Search for scalar top quark production in p¯p collisions at √ s = 1.96 TeV

0389135 - FZÚ 2013 RIV US eng J - Článek v odborném periodiku
Aaltonen, T. - Gonzalez, B.A. - Amerio, S. - Lysák, Roman … celkem 474 autorů
Search for scalar top quark production in p¯p collisions at √ s = 1.96 TeV.
Journal of High Energy Physics. Roč. 2012, č. 10 (2012), 1-8. ISSN 1126-6708
Grant CEP: GA MŠMT LC527
Výzkumný záměr: CEZ:AV0Z10100502
Klíčová slova: supersymmetry * stop * multiple jet production * Batavia TEVATRON * CDF
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 5.618, rok: 2012
http://arxiv.org/abs/arXiv:1203.4171

We report on a search for the supersymmetric partner of the top quark (scalar top) decaying into a charm quark and a neutralino in p-pbar collisions at sqrt(s)=1.96 TeV. The data sample, collected by the CDFII detector at the Fermilab Tevatron, corresponds to an integrated luminosity of 2.6 fb-1. Candidate events are selected by requiring two or more jets and a large imbalance in the transverse momentum. To enhance the analysis sensitivity, at least one of the jets is required to be identified as originating from a charm quark using an algorithm specifically designed for this analysis. The selected events are in good agreement with standard model predictions. In the case of large mass splitting between the scalar top quark and the neutralino we exclude a scalar top quark mass below 180 GeV at 95% confidence level.
Trvalý link: http://hdl.handle.net/11104/0218014