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Searches for heavy diboson resonances in pp collisions at √s = 13 TeV with the ATLAS detector

CollaborationWith : Ancu, Lucian Stefan / Bilbao De Mendizabal, Javier / Calace, Noemi / Chatterjee, Avishek / Clark, Allan Geoffrey / Coccaro, Andrea / Delitzsch, Chris Malena / Della Volpe, Domenico / Ferrere, Didier / Gadomski, Szymon / Golling, Tobias / Gonzalez Sevilla, Sergio / Gramling, Johanna Léna / Guescini, Francesco / Iacobucci, Giuseppe / Katre, Akshay / Khoo, Teng Jian / Lanfermann, Marie Christine / Lionti, Anthony Eric / March Ruiz, Luis / Mermod, Philippe / Nackenhorst, Olaf / Nessi, Marzio / Paolozzi, Lorenzo / Ristic, Branislav / Schramm, Steven / Sfyrla, Anna / Wu, Xin
Published in Journal of High Energy Physics. 2016, vol. 1609, p. 173-219
Collection SCOAP3
Abstract Searches for new heavy resonances decaying to WW , WZ , and ZZ bosons are presented, using a data sample corresponding to 3.2 fb −1 of pp collisions at √s = 13 TeV collected with the ATLAS detector at the CERN Large Hadron Collider. Analyses selecting ννqq , ℓνqq , ℓℓqq and qqqq final states are combined, searching for an arrow-width resonance with mass between 500 and 3000 GeV. The discriminating variable is either an invariant mass or a transverse mass. No significant deviations from the Standard Model predictions are observed. Three benchmark models are tested: a model predicting the existence of a new heavy scalar singlet, a simplified model predicting a heavy vector-boson triplet, and a bulk Randall-Sundrum model with a heavy spin-2 graviton. Cross-section limits are set at the 95% confidence level and are compared to theoretical cross-section predictions for a variety of models. The data exclude a scalar singlet with mass below 2650 GeV, a heavy vector-boson triplet with mass below 2600 GeV, and a graviton with mass below 1100 GeV. These results significantly extend the previous limits set using pp collisions at √s = 8 TeV.
Keywords Hadron-Hadron scattering (experiments)
arXiv: 1606.04833
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ATLAS COLLABORATION. Searches for heavy diboson resonances in pp collisions at √s = 13 TeV with the ATLAS detector. In: Journal of High Energy Physics, 2016, vol. 1609, p. 173-219. https://archive-ouverte.unige.ch/unige:88712

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Deposited on : 2016-11-04

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