| Article | |
| Report number | arXiv:1904.08458 ; CERN-TH-2019-049 |
| Title | Discovering True Muonium at LHCb |
| Author(s) | Cid Vidal, Xabier (Santiago de Compostela U., IGFAE) ; Ilten, Philip (Birmingham U.) ; Plews, Jonathan (Birmingham U.) ; Shuve, Brian (Harvey Mudd Coll. ; UC, Riverside) ; Soreq, Yotam (CERN ; Technion) |
| Publication | 2019-09-11 |
| Imprint | 2019-04-17 |
| Number of pages | 12 |
| Note | 12 pages, 5 figures; v2: edits from comments and review, matched to PRD version |
| In: | Phys. Rev. D 100 (2019) 053003 |
| DOI | 10.1103/PhysRevD.100.053003 |
| Subject category | hep-ex ; Particle Physics - Experiment ; hep-ph ; Particle Physics - Phenomenology |
| Abstract | We study the potential of the LHCb experiment to discover, for the first time, the $\mu^+\mu^-$ true muonium bound state. We propose a search for the vector $1^3S_1$ state, $\mathcal{T\!M}$, which kinetically mixes with the photon and dominantly decays to $e^+e^-$. We demonstrate that a search for $\eta \to \gamma \mathcal{T\!M}$, $\mathcal{T\!M}\to e^+e^-$ 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 $\eta$ mass. |
| Copyright/License | publication: © 2019-2024 authors preprint: (License: arXiv nonexclusive-distrib 1.0) |
Corresponding record in: Inspire
Record created 2019-04-20, last modified 2021-10-08
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