Search for single vectorlike quarks in ppbar collisions at sqrt(s) = 1.96 TeV

0367570 - FZÚ 2013 RIV US eng J - Článek v odborném periodiku
Abazov, V. M. - Abbott, B. - Acharya, B.S. - Kupčo, Alexander - Lokajíček, Miloš … celkem 429 autorů
Search for single vectorlike quarks in ppbar collisions at sqrt(s) = 1.96 TeV.
Physical Review Letters. Roč. 106, č. 8 (2011), "081801-1"-"081801-7". ISSN 0031-9007. E-ISSN 1079-7114
Grant CEP: GA MŠMT LA08047
Výzkumný záměr: CEZ:AV0Z10100502
Klíčová slova: Tevatron * D0 * anti-p p * quark * mass
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 7.370, rok: 2011

We present a search for hypothetical vectorlike quarks in p (p) over bar collisions at root s = 1.96 TeV. The data were collected by the D0 detector at the Fermilab Tevatron Collider and correspond to an integrated luminosity of 5.4 fb(-1). We select events with a final state composed of a W or Z boson and a jet consistent with a heavy object decay. We observe no significant excess in comparison to the background prediction and set limits on production cross sections for vectorlike quarks decaying to W + jet and Z + jet. These are the most stringent limits to date for electroweak single vectorlike quark production at hadron colliders.
Trvalý link: http://hdl.handle.net/11104/0202200