Bibcode
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.; Flechl, M.; Friedl, M.; Frühwirth, R.; Ghete, V. M.; Grossmann, J.; Hrubec, J.; Jeitler, M.; König, A.; Krammer, N.; Krätschmer, I.; Liko, D.; Madlener, T.; Mikulec, I.; Pree, E.; Rad, N.; Rohringer, H.; Schieck, J.; Schöfbeck, R.; Spanring, M.; Spitzbart, D.; Taurok, A.; Waltenberger, W.; Wittmann, J.; Wulz, C.-E.; Zarucki, M.; Chekhovsky, V.; Mossolov, V.; Suarez Gonzalez, J.; De Wolf, E. A.; Di Croce, D.; Janssen, X.; Lauwers, J.; Pieters, M.; Van De Klundert, M.; Van Haevermaet, H.; Van Mechelen, P.; Van Remortel, N.; Abu Zeid, S.; Blekman, F.; D'Hondt, J.; De Bruyn, I.; De Clercq, J.; Deroover, K.; Flouris, G.; Lontkovskyi, D.; Lowette, S.; Marchesini, I.; Moortgat, S.; Moreels, L.; Python, Q.; Skovpen, K.; Tavernier, S.; Van Doninck, W.; Van Mulders, P.; Van Parijs, I.; Beghin, D.; Bilin, B.; Brun, H.; Clerbaux, B.; De Lentdecker, G.; Delannoy, H.; Dorney, B.; Fasanella, G.; Favart, L.; Goldouzian, R.; Grebenyuk, A.; Kalsi, A. K.; Lenzi, T.; Luetic, J.; Seva, T.; Starling, E.; Vander Velde, C.; Vanlaer, P.; Vannerom, D.; Yonamine, R.; Cornelis, T.; Dobur, D.; Fagot, A.; Gul, M.; Khvastunov, I.; Poyraz, D.; Roskas, C.; Trocino, D.; Tytgat, M.; Verbeke, W.; Vermassen, B.; Vit, M.; Zaganidis, N.; Bakhshiansohi, H. et al.
Referencia bibliográfica
Journal of High Energy Physics, Volume 2018, Issue 8, article id. 66, 55 pp.
Fecha de publicación:
8
2018
Número de citas
19
Número de citas referidas
18
Descripción
Results of a search for the standard model Higgs boson produced in
association with a top quark pair ( t\overline{t}H ) in final states
with electrons, muons, and hadronically decaying τ leptons are
presented. The analyzed data set corresponds to an integrated luminosity
of 35.9 fb-1 recorded in proton-proton collisions at
√{s}=13 TeV by the CMS experiment in 2016. The sensitivity of the
search is improved by using matrix element and machine learning methods
to separate the signal from backgrounds. The measured signal rate
amounts to 1.23 - 0.43 + 0.45 times the production
rate expected in the standard model, with an observed (expected)
significance of 3.2 σ (2.8 σ), which represents evidence for
t\overline{t}H production in those final states. An upper limit on the
signal rate of 2.1 times the standard model production rate is set at
95% confidence level. [Figure not available: see fulltext.]