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Quintessence and the Swampland: The Numerically Controlled Regime of Moduli Space
Fortschritte der Physik, Volume 70, Issue 4, April 2022., 2022 Abstract We provide a detailed discussion of the main theoretical and phenomenological challenges of quintessence model building in any numerically controlled regime of the moduli space of string theory. We argue that a working quintessence model requires a leading order non‐supersymmetric (near) Minkowski vacuum with an axionic flat direction.
Michele Cicoli +3 more
wiley +1 more source
Quintessence and the Swampland: The Parametrically Controlled Regime of Moduli Space
Fortschritte der Physik, Volume 70, Issue 4, April 2022., 2022 Abstract We provide evidence that slow roll is not possible in any parametrically controlled regime of the moduli space of string theory. This is proven in full generality in the asymptotic limit of the moduli space of type II and heterotic Calabi‐Yau compactifications for the dilaton and any number of Kähler moduli.
Michele Cicoli +3 more
wiley +1 more source
ASPECTS OF STRING PHENOMENOLOGY IN PARTICLE PHYSICS AND COSMOLOGY
Odessa Astronomical Publications, 2016 We discuss possible connections between several scales in particle physics and cosmology, such the the electroweak, inflation, dark energy and Planck scales.
I. Antoniadis
doaj +1 more source
Discovery and Exclusion Prospects for Staus Produced by Heavy Higgs Boson Decays at the LHC
Advances in High Energy Physics, Volume 2022, Issue 1, 2022., 2022 In a previous work, we developed a search strategy for staus produced by the decay of the heavy CP‐even Higgs boson H within the context of the large tanβ regime of the minimal supersymmetric standard model (MSSM) in a scenario of large stau mixing. Here, we study the performance of such search strategy by confronting it with the complementary mixing ...
Ernesto Arganda +4 more
wiley +1 more source
MSSM soft terms from supergravity with gauged R-symmetry in de Sitter vacuum
Nuclear Physics B, 2016 We work out the phenomenology of a model of supersymmetry breaking in the presence of a tiny (tunable) positive cosmological constant, proposed by the authors in arXiv:1403.1534. It utilizes a single chiral multiplet with a gauged shift symmetry that can
I. Antoniadis, R. Knoops
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Mass hierarchy from the flavor symmetry in supersymmetric multi-Higgs doublet model
Journal of High Energy Physics, 2020 We study the supersymmetric standard model with multiple Higgs doublets with gauged U(1) X flavor symmetry. When the flavor symmetry is broken by the vacuum expectation value of flavon, the ℤ3 symmetry M 3 called matter triality remains and it prohibits ...
Atsushi Hinata
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Extraction of neutrino Yukawa parameters from displaced vertices of sneutrinos
Journal of High Energy Physics, 2021 We study displaced signatures of sneutrino pairs potentially emerging at the Large Hadron Collider (LHC) in a Next-to-Minimal Supersymmetric Standard Model supplemented with right-handed neutrinos triggering a Type-I seesaw mechanism.
Amit Chakraborty +3 more
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Studying Same‐Sign Top Pair Production through Top‐Higgs FCNC Interactions at the HL‐LHC
Advances in High Energy Physics, Volume 2022, Issue 1, 2022., 2022 We investigate the potential of the HL‐LHC for discovering new physics effects via the same‐sign top pair signatures. We focus on the semileptonic (electron and muon) decay of the top quarks and study the reach for a simplified model approach where top quark flavor changing could occur through a neutral scalar exchange.
O. M. Ozsimsek +3 more
wiley +1 more source
Supersymmetry phenomenology [PDF]
AIP Conference Proceedings, 1998 8 pages, Latex2.09, uses aip2col.sty (included) and epsf.sty. 11 postscript figures. Talk present at FCP97, Workshop on Fundamental Particles and Interactions, Vanderbilt University, May 1997. Postscript file of complete paper also available at http://pheno.physics.wisc.edu/pub/preprints/1997/madph-97-1011.ps.Z or at ftp://pheno.physics.wisc.edu/pub ...
openaire +2 more sources
Dirac gauginos in low scale supersymmetry breaking
Nuclear Physics B, 2014 It has been claimed that Dirac gaugino masses are necessary for realistic models of low-scale supersymmetry breaking, and yet very little attention has been paid to the phenomenology of a light gravitino when gauginos have Dirac masses.
Mark D. Goodsell, Pantelis Tziveloglou
doaj +1 more source