K. Brading, CASTELLANI, ELENA
openaire   +2 more sources

Predictions from Heavy New Physics Interpretation of the Top Forward-Backward Asymmetry [PDF]

open access: yes, 2012
We derive generic predictions at hadron colliders from the large forward-backward asymmetry observed at the Tevatron, assuming the latter arises from heavy new physics beyond the Standard Model.
A Martin   +31 more
core   +2 more sources

Lattice Gauge Tensor Networks [PDF]

open access: yes, 2014
We present a unified framework to describe lattice gauge theories by means of tensor networks: this framework is efficient as it exploits the high amount of local symmetry content native of these systems describing only the gauge invariant subspace ...
Calarco, Tommaso   +3 more
core   +2 more sources

Nonlinear QED and physical Lorentz invariance

open access: yesPhysical Review D, 2006
The spontaneous breakdown of 4-dimensional Lorentz invariance in the framework of QED with the nonlinear vector potential constraint A_ ^{2}=M^{2}(where M is a proposed scale of the Lorentz violation) is shown to manifest itself only as some noncovariant gauge choice in the otherwise gauge invariant (and Lorentz invariant) electromagnetic theory.
Azatov, A., Chkareuli, J.
openaire   +3 more sources

Unitarity Triangles and the Search for New Physics [PDF]

open access: yes, 2002
Assuming that the Kobayashi-Maskawa mechanism gives the dominant contribution to CP violation at low energies, we propose a novel way of testing the flavour sector of the Standard Model which has the potencial for discovering New Physics.
Abbiendi   +55 more
core   +2 more sources

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