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                        e3 decays and CKM unitarity

Cirigliano, Vincenzo; Neufeld, H.; Pichl, H.

doi:10.1140/epjc/s2004-01745-1

Cited by 98 publications

(138 citation statements)

References 26 publications

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“…In addition, the separation between non-local and local contribution quantitatively depends on the choice of the renormalization scale µ, only the whole result for f 4 being scale independent. This dependence is found to be large [20]; for instance, at three typical values of the scale one finds…”

Section: Us | From Semileptonic Kaon Decaysmentioning

confidence: 86%

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The role of Lattice QCD in flavor physics

Lubicz

2005

Nuclear Physics B - Proceedings Supplements

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Understanding flavor physics is one of the most important tasks of particle physics today, which is motivating an extraordinary experimental and theoretical investigational effort. Important progress in this field has already been achieved in the last few years, with Lattice QCD calculations playing an essential role in this effort. I will describe some lattice contributions to the studies of flavor physics by focusing particularly on the determination of the CKM matrix and on the study of CP violation in the Standard Model.

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Section: Us | From Semileptonic Kaon Decaysmentioning

confidence: 86%

“…Recent attempts in this direction include the estimate by resonance saturation obtained in Ref. [20] and the dispersive analysis of Ref. [21].…”

Section: Us | From Semileptonic Kaon Decaysmentioning

confidence: 99%

The role of Lattice QCD in flavor physics

Lubicz

2005

Nuclear Physics B - Proceedings Supplements

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“…[49]. δ K SU (2) is a long-distance isospin-breaking correction, and δ Kℓ em takes into account the long-distance QED corrections [50]. The vector form-factor at zeromomentum transfer is denoted by f + (0).…”

Section: Leptonic and Semileptonic Decays Of Kaons And Pionsmentioning

confidence: 99%

Simultaneous extraction of the Fermi constant and PMNS matrix elements in the presence of a fourth generation

Lacker

Menzel

2010

J. High Energ. Phys.

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Simultaneous Extraction of the Fermi constant and PMNS matrix elements in the presence of a fourth generationSeveral recent studies performed on constraints of a fourth generation of quarks and leptons suffer from the ad-hoc assumption that 3 × 3 unitarity holds for the first three generations in the neutrino sector. Only under this assumption one is able to determine the Fermi constant G F from the muon lifetime measurement with the claimed precision of G F = 1.16637(1) × 10 −5 GeV −2 . We study how well G F can be extracted within the framework of four generations from leptonic and radiative µ and τ decays, as well as from K ℓ3 decays and leptonic decays of charged pions, and we discuss the role of lepton universality tests in this context. We emphasize that constraints on a fourth generation from quark and lepton flavour observables and from electroweak precision observables can only be obtained in a consistent way if these three sectors are considered simultaneously. In the combined fit to leptonic and radiative µ and τ decays, K ℓ3 decays and leptonic decays of charged pions we find a p-value of 2.6 % for the fourth generation matrix element |U e4 | = 0 of the neutrino mixing matrix.

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“…The errors for the K ℓ3 electromagnetic corrections, given in Table 1, have been obtained within ChPT, estimating higher-order corrections by naive dimensional analysis [7,8]. Higher-order chiral corrections have a minor impact in the breaking of lepton universality.…”

Section: Theoretical Frameworkmentioning

confidence: 99%

Precision tests of the Standard Model with leptonic and semileptonic kaon decays

Sciascia

2008

Nuclear Physics B - Proceedings Supplements

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We present a global analysis of leptonic and semileptonic kaon decays data, including all recent results by BNL-E865, KLOE, KTeV, ISTRA+, and NA48. Experimental results are critically reviewed and combined, taking into account theoretical (both analytical and numerical) constraints on the semileptonic kaon form factors. This analysis leads to a very accurate determination of V us and allows us to perform several stringent tests of the Standard Model.

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K e3 decays and CKM unitarity

Cited by 98 publications

References 26 publications

The role of Lattice QCD in flavor physics

The role of Lattice QCD in flavor physics

Simultaneous extraction of the Fermi constant and PMNS matrix elements in the presence of a fourth generation

Precision tests of the Standard Model with leptonic and semileptonic kaon decays

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