Blar i Bergen Open Research Archive på forfatter "Bomark, Nils-Erik"
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Cosmic Ray Signatures from Decaying Gravitino Dark Matter
Bomark, Nils-Erik; Lola, Smaragda; Osland, Per; Raklev, Are R. (Journal article; Peer reviewed, 2010)We study the charged cosmic rays arising from the slow decay of gravitino dark matter within supersymmetric scenarios with trilinear R-parity violation. It is shown that operators of the LLE type can very well account for ... -
Flavour structure of R-violating neutralino decays at the LHC
Bomark, Nils-Erik; Choudhury, Debajyoti; Lola, Smaragda; Osland, Per (Peer reviewed; Journal article, 2011-07-15)We study signatures of R-parity violation in the production of supersymmetric particles at the LHC, and the subsequent decay of the lightest neutralino being the end product of a supersymmetric cascade decay. In doing so, ... -
Gravitino dark matter and the flavour structure of R-violating operators
Bomark, Nils-Erik; Lola, Smaragda; Osland, Per; Raklev, Are Reinert (Peer reviewed; Journal article, 2009-06-15)We study gravitino dark matter and slow gravitino decays within the framework of R-violating supersymmetry, with particular emphasis on the flavour dependence of the branching ratios and the allowed R-violating couplings. ... -
Long lived charginos in Natural SUSY?
Bomark, Nils-Erik; Kvellestad, Anders; Lola, Smaragda; Osland, Per; Raklev, Are (Peer reviewed; Journal article, 2014-05-05)Supersymmetric models with a small chargino-neutralino mass difference, and as a result metastable charginos, have been a popular topic of investigation in collider phenomenology. The possibility of a chargino lighter than ... -
Photon, neutrino and charged particle spectra from R-violating gravitino decays
Bomark, Nils-Erik; Lola, Smaragda; Osland, Per; Raklev, Are Reinert (Peer reviewed; Journal article, 2010-03-22)We study photonic, neutrino and charged particle signatures from slow decays of gravitino dark matter in supersymmetric theories where R-parity is explicitly broken by trilinear operators. Photons and (anti-)fermions from ... -
R-parity violating chargino decays at the LHC
Bomark, Nils-Erik; Kvellestad, Anders; Lola, Smaragda; Osland, Per; Raklev, Are (Peer reviewed; Journal article, 2014-12)Supersymmetric models with R-parity violation (RPV) have become more popular following the lack of any excess of missing energy events at the 8 TeV LHC. To identify such models, the suggested searches generally rely on the ... -
Supersymmetry with Trilinear R-Parity Violation – Implications for Cosmology and the LHC
Bomark, Nils-Erik (Doctoral thesis, 2011-12-16)The current Standard Model of particle physics is sometimes referred to as one of the most successful theories ever constructed. When looking at the precision with which its predictions are being confirmed, it is easy to ...