Erratum to: Precise measurement of Γ(K→e ν(γ))/Γ(K→μ ν(γ)) and study of K→e ν γ

Ambrosino, F.; Antonelli, A.; Antonelli, M.; Archilli, F.; Beltrame, P.; Bencivenni, G.; Bini, C.; Bloise, C.; Bocchetta, S. S.; Bossi, F.; Branchini, P.; Capon, G.; Capriotti, D.; Capussela, T.; Ceradini, F.; Ciambrone, P.; Lucia, E. De; Santis, A. De; Simone, P. De; Zorzi, G. De; Denig, A.; Domenico, A. Di; Donato, C. Di; Micco, B. Di; Dreucci, M.; Felici, G.; Fiore, S.; Franzini, P.; Gatti, C.; Gauzzi, P.; Giovannella, S.; Graziani, E.; Jacewicz, M.; Kulikov, V. V.; Lanfranchi, G.; Lee‐Franzini, J.; Martini, M.; Massarotti, P.; Meola, S.; Miscetti, S.; Moulson, M.; Müller, S.; Murtas, F.; Napolitano, M.; Nguyen, F.; Palutan, M.; Passeri, A.; Patera, V.; Santangelo, P.; Sciascia, B.; Sibidanov, A.; Spadaro, T.; Tortora, L.; Valente, P.; Venanzoni, G.; Versaci, R.

doi:10.1140/epjc/s10052-009-1217-6

Cited by 21 publications

(26 citation statements)

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“…where the final uncertainty accounts for higher order chiral corrections of expected size ∆ e 2 Q 2 × m 2 K /(4πF π ) 2 . The PDG [54] average of previous measurements done by the NA62 [58] and KLOE [59] experiments is…”

Section: Kaon Decaysmentioning

confidence: 99%

Testing Lepton Flavor Universality with Pion, Kaon, Tau, and Beta Decays

Bryman,

Cirigliano,

Crivellin

et al. 2021

Preprint

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We present an overview of searches for violation of lepton flavor universality with focus on low energy precision probes using pions, kaons, tau leptons, and nuclear beta decays. The current experimental results are reviewed, the theoretical status within the context of the Standard Model is summarized, and future prospects (both experimental and theoretical) are discussed. We review the implications of these measurements for physics beyond the Standard Model by performing a global modelindependent fit to modified W couplings to leptons and four-fermion operators. We also discuss new physics in the context of simplified models and review Standard Model extensions with focus on those that can explain a possible deviation from unitarity of the Cabibbo-Kobayashi-Maskawa quark mixing matrix.

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Section: Kaon Decaysmentioning

confidence: 99%

Testing Lepton Flavor Universality with Pion, Kaon, Tau, and Beta Decays

Bryman,

Cirigliano,

Crivellin

et al. 2021

Preprint

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“…This can enhance R K by O(1%) for large tanβ and M H (for example tanβ = 40 and M H =500 GeV) [2]. The current world average (including only final results, and thus ignoring the preliminary NA48/2 ones) is R W A K = (2.490 ± 0.030) × 10 −5 , dominated by a recent measurement by the KLOE collaboration [5].…”

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confidence: 94%

Lepton universality tests with leptonic kaon decays in NA62

Lazzeroni¹

2012

AIP Conference Proceedings

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The NA62 experiment at CERN aims to use rare kaon decays to search for new phenomena beyond the Standard Model. During the current short term phase (data taking completed in years 2007-8), the ratio R K = Γ(K + → eν e (γ))/Γ(K + → µν µ (γ)) of leptonic decay rates is studied, which tests the structure of weak interactions and lepton flavour universality. In this paper, the R K analysis is summarized, and the preliminary result is discussed, based on 59963 K + → eν e candidates collected in 2007.

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“…In Sections IV-VI the experimental data of Refs. [9][10][11][12][13] are briefly described and compared with our theoretical results and with the predictions of Chiral Perturbation Theory (ChPT) at order O(e 2 p 4 ) [14 -18].…”

Section: Introductionmentioning

confidence: 99%

Comparison of lattice QCD+QED predictions for radiative leptonic decays of light mesons with experimental data

Frezzotti,

Garofalo,

Lubicz

et al. 2020

Preprint

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We present a comparison of existing experimental data for the radiative leptonic decays P → ν γ, where P = K or π and = e or µ, from the KLOE, PIBETA, E787, ISTRA+ and OKA collaborations with theoretical predictions based on the recent non-perturbative determinations of the structure-dependent vector and axial-vector form factors, F V and F A respectively. These were obtained using lattice QCD+QED simulations at order O(α em ) in the electromagnetic coupling. We find good agreement with the KLOE data on K → eν e γ decays from which the form factor F + = F V + F A can be determined. For K → µν µ γ decays we observe differences of up to 3 -4 standard deviations at large photon energies between the theoretical predictions and the data from the E787, ISTRA+ and OKA experiments and similar discrepancies in some kinematical regions with the PIBETA experiment on radiative pion decays. A global study of all the kaon-decay data within the Standard Model results in a poor fit, largely because at large photon energies the KLOE and E787 data cannot be reproduced simultaneously in terms of the same form factor F + . The discrepancy between the theoretical and experimental values of the form factor F − = F V − F A is even more pronounced. These observations motivate future improvements of both the theoretical and experimental determinations of the structure-dependent form factors F + and F − , as well as further theoretical investigations of models of "new physics" which might for example, include possible flavor changing interactions beyond V − A and/or non-universal corrections to the lepton couplings.

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Erratum to: Precise measurement of Γ(K→e ν(γ))/Γ(K→μ ν(γ)) and study of K→e ν γ

Cited by 21 publications

References 0 publications

Testing Lepton Flavor Universality with Pion, Kaon, Tau, and Beta Decays

Testing Lepton Flavor Universality with Pion, Kaon, Tau, and Beta Decays

Lepton universality tests with leptonic kaon decays in NA62

Comparison of lattice QCD+QED predictions for radiative leptonic decays of light mesons with experimental data

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