Please use this identifier to cite or link to this item:
http://bura.brunel.ac.uk/handle/2438/17299
Title: | Search for dark matter produced in association with a Higgs boson decaying to γγ or τ <sup>+</sup> τ <sup>−</sup> at √s=13 TeV |
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, CE 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 Thomas, L Vander Velde, C Vanlaer, P Vannerom, D Wang, Q 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 |
Keywords: | Dark matter;Hadron-Hadron scattering (experiments) |
Issue Date: | 2018 |
Publisher: | Springer Verlag |
Citation: | Journal of High Energy Physics, 2018, 2018 (9) |
Abstract: | A 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 of τ leptons. The search is based on proton-proton collision data at a center-of-mass energy of 13TeV collected at the CERN LHC in 2016 and corresponding to an integrated luminosity of 35.9fb−1. 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 Z0-two-Higgs-doublet model (where Z0 is a new massive boson mediator) with an intermediate heavy pseudoscalar particle of mass mA = 300GeV and mDM = 100GeV, the Z0 masses from 550GeV to 1265GeV are excluded. For a baryonic Z0 model, with mDM = 1GeV, Z0 masses up to 615GeV 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 two τ leptons. |
URI: | http://bura.brunel.ac.uk/handle/2438/17299 |
DOI: | http://dx.doi.org/10.1007/JHEP09(2018)046 |
ISSN: | 1126-6708 http://dx.doi.org/10.1007/JHEP09(2018)046 |
Appears in Collections: | Dept of Mathematics Research Papers |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Fulltext.pdf | 919.5 kB | Adobe PDF | View/Open |
Items in BURA are protected by copyright, with all rights reserved, unless otherwise indicated.