Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector

0389796 - FZÚ 2013 RIV DE eng J - Článek v odborném periodiku
Aad, G. - Abbott, B. - Abdallah, J. - Chudoba, Jiří - Gallus, Petr - Gunther, Jaroslav - Hruška, I. - Juránek, Vojtěch - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lipinský, L. - Lokajíček, Miloš - Marčišovský, Michal - Mikeštíková, Marcela - Myška, Miroslav - Němeček, Stanislav - Panušková, M. - Růžička, Pavel - Schovancová, Jaroslava - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Tic, Tomáš - Valenta, J. - Vrba, Václav - Zeman, Martin … celkem 3052 autorů
Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector.
European Physical Journal C. Roč. 72, č. 4 (2012), s. 1-21. ISSN 1434-6044. E-ISSN 1434-6052
Grant CEP: GA MŠMT LA08032
Výzkumný záměr: CEZ:AV0Z10100502
Klíčová slova: ATLAS * LHC * neutralino mass * color charge * long-lived * R-hadron * new physics
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 5.247, rok: 2012
http://arxiv.org/abs/arXiv:1201.5595

New metastable massive particles with electric and colour charge are features of many theories beyond the Standard Model. A search is performed for long-lived gluino-based R-hadrons with the ATLAS detector at the LHC using a data sample corresponding to an integrated luminosity of 31 pb^-1. We search for evidence of particles that have come to rest in the ATLAS detector and decay at some later time during the periods in the LHC bunch structure without proton-proton collisions. No significant deviations from the expected backgrounds are observed, and a cross-section limit is set. It can be interpreted as excluding gluino-based R-hadrons with masses less than 341 GeV at the 95% C.L., for lifetimes from 10^-5 to 10^3 seconds and a neutralino mass of 100 GeV.
Trvalý link: http://hdl.handle.net/11104/0218652