Bibcode
Khachatryan, V.; 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.; Knünz, V.; König, A.; Krammer, M.; Krätschmer, I.; Liko, D.; Matsushita, T.; Mikulec, I.; Rabady, D.; Rahbaran, B.; Rohringer, H.; Schieck, J.; Schöfbeck, R.; Strauss, J.; Treberer-Treberspurg, W.; Waltenberger, W.; Wulz, C.-E.; Mossolov, V.; Shumeiko, N.; Suarez Gonzalez, J.; Alderweireldt, S.; Cornelis, T.; de Wolf, E. A.; Janssen, X.; Knutsson, A.; Lauwers, J.; Luyckx, S.; Ochesanu, S.; Rougny, R.; 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.; Heracleous, N.; Keaveney, J.; Lowette, S.; Moreels, L.; Olbrechts, A.; Python, Q.; Strom, D.; Tavernier, S.; van Doninck, W.; van Mulders, P.; van Onsem, G. P.; van Parijs, I.; Barria, P.; Caillol, C.; Clerbaux, B.; de Lentdecker, G.; Delannoy, H.; Fasanella, G.; Favart, L.; Gay, A. P. R.; Grebenyuk, A.; Karapostoli, G.; Lenzi, T.; Léonard, A.; Maerschalk, T.; Marinov, A.; Perniè, L.; Randle-Conde, A.; Reis, T.; Seva, T.; Vander Velde, C.; Vanlaer, P.; Yonamine, R.; Zenoni, F.; Zhang, F.; Beernaert, K.; Benucci, L.; Cimmino, A.; Crucy, S.; Dobur, D.; Fagot, A.; Garcia, G.; Gul, M. et al.
Referencia bibliográfica
Journal of High Energy Physics, Volume 2016, article id. #166, 44 pp.
Fecha de publicación:
1
2016
Número de citas
17
Número de citas referidas
17
Descripción
A search is presented for a singly produced excited bottom quark
(b*) decaying to a top quark and a W boson in the
all-hadronic, lepton+jets, and dilepton final states in proton-proton
collisions at √{s}=8 TeV recorded by the CMS experiment at the CERN
LHC. Data corresponding to an integrated luminosity of 19.7
fb-1 are used. No significant excess of events is observed
with respect to standard model expectations. We set limits at 95%
confidence on the product of the b* quark production cross
section and its branching fraction to tW. The cross section limits are
interpreted for scenarios including left-handed, right-handed, and
vector-like couplings of the b* quark and are presented in
the two-dimensional coupling plane based on the production and decay
coupling constants. The masses of the left-handed, right-handed, and
vector-like b* quark states are excluded at 95% confidence
below 1390, 1430, and 1530 GeV, respectively, for benchmark couplings.
This analysis gives the most stringent limits on the mass of the
b∗ quark to date. [Figure not available: see
fulltext.]