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.; 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.; Bondu, O.; Brochet, S.; Bruno, G.; Caudron, A. et al.
Referencia bibliográfica
Physical Review D, Volume 97, Issue 7, id.072008
Fecha de publicación:
4
2018
Revista
Número de citas
10
Número de citas referidas
8
Descripción
A search is presented for heavy vectorlike quarks (VLQs) that couple
only to light quarks in proton-proton collisions at √{s }=8 TeV at
the LHC. The data were collected by the CMS experiment during 2012 and
correspond to an integrated luminosity of 19.7 fb-1 . Both
single and pair production of VLQs are considered. The single-production
search is performed for down-type VLQs (electric charge of magnitude 1
/3 ), while the pair-production search is sensitive to up-type (charge
of magnitude 2 /3 ) and down-type VLQs. Final states with at least one
muon or one electron are considered. No significant excess over standard
model expectations is observed, and lower limits on the mass of VLQs are
derived. The lower limits range from 400 to 1800 GeV, depending on the
single-production cross section and the VLQ branching fractions B to W ,
Z , and Higgs bosons. When considering pair production alone, VLQs with
masses below 845 GeV are excluded for B (W )=1.0 , and below 685 GeV for
B (W )=0.5 , B (Z )=B (H )=0.25 . The results are more stringent than
those previously obtained for single and pair production of VLQs coupled
to light quarks.