Discovering true muonium at LHCb
Discovering true muonium at LHCb
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DOI:
10.1103/physrevd.100.053003
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发表时间:
2019-04
影响因子:
5
通讯作者:
X. C. Vidal;P. Ilten;J. Plews;B. Shuve;Y. Soreq
中科院分区:
文献类型:
--
作者:
X. C. Vidal;P. Ilten;J. Plews;B. Shuve;Y. Soreq
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.