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We compute the expected value of the cosmological constant in our universe from the Causal Entropic Principle. Since observers must obey the laws of ther-modynamics and causality, it asserts that physical parameters are most likely to be found in the range of values for which the total entropy production within a causally connected region is maximized.(More)
We investigate the reconstruction of high p T hadronically-decaying top quarks at the Large Hadron Collider. One of the main challenges in identifying energetic top quarks is that the decay products become increasingly collimated. This reduces the efficacy of conventional reconstruction methods that exploit the topology of the top quark decay chain. We(More)
The Randall-Sundrum (RS) framework has a built in protection against flavour violation, but still generically suffers from little CP problems. The most stringent bound on flavour violation is due to K , which is inversely proportional to the fundamental Yukawa scale. Hence the RS K problem can be ameliorated by effectively increasing the Yukawa scale with a(More)
We construct a simple theory in which the fine-tuning of the standard model is significantly reduced. Radiative corrections to the quadratic part of the scalar potential are constrained to be symmetric under a global U (4) × U (4) ′ symmetry due to a discrete Z 2 " twin " parity, while the quartic part does not possess this symmetry. As a consequence, when(More)
The flood lamination has for principal objective to maintain a downstream flow at a fixed lamination level. For this goal, it is necessary to proceed to the dimensioning of the river system capacity and to make sure of its management by taking into account socio-economic and environmental constraints. The use of flood diversion areas on a river has for main(More)
We present a class of warped extra dimensional models whose flavor violating interactions are much suppressed compared to the usual anarchic case due to flavor alignment. Such suppression can be achieved in models where part of the global flavor symmetry is gauged in the bulk and broken in a controlled manner. We show that the bulk masses can be aligned(More)
The defining feature of scalar sequestering is that the MSSM squark and slepton masses as well as all entries of the scalar Higgs mass matrix vanish at some high scale. This ultraviolet boundary condition-scalar masses vanish while gaugino and Higgsino masses are unsuppressed-is independent of the supersymmetry breaking mediation mechanism. It is the result(More)