Two exotic elements have been introduced into the standard cosmological model: non-baryonic dark matter and dark energy. The success in converting a hypothesis...
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PublicationProblems with the dark matter and dark energy hypotheses, and alternative ideas
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PublicationReconstructing the mass accretion histories of nearby red nuggets with their globular cluster systems
It is generally recognized that massive galaxies form through a combination of in-situ collapse and ex-situ accretion. The in-situ component forms early, where...
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NewsSAMUEL TING: “If we find complete agreement with the theory, we don’t learn anything”
“I still remember the surface of the Moon seen from the Teide Observatory”. He will never forget the image: Sharp, close up, and brilliant. It was the first...
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PublicationSatellites around Massive Galaxies Since z ~ 2: Confronting the Millennium Simulation with Observations
Minor merging has been postulated as the most likely evolutionary path to produce the increase in size and mass observed in the massive galaxies since z ~ 2. In...
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PublicationSearch for associated production of dark matter with a Higgs boson decaying to b\overline{b} or γγ at √{s}=13 TeV
A search for dark matter is performed looking for events with large missing transverse momentum and a Higgs boson decaying either to a pair of bottom quarks or...
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PublicationSearch for dark matter in events with energetic, hadronically decaying top quarks and missing transverse momentum at √{s}=13 TeV
A search for dark matter is conducted in events with large missing transverse momentum and a hadronically decaying, Lorentz-boosted top quark. This study is...
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PublicationSearch for dark matter produced with an energetic jet or a hadronically decaying W or Z boson at √{s}=13 TeV
A search for dark matter particles is performed using events with large missing transverse momentum, at least one energetic jet, and no leptons, in proton...
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PublicationSearch for low mass vector resonances decaying into quark-antiquark pairs in proton-proton collisions at √{s}=13 TeV
A search for narrow vector resonances decaying into quark-antiquark pairs is presented. The analysis is based on data collected in proton-proton collisions at √...
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PublicationSearch for natural and split supersymmetry in proton-proton collisions at √{s}=13 TeV in final states with jets and missing transverse momentum
A search for supersymmetry (SUSY) is performed in final states comprising one or more jets and missing transverse momentum using data from proton-proton...