Results 51 to 60 of about 211,321 (207)
CP violating mode of the stoponium decay into Zh
Journal of High Energy Physics, 2018 We show that a novel decay mode Zh of the bound state of stop-anti-stop pair in the ground state 1S0t˜1t˜1* $$ {}^1{S}_0\left({\tilde{t}}_1{\tilde{t}}_1^{*}\right) $$ may have a significant branching ratio if the CP violating mixing appears in the stop ...
Kingman Cheung +2 more
doaj +1 more source
Resummation of terms enhanced by trilinear squark-Higgs couplings in the MSSM
Journal of High Energy Physics, 2021 We analyze the appearance of the trilinear squark-Higgs couplings x q in Green functions in the Higgs sector of the MSSM and in threshold corrections to the SM. The results are constraints on maximal powers of x q in QCD-related loop corrections.
Thomas Kwasnitza, Dominik Stöckinger
doaj +1 more source
Species Scale and Primordial Gravitational Waves
Fortschritte der Physik, Volume 72, Issue 6, June 2024.Abstract The species scale is a field‐dependent UV cut‐off for any effective field theory weakly coupled to gravity. In this letter, it is shown that in the context of inflationary cosmology, a detection of primordial gravitational waves will set an upper bound on the decay rate |Λs′/Λs|$|\Lambda ^{\prime }_s/\Lambda _s|$ of the species scale ...
Marco Scalisi
wiley +1 more source
Precise prediction of the MSSM Higgs boson masses for low M A
Journal of High Energy Physics, 2018 Precise predictions for Higgs boson masses in the Minimal Supersymmetric Standard Model can be obtained by combining fixed-order calculations with effective field theory (EFT) methods for the resummation of large logarithms in case of heavy super ...
Henning Bahl, Wolfgang Hollik
doaj +1 more source
New Models of Gauge and Gravity Mediated Supersymmetry Breaking [PDF]
Phys.Rev.D55:5508-5519,1997, 1996 We show that supersymmetry breaking in a class of theories with SU(N) x SU(N-2) gauge symmetry can be studied in a calculable sigma model. We use the sigma model to show that the supersymmetry breaking vacuum in these theories leaves a large subgroup of flavor symmetries intact, and to calculate the masses of the low-lying states.
arxiv +1 more source
Asymptotically‐Flat Black Hole Solutions in Symmergent Gravity
Fortschritte der Physik, Volume 72, Issue 4, April 2024.Abstract Symmergent gravity is an emergent gravity model with an R+R2$R+R^2$ curvature sector and an extended particle sector having new particles beyond the known ones. With constant scalar curvature, asymptotically flat black hole solutions are known to have no sensitivity to the quadratic curvature term (coefficient of R2$R^2$). With variable scalar
Beyhan Puliçe +3 more
wiley +1 more source
Detection prospects of light pseudoscalar Higgs boson at the LHC
Journal of High Energy Physics, 2017 The discovery potential of light pseudo scalar Higgs boson for the mass range 10-60 GeV is explored. In the context of the next-to-minimal supersymmetric standard (NMSSM) model, the branching fraction of light pseudo scalar Higgs boson decaying to a pair
Monoranjan Guchait +2 more
doaj +1 more source
The scale of supersymmetry breaking as a free parameter [PDF]
Nucl.Phys.Proc.Suppl.101:357-365,2001, 2001 While supersymmetric extensions of the Standard Model can be fully described in terms of explicitly broken global supersymmetry, this description is only effective. Once related to spontaneous breaking in a more fundamental theory, the effective parameters translate to functions of two distinct scales, the scale of spontaneous supersymmetry breaking ...
arxiv +1 more source
Fortschritte der Physik, Volume 72, Issue 2, February 2024.Abstract The string theory landscape may include a multitude of ultraviolet embeddings of the Standard Model, but identifying these has proven difficult due to the enormous number of available string compactifications. Genetic Algorithms (GAs) represent a powerful class of discrete optimisation techniques that can efficiently deal with the immensity of
Steve A. Abel +4 more
wiley +1 more source
Probing minimal SUSY scenarios in the light of muon g−2 and dark matter
Journal of High Energy Physics, 2017 We study supersymmetric (SUSY) models in which the muon g −2 discrepancy and the dark matter relic abundance are simultaneously explained. The muon g − 2 discrepancy, or a 3σ deviation between the experimental and theoretical results of the muon ...
Motoi Endo +3 more
doaj +1 more source