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.; Gonzalez, J. Suarez; 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.; Zeid, S. Abu; 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.; Velde, C. Vander; 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
Journal of High Energy Physics, Volume 2017, Issue 10, article id. #180, 48 pp.
Fecha de publicación:
10
2017
Número de citas
18
Número de citas referidas
18
Descripción
A search for dark matter is performed looking for events with large
missing transverse momentum and a Higgs boson decaying either to a pair
of bottom quarks or to a pair of photons. The data from proton-proton
collisions at a center-of-mass energy of 13 TeV, collected in 2015 with
the CMS detector at the LHC, correspond to an integrated luminosity of
2.3 fb-1. Results are interpreted in the context of a
Z'-two-Higgs-doublet model, where the gauge symmetry of the standard
model is extended by a U(1)Z ' group, with a new massive Z'
gauge boson, and the Higgs sector is extended with four additional Higgs
bosons. In this model, a high-mass resonance Z' decays into a
pseudoscalar boson A and a light SM-like scalar Higgs boson, and the A
decays to a pair of dark matter particles. No significant excesses are
observed over the background prediction. Combining results from the two
decay channels yields exclusion limits in the signal cross section in
the m Z ' - m A phase space. For example, the
observed data exclude the Z' mass range from 600 to 1860 GeV,
for Z' coupling strength g Z ' = 0.8, the coupling of A with
dark matter particles g χ = 1, the ratio of the vacuum
expectation values tan β = 1, and m A = 300 GeV. The
results of this analysis are valid for any dark matter particle mass
below 100 GeV. [Figure not available: see fulltext.]