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Gunion J.F.,University of California at Davis | Jiang Y.,University of California at Davis | Kraml S.,CNRS Laboratory of Subatomic Physics & Cosmology
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Year: 2012

We assess the extent to which various constrained versions of the NMSSM are able to describe the recent hints of a Higgs signal at the LHC corresponding to a Higgs mass in the range 123-128 GeV. © 2012 Elsevier B.V.


Gunion J.F.,University of California at Davis | Jiang Y.,University of California at Davis | Kraml S.,CNRS Laboratory of Subatomic Physics & Cosmology
Physical Review Letters | Year: 2013

We develop diagnostic tools that would provide incontrovertible evidence for the presence of more than one Higgs boson near 125 GeV in the LHC data. © 2013 American Physical Society.


Ashtekar A.,Pennsylvania State University | Barrau A.,CNRS Laboratory of Subatomic Physics & Cosmology
Classical and Quantum Gravity | Year: 2015

The Planck collaboration has provided us rich information about the early Universe, and a host of new observational missions will soon shed further light on the 'anomalies' that appear to exist on the largest angular scales. From a quantum gravity perspective, it is natural to inquire if one can trace back the origin of such puzzling features to Planck scale physics. Loop quantum cosmology provides a promising avenue to explore this issue because of its natural resolution of the big bang singularity. Thanks to advances over the last decade, the theory has matured sufficiently to allow concrete calculations of the phenomenological consequences of its pre-inflationary dynamics. In this article we summarize the current status of the ensuing two-way dialog between quantum gravity and observations. © 2015 IOP Publishing Ltd.


Gunion J.F.,University of California at Davis | Jiang Y.,University of California at Davis | Kraml S.,CNRS Laboratory of Subatomic Physics & Cosmology
Physical Review D - Particles, Fields, Gravitation and Cosmology | Year: 2012

We examine next-to-minimal supersymmetric model scenarios with partial parameter unification at the grand unification scale in which both h 1 and h 2 lie in the 123-128 GeV mass range. Very substantially enhanced γγ and other rates are possible. Broadened mass peaks are natural. © 2012 American Physical Society.


Fichet S.,Federal University of Rio Grande do Norte | Fichet S.,CNRS Laboratory of Subatomic Physics & Cosmology
Physical Review D - Particles, Fields, Gravitation and Cosmology | Year: 2012

We present a formulation of naturalness made in the framework of Bayesian statistics, which unravels the conceptual problems related to previous approaches. Among other things, the relative interpretation of the measure of naturalness turns out to be unambiguously established by Jeffreys' scale. Also, the usual sensitivity formulation (the so-called Barbieri-Giudice measure) appears to be embedded in our formulation under an extended form. We derive the general sensitivity formula applicable to an arbitrary number of observables. Several consequences and developments are further discussed. As a final illustration, we work out the map of combined fine-tuning associated with the gauge hierarchy problem and neutralino dark matter in a classic supersymmetric model. © 2012 American Physical Society.

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