Discovering True Muonium at LHCb

We study the potential of the LHCb experiment to discover, for the first time, the μ+μ- true muonium bound state. We propose a search for the vector 13S1 state, TM, which kinetically mixes with the photon and dominantly decays to e+e-. We demonstrate that a search for η→γTM, TM→e+e- in a displaced v...

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Detalles Bibliográficos
Autores principales: Cid Vidal, Xabier, Ilten, Philip, Plews, Jonathan, Shuve, Brian, Soreq, Yotam
Lenguaje:eng
Publicado: 2019
Materias:
hep-ex
Particle Physics - Experiment
hep-ph
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.100.053003
http://cds.cern.ch/record/2672259
Descripción
Sumario:We study the potential of the LHCb experiment to discover, for the first time, the μ+μ- true muonium bound state. We propose a search for the vector 13S1 state, TM, which kinetically mixes with the photon and dominantly decays to e+e-. We demonstrate that a search for η→γTM, TM→e+e- in a displaced vertex can exceed a significance of 5 standard deviations assuming statistical uncertainties. We present two possible searches: an inclusive search for the e+e- vertex, and an exclusive search which requires an additional photon and a reconstruction of the η mass.

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