Search for top squarks in final states with one isolated lepton, jets, and missing transverse momentum in √s=13 TeV pp collisions with the ATLAS detector

0465620 - FZÚ 2017 RIV US eng J - Článek v odborném periodiku
Aaboud, M. - Aad, G. - Abbott, B. - Chudoba, Jiří - Havránek, Miroslav - Hejbal, Jiří - Jakoubek, Tomáš - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Vrba, Václav … celkem 2860 autorů
Search for top squarks in final states with one isolated lepton, jets, and missing transverse momentum in √s=13 TeV pp collisions with the ATLAS detector.
Physical Review D: Particles, Fields, Gravitation and Cosmology. Roč. 94, č. 5 (2016), s. 1-32, č. článku 052009. ISSN 1550-7998
Institucionální podpora: RVO:68378271
Klíčová slova: CERN LHC Coll * ATLAS * supersymmetry * background * signature * squark * final state * (n)jet lepton * experimental results * 13000 GeV-cms
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 4.557, rok: 2016

The results of a search for the top squark, the supersymmetric partner of the top quark, in final states with one isolated electron or muon, jets, and missing transverse momentum are reported. The search uses the 2015 LHC pp collision data at a center-of-mass energy of s=13  TeV recorded by the ATLAS detector and corresponding to an integrated luminosity of 3.2  fb−1. The analysis targets two types of signal models: gluino-mediated pair production of top squarks with a nearly mass-degenerate top squark and neutralino and direct pair production of top squarks, decaying to the top quark and the lightest neutralino. The experimental signature in both signal scenarios is similar to that of a top quark pair produced in association with large missing transverse momentum. No significant excess over the Standard Model background prediction is observed, and exclusion limits on gluino and top squark masses are set at 95% confidence level.
Trvalý link: http://hdl.handle.net/11104/0264091