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Carlson, Carl E.; Rislow, Benjamin C.

doi:10.1103/physrevd.89.035003

Cited by 24 publications

(28 citation statements)

References 18 publications

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“…Both experimental [50][51][52] and theoretical [53] efforts are being carried out to reexamine the electronic hydrogen spectroscopy results. Other possible theoretical explanations include using new muonic forces [54][55][56] and new proton structures [57][58][59][60][61][62]. Using the value for the proton charge radius from muonic hydrogen gives a triton point charge radius of 1.6178 ± 0.040 fm.…”

Section: Triton Point Charge Radius and Resultsmentioning

confidence: 99%

Triton charge radius to next-to-next-to-leading order in pionless effective field theory

Vanasse¹

2017

Phys. Rev. C

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The triton point charge radius is calculated to next-to-next-to-leading order (NNLO) in pionless effective field theory (EFT(/ π)), yielding a prediction of 1.14±0.19 fm (leading order), 1.59±0.08 fm (next-to leading order), and 1.62 ± 0.03 fm (NNLO) in agreement with the current experimental extraction of 1.5978 ± 0.040 fm [1]. The error at NNLO is due to cutoff variation (∼ 1%) within a reasonable range of calculated cutoffs and from a EFT(/ π) error estimate (∼ 1.5%). In addition new techniques are introduced to add perturbative corrections to bound and scattering state calculations for short range effective field theories, but with a focus on their use in EFT(/ π).

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Section: Triton Point Charge Radius and Resultsmentioning

confidence: 99%

Triton charge radius to next-to-next-to-leading order in pionless effective field theory

Vanasse¹

2017

Phys. Rev. C

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“…Depending on the coupling to electrons, the φ particle in Fig. 12 can either exit the detector [65,69,80], or decay into e + e − pairs [81]. Both possibilities are interesting.…”

Section: Constraints From K-decaymentioning

confidence: 99%

“…The former case of course has the e + e − mass concentrated at the mass of the φ and with a mass choice, the couplings to the muon are fixed. The φ is certain to decay in the detector unless the electron couplings are very small, and theory studies show a definite e + e − peak above background [81], if the new particle in fact exists.…”

Section: Constraints From K-decaymentioning

confidence: 99%

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The proton radius puzzle

Carlson

2015

Progress in Particle and Nuclear Physics

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248

164

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The proton size, specifically its charge radius, was thought known to about 1% accuracy. Now a new method probing the proton with muons instead of electrons finds a radius about 4% smaller, and to boot gives an uncertainty limit of about 0.1%. We review the different measurements, some of the calculations that underlie them, some of the suggestions that have been made to resolve the conflict, and give a brief overview new related experimental initiatives. At present, however, the resolution to the problem remains unknown.

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“…Kaon decay: The scalar φ can, in principle, also be radiated from muons in K + → µ + ν µ decays, via the φ-muon coupling [24][25][26]. The branching ratio is given in Figure 4.…”

Section: Direct Signals In Rare Lepton Flavor Preserving Processesmentioning

confidence: 99%

Implications of a light “dark Higgs” solution to thegμ−2discrepancy

et al. 2016

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A light scalar φ with mass < ∼ 1 GeV and muonic coupling O(10 −3 ) would explain the 3.5 σ discrepancy between the Standard Model (SM) muon g − 2 prediction and experiment. Such a scalar can be associated with a light remnant of the Higgs mechanism in the"dark" sector. We suggest φ → l + l − bump hunting in µ → eννφ, µ − p → νµnφ (muon capture), and K ± → µ ± νφ decays as direct probes of this scenario. In a general setup, a potentially observable muon electric dipole moment < ∼ 10 −23 e · cm and lepton flavor violating decays τ → µ(e)φ or µ → eφ can also arise. Depending on parameters, a deviation in BR(H → µ + µ − ) from SM expectations, due to Higgs coupling misalignment, can result. We illustrate how the requisite interactions can be mediated by weak scale vector-like leptons that typically lie within the reach of future LHC measurements.

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Constraints to new physics models for the proton charge radius puzzle from the decayK+→μ++ν+e

Cited by 24 publications

References 18 publications

Triton charge radius to next-to-next-to-leading order in pionless effective field theory

Triton charge radius to next-to-next-to-leading order in pionless effective field theory

The proton radius puzzle

Implications of a light “dark Higgs” solution to thegμ−2discrepancy

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