On the feasibility of a pulsed 14 TeV c.m.e. muon collider in the LHC tunnel

Neuffer, D.; Shiltsev, Vladimir

doi:10.1088/1748-0221/13/10/t10003

Cited by 45 publications

(46 citation statements)

References 32 publications

(46 reference statements)

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“…An innovative approach of producing low-emittance µ + µpairs [41] followed by acceleration and high-energy collisions is also under study. The LHC tunnel may be well suited for a future facility hosting a 14 TeV muon collider [42].…”

Section: Shared Technology Developmentmentioning

confidence: 99%

Particle physics at accelerators in the United States and Asia

Bhat

Taylor

2020

Nat. Phys.

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Particle physics experiments in the United States and Asia have greatly contributed to the understanding of elementary particles and their interactions. With the recent discovery of the Higgs boson at CERN, interest in the development of next-generation colliders has been rekindled. A linear electron-positron collider in Japan and a circular collider in China have been proposed for precision studies of the Higgs boson. In addition to the Higgs programme, new accelerator-based long-baseline neutrino mega-facilities are being built in the UnitedStates and Japan. Here, we outline the present status of key particle physics programmes at accelerators and future plans in the United States and Asia that largely complement approaches being explored in the European Strategy for Particle Physics Update. We encourage the pursuit of this global approach, reaching beyond regional boundaries for optimized development and operations of major accelerator facilities worldwide, to ensure active and productive future of the field.The discovery [1,2] of the Higgs boson in 2012 completed the Standard Model (SM) of particle physics while also opening a new portal to the unknown. In the years since, the data samples accumulated by the ATLAS and CMS experiments at the Large Hadron Collider (LHC) have grown 25-fold allowing for measurements of a range of properties of the Higgs boson and its couplings to many SM particles to 10-25% precision [3,4]. No evidence of any excursion from SM predictions has been found, but the hopes that the "Higgs portal" can be exploited to search for phenomena beyond the SM persist. The collision energy of the LHC is to be raised to 14 TeV in the next data-taking period scheduled for 2021-2023, aiming to double the data set for a total integrated luminosity of ~300 fb -1 .The high-luminosity upgrade of the LHC will increase the proton-proton collision data sets by an order of magnitude to 3000 fb -1 over the operation period 2027-2037. Most Higgs couplings will then be measurable to a few percent accuracy [5], allowing either discovery of deviations from SM predictions, -potentially evidence for new physics -or further show the SM to be accurate to an astonishing precision.The Higgs discovery has renewed interest worldwide in the development of next generation colliders. Due to the Higgs mass of 125 GeV, several proposals for an electron-positron Higgs Factory have been put forth: the 250 GeV International Linear Collider (ILC) [6][7][8] in Japan, the 380 GeV Compact Linear Collider (CLIC) [9] based on a novel two-beam acceleration technique at CERN, the Future Circular Collider [10] (FCC-ee) at CERN, and the Circular Electron-Positron Collider (CEPC) [11] in China. Both FCC-ee and CEPC are proposed to be followed by a proton-proton collider. Such an electron-positron machine is expected to provide exquisitely precise measurements of the Higgs boson couplings, in search of deviations from the SM. At higher energies, direct measurements of the Higgs self-coupling, essential to unravel the details of electrowe...

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Section: Shared Technology Developmentmentioning

confidence: 99%

Particle physics at accelerators in the United States and Asia

Bhat

Taylor

2020

Nat. Phys.

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“…4 of Ref. [58]). In this scheme, the civil construction costs can be reduced by reusing the existing 27 km LHC tunnel, the 7 km SPS tunnel and the accompanying CERN infrastructure.…”

Section: A 14 Tev Muon Collider In the Lhc Tunnelmentioning

confidence: 88%

“…The technical feasibility of a pulsed 14 TeV CoM energy MC in the CERN LHC tunnel has recently been considered [58] as sketched in Fig. 16.…”

Section: A 14 Tev Muon Collider In the Lhc Tunnelmentioning

confidence: 99%

“…Figure 16. Schematic layout of a pulsed MC at a beam energy of 7 TeV in the LHC tunnel [58] with modifications indicated in red.…”

Section: A 14 Tev Muon Collider In the Lhc Tunnelmentioning

confidence: 99%

“…Furthermore, customized concepts that consider re-use of the LHC tunnel as in Ref. [58,65] are interesting and should also be studied in greater detail.…”

Section: Accelerationmentioning

confidence: 99%

See 2 more Smart Citations

The Future Prospects of Muon Colliders and Neutrino Factories

Boscolo

Delahaye

Palmer

2019

Reviews of Accelerator Science and Technology

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The potential of muon beams for high energy physics applications is described along with the challenges of producing high quality muon beams. Two proposed approaches for delivering high intensity muon beams, a proton driver source and a positron driver source, are described and compared. The proton driver concepts are based on the studies from the Muon Accelerator Program (MAP). The MAP effort focused on a path to deliver muon-based facilities, ranging from neutrino factories to muon colliders, that could span research needs at both the intensity and energy frontiers. The Low EMittance Muon Accelerator (LEMMA) concept, which uses a positron-driven source, provides an attractive path to very high energy lepton colliders with improved particle backgrounds. The recent study of a 14 TeV muon collider in the LHC tunnel, which could leverage the existing CERN injectors and infrastructure and provide physics reach comparable to the 100 TeV FCC-hh, at lower cost and with cleaner physics conditions, is also discussed. The present status of the design and R&D efforts towards each of these sources is described. A summary of important R&D required to establish a facility path for each concept is also presented.

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Systematically testing singlet models for (g − 2)μ

Capdevilla

Curtin

Kahn

et al. 2022

J. High Energ. Phys.

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We comprehensively study all viable new-physics scenarios that resolve the muon (g − 2)μ anomaly with only Standard Model singlet particles coupled to muons via renormalizable interactions. Since such models are only viable in the MeV–TeV mass range and require sizable muon couplings, they predict abundant accelerator production through the same interaction that resolves the anomaly. We find that a combination of fixed-target (NA64μ, M3), B-factory (BABAR, Belle II), and collider (LHC, muon collider) searches can cover nearly all viable singlets scenarios, independently of their decay modes. In particular, future muon collider searches offer the only certain test of singlets above the GeV scale, covering all higher masses up to the TeV-scale unitarity limit for these models. Intriguingly, we find that $$ \mathcal{O}\left(100\ \mathrm{GeV}\right) $$ O 100 GeV muon colliders may yield better coverage for GeV-scale singlets compared to TeV-scale concepts, which has important implications for the starting center-of-mass energy of a staged muon collider program.

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On the feasibility of a pulsed 14 TeV c.m.e. muon collider in the LHC tunnel

Cited by 45 publications

References 32 publications

Particle physics at accelerators in the United States and Asia

Particle physics at accelerators in the United States and Asia

The Future Prospects of Muon Colliders and Neutrino Factories

Systematically testing singlet models for (g − 2)μ

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