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.
Bibliographical reference
Journal of High Energy Physics, Volume 2018, Issue 6, article id. 101, 46 pp.
Advertised on:
6
2018
Citations
22
Refereed citations
22
Description
A search is presented for the associated production of a Higgs boson
with a top quark pair in the all-jet final state. Events containing
seven or more jets are selected from a sample of proton-proton
collisions at √{s}=13 TeV collected with the CMS detector at the
LHC in 2016, corresponding to an integrated luminosity of 35.9
fb-1. To separate the t\overline{t}H signal from the
irreducible t\overline{t}+b\overline{b} background, the analysis assigns
leading order matrix element signal and background probability densities
to each event. A likelihood-ratio statistic based on these probability
densities is used to extract the signal. The results are provided in
terms of an observed ttH signal strength relative to the standard model
production cross section μ = σ/ σ SM, assuming
a Higgs boson mass of 125 GeV. The best fit value is
\widehat{μ}=0.9± 0.7(stat)± 1.3(syst)=0.9±
1.5(tot) , and the observed and expected upper limits are, respectively,
μ < 3.8 and < 3.1 at 95% confidence levels.