A Muon Collider Facility for Physics Discovery

Stratakis, D.; N., Mokhov,; Palmer, M.; Pastrone, N.; T., Raubenheimer,; Rogers, C.; Schulte, D.; Shiltsev, V.; Tang, J.; Yamamoto, A.; C., Aimè,; Mahmoud, M. A.; Bartosik, N.; E., Barzi,; A., Bersani,; Bertolin, A.; Bonesini, M.; B., Caiffi,; Casarsa, M.; Catanesi, M. G.; Cerri, A.; Curatolo, C.; M., Dam,; Damerau, H.; Matteis, E. De; Denizli, H.; B., Di Micco,; Dorigo, T.; S., Farinon,; Filthaut, F.; Fiorina, D.; Giove, D.; Greco, M.; C., Grojean,; Han, T.; Jindariani, S.; Koppenburg, P.; Krizka, K.; Li, Q.; Liu, Z.; Long, K. R.; Lucchesi, D.; S., Mariotto,; Meloni, F.; C., Merlassino,; Métral, E.; Montella, A.; R., Musenich,; Nardecchia, M.; Nardi, F.; Neuffer, D.; Griso, S. Pagan; Potamianos, K.; Prioli, M.; Radicioni, E.; Reina, L.; Riccardi, C.; L., Ristori,; Rossi, L.; Salvini, P.; Santiago, J.; A., Senol,; Sestini, L.; M., Sorbi,; Stark, G.; M., Statera,; X., Sun,; Vai, I.; Valente, R. U.

doi:10.48550/arxiv.2203.08033

Cited by 17 publications

(26 citation statements)

References 8 publications

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“…Likewise, extensive work had been done in what concerns the prospects for the discovery of such a NP mediator in the (near) future, in particular at (HL)-LHC [107,169], Belle II [161] and FCC-ee [107]. In recent years, an increasing interest for future muon colliders has been put forward by the high-energy particle physics community [110,113,170,171], and the prospects for the discovery of a Z in such facilities have been also considered (see [90]).…”

Section: A (Light) Flavour Violating Z At a Future Muon Collidermentioning

confidence: 99%

Prospects for a flavour violating $$Z^\prime $$ explanation of $$\Delta a_{\mu ,e}$$

et al. 2022

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The apparent tensions emerging from the comparison of experimental data of the anomalous magnetic moments of the muon and electron to the Standard Model predictions ($$\Delta a_{\mu ,e}$$ Δ a μ , e ) could be interpreted as a potential signal of New Physics. Models encompassing a light vector boson have been known to offer a satisfactory explanation to $$\Delta a_{\mu }$$ Δ a μ , albeit subject to stringent experimental constraints. Here we explore a minimal extension of the Standard Model via a leptophilic vector boson $$Z^\prime $$ Z ′ , under the hypothesis of strictly flavour-violating couplings of the latter to leptons. The most constraining observables to this ad-hoc construction emerge from lepton flavour universality violation (in Z and $$\tau $$ τ decays) and from rare charged lepton flavour violating transitions. Once these are accommodated, one can saturate the tensions in $$\Delta a_{\mu }$$ Δ a μ , but $$\Delta a_{e}$$ Δ a e is predicted to be Standard Model-like. We infer prospects for several observables, including leptonic Z decays and several charged lepton flavour violating processes. We also discuss potential signatures of the considered $$Z^\prime $$ Z ′ at a future muon collider, emphasising the role of the $$\mu ^+\mu ^- \rightarrow \tau ^+\tau ^- $$ μ + μ - → τ + τ - forward-backward asymmetry as a key probe of the model.

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Section: A (Light) Flavour Violating Z At a Future Muon Collidermentioning

confidence: 99%

Prospects for a flavour violating $$Z^\prime $$ explanation of $$\Delta a_{\mu ,e}$$

et al. 2022

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“…1 5 Pushing the energy frontier Several projects have been defined that extend the energy of colliders well beyond the TeV scale. Collisions at a centre-of-mass energy of 10 TeV and beyond could be achieved at a large (100 km circumference) hadron collider [59,60], at a linear electron-positron collider implementing novel accelerating techniques [61], or at compact circular muon colliders [62]. The potential of these machines for the SMEFT fit lies mainly in the energy-growing sensitivity to new physics.…”

Section: Qdmentioning

confidence: 99%

Snowmass White Paper: prospects for the measurement of top-quark couplings

Durieux¹,

Camacho²,

Mantani³

et al. 2022

Preprint

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In this contribution to the 2021 Snowmass community planning exercise that informs the American strategy for particle physics, we present the prospects for measurements of the top-quark couplings at future colliders. Projections are presented for the high luminosity phase of the Large Hadron Collider and a future Higgs/electroweak/top factory electron-positron collider. Results are presented for the expected bounds on Wilson coefficients of the relevant SMEFT operators from a global fit to the top physics sector.

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“…Likewise, extensive work had been done in what concerns the prospects for the discovery of such a NP mediator in the (near) future, in particular at (HL)-LHC [85,147], Belle II [139] and FCC-ee [85]. In recent years, an increasing interest for future muon colliders has been put forward by the high-energy particle physics community [88,91,148,149], and the prospects for the discovery of a Z in such facilities have been also considered (see [70]).…”

Section: A (Light) Flavour Violating Z At a Future Muon Collidermentioning

confidence: 99%

“…Cross section for the process µ The benchmark values for √ s = 0.5, 1, 3, 10 TeV have been chosen in agreement with recent muon collider design proposals [89,91,148,149]. With the anticipated integrated luminosity of O(ab −1 ) [91,148,149], the µ + µ − → τ + τ − cross section can be expected to be precisely measured at such a facility.…”

Section: Clfv Z Production At a Muon Collidermentioning

confidence: 99%

Prospects for a flavour violating $Z^\prime$ explanation of $Δa_{μ,e}$

Kriewald,

Orloff,

Pinsard

et al. 2022

Preprint

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The apparent tensions emerging from the comparison of experimental data of the anomalous magnetic moments of the muon and electron to the Standard Model predictions (∆a µ,e ) could be interpreted as a potential signal of New Physics. Models encompassing a light vector boson have been known to offer a satisfactory explanation to ∆a µ , albeit subject to stringent experimental constraints. Here we explore a minimal extension of the Standard Model via a leptophilic vector boson Z , under the hypothesis of strictly flavour-violating couplings of the latter to leptons. The most constraining observables to this ad-hoc construction emerge from lepton flavour universality violation (in Z and τ decays) and from rare charged lepton flavour violating transitions. Once these are accommodated, one can saturate the tensions in ∆a µ , but ∆a e is predicted to be Standard Model-like. We infer prospects for several observables, including leptonic Z decays and several charged lepton flavour violating processes. We also discuss potential signatures of the considered Z at a future muon collider, emphasising the role of the µ + µ − → τ + τ − forward-backward asymmetry as a key probe of the model.

show abstract

A Muon Collider Facility for Physics Discovery

Cited by 17 publications

References 8 publications

Prospects for a flavour violating $$Z^\prime $$ explanation of $$\Delta a_{\mu ,e}$$

Prospects for a flavour violating $$Z^\prime $$ explanation of $$\Delta a_{\mu ,e}$$

Snowmass White Paper: prospects for the measurement of top-quark couplings

Prospects for a flavour violating $Z^\prime$ explanation of $Δa_{μ,e}$

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