True muonium resonant production at $e^+e^-$ colliders with standard crossing angle
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866909317969477632 |
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| author | Gargiulo, Ruben Di Meco, Elisa Paesani, Daniele Palmisano, Stefano Diociaiuti, Eleonora Sarra, Ivano |
| author_facet | Gargiulo, Ruben Di Meco, Elisa Paesani, Daniele Palmisano, Stefano Diociaiuti, Eleonora Sarra, Ivano |
| contents | True muonium ($μ^+μ^-$) is the heaviest and smallest bound state not involving quantum chromodynamics, after true tauonium ($τ^+τ^-$) and mu-tauonium ($μ^\pmτ^\mp$). Unlike atoms containing $τ$ particles, the muon lifetime is long enough to allow observation of true muonium (TM) decays and transitions. One of the proposed methods to observe the spin 1 fundamental state of TM, which has the smallest lifetime among TM spin 1 states, was to build an $e^+e^-$ collider with a large crossing angle ($θ\sim 30^\circ$) in order to provide TM with a large boost and detect its decay vertex in $e^+ e^-$. The following paper will instead show that TM excited states ($n\geq2$) can be observed in relatively large quantities ($\mathcal{O}$(10)/month) at a feasible $e^+e^-$ collider with standard crossing angles, after setting their center-of-mass energy to the TM mass ($\sim2m_μ=211.4$ MeV). |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2309_11683 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | True muonium resonant production at $e^+e^-$ colliders with standard crossing angle Gargiulo, Ruben Di Meco, Elisa Paesani, Daniele Palmisano, Stefano Diociaiuti, Eleonora Sarra, Ivano High Energy Physics - Phenomenology High Energy Physics - Experiment True muonium ($μ^+μ^-$) is the heaviest and smallest bound state not involving quantum chromodynamics, after true tauonium ($τ^+τ^-$) and mu-tauonium ($μ^\pmτ^\mp$). Unlike atoms containing $τ$ particles, the muon lifetime is long enough to allow observation of true muonium (TM) decays and transitions. One of the proposed methods to observe the spin 1 fundamental state of TM, which has the smallest lifetime among TM spin 1 states, was to build an $e^+e^-$ collider with a large crossing angle ($θ\sim 30^\circ$) in order to provide TM with a large boost and detect its decay vertex in $e^+ e^-$. The following paper will instead show that TM excited states ($n\geq2$) can be observed in relatively large quantities ($\mathcal{O}$(10)/month) at a feasible $e^+e^-$ collider with standard crossing angles, after setting their center-of-mass energy to the TM mass ($\sim2m_μ=211.4$ MeV). |
| title | True muonium resonant production at $e^+e^-$ colliders with standard crossing angle |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2309.11683 |