Search for Higgs and Z boson decays to Jψγ and Υ(nS)γ with the ATLAS detector
- Aad, G.
- et al., [Unknown]
- Aben, R.
- Angelozzi, I.
- Beemster, L.J.
- Bentvelsen, S.
- Berge, D.
- Bobbink, G.J.
- Bos, K.
- Brenner, L.
- Butti, P.
- Castelli, A.
- Colijn, A.P.
- de Jong, P.
- de Nooij, L.
- Deigaard, I.
- Deluca, C.
- Dhaliwal, S.
- Ferrari, P.
- Gadatsch, S.
- Geerts, D.A.A.
- Hartjes, F.
- Hessey, N.P.
- Hod, N.
- Igonkina, O.
- Karastathis, N.
- Kluit, P.
- Koffeman, E.
- Linde, F.
- Mahlstedt, J.
- Mechnich, J.
- Meyer, J.
- Oussoren, K.P.
- Sabato, G.
- Salek, D.
- Slawinska, M.
- Valencic, N.
- van den Wollenberg, W.
- van der Deijl, P.C.
- van der Geer, R.
- van der Graaf, H.
- van der Leeuw, R.
- van Vulpen, I.
- Verkerke, W.
- Vermeulen, J.C.
- Vreeswijk, M.
- Weits, H.
- Williams, S.
Publication date
January 2015
DOIAbstract
A search for the decays of the Higgs and Z bosons to J/ψγ and Υ(nS)γ (n=1,2,3) is performed with pp collision data samples corresponding to integrated luminosities of up to 20.3 fb−1 collected at s√=8 TeV with the ATLAS detector at the CERN Large Hadron Collider. No significant excess of events is observed above expected backgrounds and 95% C.L. upper limits are placed on the branching fractions. In the J/ψγ final state the limits are 1.5×10−3 and 2.6×10−6 for the Higgs and Z boson decays, respectively, while in the Υ(1S,2S,3S)γ final states the limits are (1.3,1.9,1.3)×10−3 and (3.4,6.5,5.4)×10−6, respectively
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