Searching for processes with invisible particles using a matrix element-based method

Mattelaer, Olivier;et.al.
(2018) Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 787, p. 100-104 (2018)

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We propose a fully flexible method to discriminate between signal and background using a matrixelement-based method in the presence of multiple invisible particles. The proposed method performsa mapping of the measured final state onto an observable which improves the separation betweensignal and background using their matrix elements. To show how performant this generic methodis in separating signal from background, we apply it to the prominent partly invisible decay of aHiggs boson into a muon-antimuon pair and two muon-neutrinos via two W bosons.
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Mattelaer, O., & et al. (2018). Searching for processes with invisible particles using a matrix element-based method. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, 787, 100-104. https://doi.org/10.1016/j.physletb.2018.10.044 (Original work published 2018)