Search for dark matter produced in association with a Higgs boson decaying to or + at $$ sqrt{s}=13 $$ TeV Academic Article uri icon

abstract

  • AbstractA search for dark matter particles is performed by looking for events with large transverse momentum imbalance and a recoiling Higgs boson decaying to either a pair of photons or a pair ofleptons. The search is based on proton-proton collision data at a center-of-mass energy of 13 TeV collected at the CERN LHC in 2016 and corresponding to an integrated luminosity of 35.9 fb1. No significant excess over the expected standard model background is observed. Upper limits at 95% confidence level are presented for the product of the production cross section and branching fraction in the context of two benchmark simplified models. For the Z-two-Higgs-doublet model (where Zis a new massive boson mediator) with an intermediate heavy pseudoscalar particle of massmA= 300 GeV andmDM= 100 GeV, the Zmasses from 550 GeV to 1265 GeV are excluded. For a baryonic Zmodel, withmDM= 1 GeV, Zmasses up to 615 GeV are excluded. Results are also presented for the spin-independent cross section for the dark matter-nucleon interaction as a function of the mass of the dark matter particle. This is the first search for dark matter particles produced in association with a Higgs boson decaying to twoleptons.

published proceedings

  • Journal of High Energy Physics

author list (cited authors)

  • Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., ... Woods, N.

complete list of authors

  • Sirunyan, AM||Tumasyan, A||Adam, W||Ambrogi, F||Asilar, E||Bergauer, T||Brandstetter, J||Dragicevic, M||Erö, J||Escalante Del Valle, A||Flechl, M||Frühwirth, R||Ghete, VM||Hrubec, J||Jeitler, M||Krammer, N||Krätschmer, I||Liko, D||Madlener, T||Mikulec, I||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, EA||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, AK||Lenzi, T||Luetic, J||Postiau, N||Starling, E||Tho

publication date

  • January 1, 2018 11:11 AM