Results 31 to 40 of about 147,304 (226)
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
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
A singular way to search for heavy resonances in missing energy events
Journal of High Energy Physics, 2020 The phase space of visible particles in missing energy events may have singularity structures. The singularity variables are devised to capture the singularities effectively for given event topology.
Chan Beom Park
doaj +1 more source
Calculated Event Rates for Axion Detection via Atomic and Nuclear Processes
Advances in High Energy Physics, Volume 2022, Issue 1, 2022., 2022 The possibility of detection of 5.5 MeV and 14.4 keV solar axions by observing axion‐induced nuclear and atomic transitions is investigated. The presence of nuclear transitions between spin orbit partners can be manifested by the subsequent deexcitation via gamma ray emissions.
John D. Vergados +3 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
doaj +1 more source
Singlino-dominated dark matter in general NMSSM
Journal of High Energy Physics, 2021 The general Next-to-Minimal Supersymmetric Standard Model (NMSSM) describes the singlino-dominated dark-matter (DM) property by four independent parameters: singlet-doublet Higgs coupling coefficient λ, Higgsino mass μ tot, DM mass m χ ˜ 1 0 $$ {m}_ ...
Junjie Cao +4 more
doaj +1 more source
Relaxing the W′ Constraint on Compact Extradimension
Advances in High Energy Physics, Volume 2022, Issue 1, 2022., 2022 In this paper, we study the constraint on brane tension and compactification scale for models with brane fluctuations using the results from the direct search of W′ at 13 TeV LHC, with an integrated luminosity of 36.1fb−1, in the case for which branon forms the entire cold dark matter.
Mathew Thomas Arun +1 more
wiley +1 more source
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
Tachyonic de Sitter Solutions of 10d Type II Supergravities
Fortschritte der Physik, Volume 69, Issue 7, July 2021., 2021 Abstract Cosmological models of the early or late universe exhibit (quasi) de Sitter space‐times with different stability properties. Considering models derived from string theory, the swampland program does not provide for now a definite characterisation of this stability.
David Andriot
wiley +1 more source
Electroweak signatures of gauge-mediated supersymmetry breaking in multiple hidden sectors
Journal of High Energy Physics, 2022 This paper discusses electroweak collider signatures of the NMSSM with multiple-sector gauge mediation. We focus on the production of neutralinos and charginos which cascade decay into standard model particles and lighter supersymmetric particles, with ...
Diogo Buarque Franzosi +3 more
doaj +1 more source