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- Status of the SNO+ ExperimentPublication . Prior, GersendeThe SNO+ experiment has multiple physics goals among which t he search for neutrinoless double-beta decay, the study of solar neutrinos, measureme nts of anti-neutrinos from nuclear reactors and the Earth’s natural radioactivity, as well as t he ability to detect supernova neutrinos. Located in the SNOLAB underground physics laboratory (Cana da) it will re-use the SNO detec- tor equipped with ∼ 9300 PMTs and looking at a 12 m diameter spherical volume. The detector will be filled with 780 tonnes of liquid scintillator to which nat Te at 0.3% loading will be added. The commissioning of the detector at SNOLAB has started, and data with air and partial water fill have been taken. A short phase with the detector complete ly filled with water is expected to start at the end of the year, before running the detector wi th scintillator in 2016. The main detector developments and technical challenges inherent t o this large volume liquid scintillator and low-energy experiment are presented. In addition, the s tatus of the detector which is in its commissioning phase and the detector and physics plans for t he water phase will be described. Fi- nally, the neutrinoless double-beta decay sensitivity and physics goals that SNO+ aims to achieve in phases with different loadings will be given
- Search for massive, long-lived particles using multitrack displaced vertices or displaced lepton pairs in pp collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detectorPublication . ATLAS collaboration (2825 authors); Aguilar-Saavedra, Juan Antonio; Amor Dos Santos, Susana Patricia; Anjos, Nuno; Araque, Juan Pedro; Cantrill, Robert; Carvalho, João; Castro, Nuno Filipe; Conde Muiño, Patricia; Da Cunha Sargedas De Sousa, Mario Jose; Fiolhais, Miguel; Galhardo, Bruno; Gomes, Agostinho; Gonçalo, Ricardo; Jorge, Pedro; Lopes, Lourenco; Machado Miguens, Joana; Maio, Amélia; Maneira, José; Onofre, António; Palma, Alberto; Pedro, Rute; Pina, João Antonio; Pinto, Belmiro; Santos, Helena; Saraiva, João; Silva, José; Tavares Delgado, Ademar; Veloso, Filipe; Wolters, HelmutMany extensions of the Standard Model posit the existence of heavy particles with long lifetimes. This article presents the results of a search for events containing at least one long-lived particle that decays at a significant distance from its production point into two leptons or into five or more charged particles. This analysis uses a data sample of proton-proton collisions at s=8 TeV corresponding to an integrated luminosity of 20.3 fb-1 collected in 2012 by the ATLAS detector operating at the Large Hadron Collider. No events are observed in any of the signal regions, and limits are set on model parameters within supersymmetric scenarios involving R-parity violation, split supersymmetry, and gauge mediation. In some of the search channels, the trigger and search strategy are based only on the decay products of individual long-lived particles, irrespective of the rest of the event. In these cases, the provided limits can easily be reinterpreted in different scenarios.