Bibcode
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Flechl, M.; Friedl, M.; Frühwirth, R.; Ghete, V. M.; Hartl, C.; Hörmann, N.; Hrubec, J.; Jeitler, M.; König, A.; Krätschmer, I.; Liko, D.; Matsushita, T.; Mikulec, I.; Rabady, D.; Rad, N.; Rahbaran, B.; Rohringer, H.; Schieck, J.; Strauss, J.; Waltenberger, W.; Wulz, C.-E.; Dvornikov, O.; Makarenko, V.; Mossolov, V.; Suarez Gonzalez, J.; Zykunov, V.; Shumeiko, N.; Alderweireldt, S.; De Wolf, E. A.; Janssen, X.; Lauwers, J.; Van De Klundert, M.; Van Haevermaet, H.; Van Mechelen, P.; Van Remortel, N.; Van Spilbeeck, A.; Abu Zeid, S.; Blekman, F.; D'Hondt, J.; Daci, N.; De Bruyn, I.; Deroover, K.; Lowette, S.; Moortgat, S.; Moreels, L.; Olbrechts, A.; Python, Q.; Skovpen, K.; Tavernier, S.; Van Doninck, W.; Van Mulders, P.; Van Parijs, I.; Brun, H.; Clerbaux, B.; De Lentdecker, G.; Delannoy, H.; Fasanella, G.; Favart, L.; Goldouzian, R.; Grebenyuk, A.; Karapostoli, G.; Lenzi, T.; Léonard, A.; Luetic, J.; Maerschalk, T.; Marinov, A.; Randle-conde, A.; Seva, T.; Vander Velde, C.; Vanlaer, P.; Vannerom, D.; Yonamine, R.; Zenoni, F.; Zhang, F.; Cimmino, A.; Cornelis, T.; Dobur, D.; Fagot, A.; Gul, M.; Khvastunov, I.; Poyraz, D.; Salva, S.; Schöfbeck, R.; Tytgat, M.; Van Driessche, W.; Yazgan, E.; Zaganidis, N.; Bakhshiansohi, H.; Beluffi, C.; Bondu, O.; Brochet, S. et al.
Referencia bibliográfica
Journal of High Energy Physics, Volume 2017, Issue 5, article id. #29, 37 pp.
Fecha de publicación:
5
2017
Número de citas
20
Número de citas referidas
18
Descripción
A search for single production of vector-like quarks, T and B, decaying
into a Z boson and a top or a bottom quark, respectively, is presented.
The search is performed using data collected by the CMS experiment at
the LHC in proton-proton collisions at √{s}=13 TeV, corresponding
to an integrated luminosity of 2.3fb-1. An exotic T quark
production mode through the decay of a heavy Z' resonance is also
considered. The search is performed in events with a Z boson decaying
leptonically, accompanied by a bottom or a top quark decaying
hadronically. No excess of events is observed over the standard model
background expectation. Products of production cross section and
branching fraction for T and B quarks from 1.26 and 0.13 pb are excluded
at 95% confidence level for the range of resonance mass considered,
which is between 0.7 and 1.7 TeV. Limits on the product of the Z' boson
production cross section and branching fraction, with the Z' boson
decaying to the Tt final state, are set between 0.31 and 0.13 pb, for Z'
boson masses in the range from 1.5 to 2.5 TeV. This is the first search
at 13 TeV for single production of vector-like quarks in events with a Z
boson decaying leptonically accompanied by boosted jets. [Figure not
available: see fulltext.]