131 citations · 717 across the 34 of their papers we have counts for
17 papers · 1 filter
Baryon number violation in supersymmetry: Neutron-antineutron oscillations as a probe beyond the LHC
Lorenzo Calibbi, Gabriele Ferretti, David Milstead +2
We summarize the current status of baryon number violation in supersymmetry and provide prospects for going beyond the present reach by means of a new search for neutron-antineutro…
The 750 GeV diphoton excess from the goldstino superpartner
Christoffer Petersson, Riccardo Torre
We interpret the di-photon excess recently reported by the ATLAS and CMS collaborations as a new resonance arising from the sgoldstino scalar, which is the superpartner of the Gold…
ATLAS diboson excess from low scale supersymmetry breaking
Christoffer Petersson, Riccardo Torre
We provide an interpretation of the recent ATLAS diboson excess in terms of a class of supersymmetric models in which the scale of supersymmetry (SUSY) breaking is in the few TeV r…
Light stop squarks and b-tagging
Gabriele Ferretti, Roberto Franceschini, Christoffer Petersson +1
A significant part of the parameter space for light stop squarks still remains unconstrained by collider searches. For both R-Parity Conserving (RPC) and R-Parity Violating (RPV) s…
Spot the stop with a b-tag
Gabriele Ferretti, Roberto Franceschini, Christoffer Petersson +1
The LHC searches for light compressed stop squarks have resulted in considerable bounds in the case where the stop decays to a neutralino and a charm quark. However, in the case wh…
Disappearing charged tracks in association with displaced leptons from supersymmetry
Christoffer Petersson
In this note we discuss a characteristic collider signature of models of gauge mediated supersymmetry breaking in which the selectron and smuon are mass-degenerate co-NLSP. In thes…
Selectron NLSP in Gauge Mediation
Lorenzo Calibbi, Alberto Mariotti, Christoffer Petersson +1
We discuss gauge mediation models in which the smuon and the selectron are mass-degenerate co-NLSP, which we, for brevity, refer to as selectron NLSP. In these models, the stau, as…
Multilepton and multiphoton signatures of supersymmetry at the LHC
Christoffer Petersson
Motivated by the absence of any clear signal of physics beyond the Standard Model at the LHC after Run I, we discuss one possible slight hint of new physics and one non-minimal ext…
Multiphoton signatures of goldstini at the LHC
Gabriele Ferretti, Alberto Mariotti, Kentarou Mawatari +1
We study models of gauge mediated SUSY breaking with more than one hidden sector. In these models the neutralino sector of the MSSM is supplemented with additional light neutral fe…
Multilepton signals of gauge mediated supersymmetry breaking at the LHC
Jorgen D'Hondt, Karen De Causmaecker, Benjamin Fuks +4
We investigate multilepton LHC signals arising from electroweak processes involving sleptons. We consider the framework of general gauge mediated supersymmetry breaking, focusing o…
Collider signatures of low scale supersymmetry breaking: A Snowmass 2013 White Paper
Emilian Dudas, Christoffer Petersson, Riccardo Torre
We consider the possibility that supersymmetry is broken at a low scale, within one order of magnitude above the TeV scale. In such a case, the degrees of freedom associated with t…
Higgs diphoton rate enhancement from supersymmetric physics beyond the MSSM
Marcus Berg, Igor Buchberger, D. M. Ghilencea +1
We show that supersymmetric "new physics" beyond the MSSM can naturally accommodate a Higgs mass near 126 GeV and enhance the signal rate in the Higgs to diphoton channel, while th…
Low Scale Supersymmetry Breaking and its LHC Signatures
Emilian Dudas, Christoffer Petersson, Pantelis Tziveloglou
We study the most general extension of the MSSM Lagrangian that includes scenarios in which supersymmetry is spontaneously broken at a low scale f. The spurion that parametrizes su…
Liberating Higgs couplings in supersymmetry
Christoffer Petersson, Alberto Romagnoni, Riccardo Torre
In the MSSM, the Higgs couplings to down-type quarks and leptons, normalized with respect to their corresponding Standard Model values, coincide at tree-level and this degeneracy i…
Photophilic Higgs from sgoldstino mixing
Brando Bellazzini, Christoffer Petersson, Riccardo Torre
The spontaneous breaking of linearly realized N=1 supersymmetry implies the existence of a pseudo-Goldstone fermion, the goldstino, and of its complex scalar superpartner, the sgol…
Higgs decay with monophoton + MET signature from low scale supersymmetry breaking
Christoffer Petersson, Alberto Romagnoni, Riccardo Torre
We study the decay of a standard model-like Higgs boson into a gravitino and a neutralino, which subsequently decays promptly into another gravitino and a photon. Such a decay can…
The MSSM Higgs Sector with a Dynamical Goldstino Supermultiplet
Christoffer Petersson, Alberto Romagnoni
We consider a supersymmetric realization of the MSSM Higgs sector, where the soft terms are promoted to supersymmetric operators and a minimal weakly coupled hidden sector is inclu…