UV constraints on massive spinning particles: lessons from the gravitino
Sign Up to like & getrecommendations! Published in 2020 at "Journal of High Energy Physics"
DOI: 10.1007/jhep02(2020)185
Abstract: Self-interacting massive particles with spin ≥ 1 unavoidably violate unitarity; the question is at what scale. For spin-1 the strong coupling scale (at which perturbative unitarity is lost) cannot be raised by any finite tuning… read more here.
Keywords: constraints massive; strong coupling; spin; massive spinning ... See more keywords
Search for a compressed supersymmetric spectrum with a light gravitino
Sign Up to like & getrecommendations! Published in 2017 at "Journal of High Energy Physics"
DOI: 10.1007/jhep09(2017)026
Abstract: A bstractPresence of the light gravitino as dark matter candidate in a supersymmetric (SUSY) model opens up interesting collider signatures consisting of one or more hard photons together with multiple jets and missing transverse energy… read more here.
Keywords: compressed supersymmetric; gravitino; search compressed; supersymmetric spectrum ... See more keywords
Gravitino vs. neutralino LSP at the LHC
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep09(2019)082
Abstract: Abstract Using the latest LHC data, we analyse and compare the lower limits on the masses of gluinos and the lightest stop in two natural supersymmetric motivated scenarios: one with a neutralino being the lightest… read more here.
Keywords: gev; lsp; neutralino lsp; lhc ... See more keywords
Prepotentials for linearized supergravity
Sign Up to like & getrecommendations! Published in 2019 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/aafd40
Abstract: Linearized supergravity in arbitrary dimension is reformulated into a first order formalism which treats the graviton and its dual on the same footing at the level of the action. This generalizes previous work by other… read more here.
Keywords: dimension; gravitino; prepotentials linearized; linearized supergravity ... See more keywords
MeV-GeV γ-ray telescopes probing axino LSP/gravitino NLSP as dark matter in the μνSSM
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2020/01/058
Abstract: Axino and gravitino are promising candidates to solve the dark matter (DM) problem in the framework of supersymmetry. In this work, we assume that the axino is the lightest supersymmetric particle (LSP), and therefore contributes… read more here.
Keywords: gravitino; dark matter; lsp gravitino; axino lsp ... See more keywords
Enhancement of the dark matter abundance before reheating: Applications to gravitino dark matter
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review D"
DOI: 10.1103/physrevd.96.103510
Abstract: In the first stages of inflationary reheating, the temperature of the radiation produced by inflaton decays is typically higher than the commonly defined reheating temperature ${T}_{RH}\ensuremath{\sim}({\mathrm{\ensuremath{\Gamma}}}_{\ensuremath{\phi}}{M}_{P}{)}^{1/2}$ where ${\mathrm{\ensuremath{\Gamma}}}_{\ensuremath{\phi}}$ is the inflaton decay rate. We consider… read more here.
Keywords: production; ensuremath; dark matter; gravitino ... See more keywords
Gravitino decay in high scale supersymmetry with R-parity violation
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review D"
DOI: 10.1103/physrevd.98.015030
Abstract: We consider the effects of R-parity violation due to the inclusion of a bilinear $\mu^\prime L H_u$ superpotential term in high scale supersymmetric models with an EeV scale gravitino as dark matter. Although the typical… read more here.
Keywords: high scale; violation; gravitino; parity violation ... See more keywords