A search is presented for a Higgs-like boson with mass in the range 45 to 195 GeV/$c^2$ decaying into a muon and a tau lepton. The dataset consists of proton-proton interactions at a centre-of-mass energy of 8 TeV, collected by the LHCb experiment, corresponding to an integrated luminosity of 2 fb$^{-1}$. The tau leptons are reconstructed in both leptonic and hadronic decay channels. An upper limit on the production cross-section multiplied by the branching fraction at 95 confidence level is set and ranges from 22 pb for a boson mass of 45 GeV/$c^2$ to 4 pb for a mass of 195 GeV/$c^2$.
Requirements for each decay channel and selection set. |
Table_1.pdf [83 KiB] HiDef png [122 KiB] Thumbnail [59 KiB] tex code |
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Expected number of background candidates from each component, total background with uncertainty, and number of observed candidates with statistical uncertainty, from each decay channel and selection set. |
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Relative systematic uncertainties (in %) on the normalisation factors in the cross-section calculation. When the uncertainty depends on $ m_H$ a range is indicated. |
Table_3.pdf [54 KiB] HiDef png [57 KiB] Thumbnail [25 KiB] tex code |
Created on 18 May 2024.