Search for the direct production of charginos and neutralinos in final states with tau leptons in √s =13 TeV pp collisions with the ATLAS detector

0499981 - FZÚ 2019 RIV DE eng J - Journal Article
Aaboud, M. - Aad, G. - Abbott, B. - Chudoba, Jiří - Hejbal, Jiří - Hladík, Ondřej - Jakoubek, Tomáš - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal … Total 2882 authors
Search for the direct production of charginos and neutralinos in final states with tau leptons in √s =13 TeV pp collisions with the ATLAS detector.
European Physical Journal C. Roč. 78, č. 2 (2018), s. 1-33, č. článku 154. ISSN 1434-6044. E-ISSN 1434-6052
R&D Projects: GA MŠMT(CZ) LTT17018
Institutional support: RVO:68378271
Keywords : ATLAS * CERN LHC Coll * background * channel cross section: upper limit * statistical analysis * experimental results * 13000 GeV-cms
OECD category: Particles and field physics
Impact factor: 4.843, year: 2018

A search for the direct production of charginos and neutralinos in final states with at least two hadronically decaying tau leptons is presented. The analysis uses a dataset of pp collisions corresponding to an integrated luminosity of 36.1 fb−1 , recorded with the ATLAS detector at the Large Hadron Collider at a centre-of-mass energy of 13 TeV. No significant deviation from the expected Standard Model background is observed. Limits are derived in scenarios of pair production and of and production in simplified models where the neutralinos and charginos decay solely via intermediate left-handed staus and tau sneutrinos, and the mass of the τ~L state is set to be halfway between the masses of the and the . Chargino masses up to 630 GeV are excluded at 95% confidence level in the scenario of direct production of for a massless . Common and masses up to 760 GeV are excluded in the case of production of and assuming a massless .
Permanent Link: http://hdl.handle.net/11104/0292161