Search for scalar charm quark pair production in pp collisions at √s = 8  TeV with the ATLAS detector

0454935 - FZÚ 2016 RIV US 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 - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Vrba, Václav … celkem 2823 autorů
Search for scalar charm quark pair production in pp collisions at √s = 8  TeV with the ATLAS detector.
Physical Review Letters. Roč. 114, č. 16 (2015), "161801-1"-"161801-19". ISSN 0031-9007. E-ISSN 1079-7114
Grant CEP: GA MŠMT(CZ) LG13009
Institucionální podpora: RVO:68378271
Klíčová slova: ATLAS * jet * charm * CERN LHC Coll * squark * mass * lower limit * kinematics * final state * ((n)jet) * experimental results
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 7.645, rok: 2015

The results of a dedicated search for pair production of scalar partners of charm quarks are reported. The search is based on an integrated luminosity of 20.3  fb-1 of pp collisions at s=8  TeV recorded with the ATLAS detector at the LHC. The search is performed using events with large missing transverse momentum and at least two jets, where the two leading jets are each tagged as originating from c quarks. Events containing isolated electrons or muons are vetoed. In an R-parity-conserving minimal supersymmetric scenario in which a single scalar-charm state is kinematically accessible, and where it decays exclusively into a charm quark and a neutralino, 95% confidence-level upper limits are obtained in the scalar-charm–neutralino mass plane such that, for neutralino masses below 200 GeV, scalar-charm masses up to 490 GeV are excluded.
Trvalý link: http://hdl.handle.net/11104/0255598