Search for doubly charged scalar bosons decaying into same-sign W boson pairs with the ATLAS detector

0521087 - FZÚ 2020 RIV DE eng J - Journal Article
Aaboud, M. - Aad, G. - Abbott, B. - Chudoba, Jiří - Hejbal, Jiří - Hladík, Ondřej - Jačka, Petr - Jakoubek, Tomáš - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … Total 2918 authors
Search for doubly charged scalar bosons decaying into same-sign W boson pairs with the ATLAS detector.
European Physical Journal C. Roč. 79, č. 1 (2019), s. 1-30, č. článku 58. ISSN 1434-6044. E-ISSN 1434-6052
Research Infrastructure: CERN-CZ - 90058
Institutional support: RVO:68378271
Keywords : ATLAS * CERN LHC Coll * experimental results * 13000 GeV-cms * electroweak interaction * gauge boson * same sign * benchmark * signature
OECD category: Particles and field physics
Impact factor: 4.389, year: 2019
Method of publishing: Open access

A search for doubly charged scalar bosons decaying into W boson pairs is presented. It uses a data sample from proton–proton collisions corresponding to an integrated luminosity of 36.1 fb−1 collected by the ATLAS detector at the LHC at a centre-of-mass energy of 13 TeV in 2015 and 2016. This search is guided by a model that includes an extension of the Higgs sector through a scalar triplet, leading to a rich phenomenology that includes doubly charged scalar bosons H±± . Those bosons are produced in pairs in proton–proton collisions and decay predominantly into electroweak gauge bosons H±±→W±W± . Experimental signatures with several leptons, missing transverse energy and jets are explored. No significant deviations from the Standard Model predictions are found. The parameter space of the benchmark model is excluded at 95% confidence level for H±± bosons with masses between 200 and 220 GeV.
Permanent Link: http://hdl.handle.net/11104/0305753