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Física Experimental de Alta Energía

Publicaciones

Search for a Multi-Higgs Boson Cascade in W+W−bb¯ events with the ATLAS detector in pp collisions at √s = 8 TeV

Publicaciones

Search for a Multi-Higgs Boson Cascade in W+W−bb¯ events with the ATLAS detector in pp collisions at √s = 8 TeV

Research areas:

Física Experimental de Alta Energía

Year:

2013

Type of Publication:

In Proceeding

Authors:

Journal:

Phys.Rev.

Volume:

D89

Pages:

11

Abstract:

A search is presented for new particles in an extension to the Standard Model that includes a heavy Higgs boson (H0), an intermediate charged Higgs boson (H±), and a light Higgs boson (h0). The analysis searches for events involving the production of a single heavy neutral Higgs boson which decays to the charged Higgs boson and a W boson, where the charged Higgs boson subsequently decays into a W boson and the lightest neutral Higgs boson decaying to a bottom-antibottom-quark pair. Such a cascade results in a W-boson pair and a bottom–antibottom-quark pair in the final state. Events with exactly one lepton, missing transverse momentum, and at least four jets are selected from a data sample corresponding to an integrated luminosity of 20.3 fb−1, collected by the ATLAS detector in proton-proton collisions at √s = 8 TeV at the LHC. The data are found to be consistent with Standard Model predictions, and 95% confidence level upper limits are set on the product of cross-section and branching ratio. These limits range from 0.065 pb to 43 pb as a function of H0 and H± masses, with mh0 fixed at 125 GeV.

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