ATLAS Run 1 searches for direct pair production of third-generation squarks at the Large Hadron Collider

0456951 - FZÚ 2016 RIV DE eng J - Článek v odborném periodiku
Aad, G. - Abbott, B. - Abdallah, J. - 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 2856 autorů
ATLAS Run 1 searches for direct pair production of third-generation squarks at the Large Hadron Collider.
European Physical Journal C. Roč. 75, č. 10 (2015), s. 510. ISSN 1434-6044. E-ISSN 1434-6052
Grant CEP: GA MŠMT(CZ) LG13009
Institucionální podpora: RVO:68378271
Klíčová slova: ATLAS * CERN LHC Coll * minimal supersymmetric standard model * supersymmetry * parameter space * squark * decay * cascade decay * stop: mass * lower limit
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 4.912, rok: 2015

This paper reviews and extends searches for the direct pair production of the scalar supersymmetric partners of the top and bottom quarks in proton–proton collisions collected by the ATLAS collaboration during the LHC Run 1. Most of the analyses use 20 fb−1 of collisions at a centre-of-mass energy of s√=8 TeV, although in some case an additional 4.7 fb−1 of collision data at s√=7 TeV are used. New analyses are introduced to improve the sensitivity to specific regions of the model parameter space. Since no evidence of third-generation squarks is found, exclusion limits are derived by combining several analyses and are presented in both a simplified model framework, assuming simple decay chains, as well as within the context of more elaborate phenomenological supersymmetric models.
Trvalý link: http://hdl.handle.net/11104/0257411