Results 31 to 40 of about 8,251 (169)
, 2011 We explore an alternative mechanism for the production of gravitino dark matter whereby relic gravitinos originate from the decays of superpartners which are still in thermal equilibrium, i.e. via freeze-in.
Cheung, Clifford +2 more
core +2 more sources
Top-squark searches at the Tevatron in models of low-energy supersymmetry breaking [PDF]
, 2002 We study the production and decays of top squarks (stops) at the Tevatron collider in models of low-energy supersymmetry breaking. We consider the case where the lightest Standard Model (SM) superpartner is a light neutralino that predominantly decays ...
A. Brignole +95 more
core +2 more sources
The GUT Scale and Superpartner Masses from Anomaly Mediated Supersymmetry Breaking [PDF]
, 2000 We consider models of anomaly-mediated supersymmetry breaking (AMSB) in which the grand unification (GUT) scale is determined by the vacuum expectation value of a chiral superfield.
A. Pomarol +26 more
core +3 more sources
UV Shadows in EFTs: Accidental Symmetries, Robustness and No‐Scale Supergravity
Fortschritte der Physik, Volume 68, Issue 10, October 2020., 2020 Abstract We argue that accidental approximate scaling symmetries are robust predictions of weakly coupled string vacua, and show that their interplay with supersymmetry and other (generalised) internal symmetries underlies the ubiquitous appearance of no‐scale supergravities in low‐energy 4D EFTs.
C. P. Burgess +4 more
wiley +1 more source
Comments on nonlinear sigma models coupled to supergravity
Physics Letters B, 2017 N=1, D=4 nonlinear sigma models, parametrized by chiral superfields, usually describe Kählerian geometries, provided that Einstein frame supergravity is used.
Sergio Ferrara, Massimo Porrati
doaj +1 more source
Higgs and Z-boson Signatures of Supersymmetry [PDF]
, 1999 In supersymmetric theories of nature the Higgsino fermionic superpartner of the Higgs boson can arise as the lightest standard model superpartner depending on the couplings between the Higgs and supersymmetry breaking sectors.
Matchev, Konstantin T., Thomas, Scott
core +2 more sources
Massive Spinning Relativistic Particle: Revisited under BRST and Supervariable Approaches
Advances in High Energy Physics, Volume 2020, Issue 1, 2020., 2020 We discuss the continuous and infinitesimal gauge, supergauge, reparameterization, nilpotent Becchi‐Rouet‐Stora‐Tyutin (BRST), and anti‐BRST symmetries and derive corresponding nilpotent charges for the one (0 + 1)‐dimensional (1D) massive model of a spinning relativistic particle.
A. Tripathi +4 more
wiley +1 more source
Massive vector multiplet with Dirac-Born-Infeld and new Fayet-Iliopoulos terms in supergravity
Journal of High Energy Physics, 2018 We propose a four-dimensional N = 1 supergravity-based Starobinsky-type inflationary model in terms of a single massive vector multiplet, whose action includes the Dirac-Born-Infeld-type kinetic terms and a generalized (new) Fayet-Iliopoulos-type term ...
Hiroyuki Abe +3 more
doaj +1 more source
The scale of superpartner masses and electroweakino searches at the high-luminosity LHC
Journal of High Energy Physics, 2020 Searches for weakly interacting particles is one of the main goals of the high luminosity LHC run. In this work we study the well motivated cases of electroweakinos with mostly Wino and Bino components.
Jia Liu +3 more
doaj +1 more source
$$\alpha $$ α -attractors from supersymmetry breaking
European Physical Journal C: Particles and Fields, 2021 We construct new models of inflation and spontaneous supersymmetry breaking in de Sitter vacuum, with a single chiral superfield, where inflaton is the superpartner of the goldstino.
Yermek Aldabergenov +2 more
doaj +1 more source