[PDF] Top 20 The role of mesons in muon g − 2
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The role of mesons in muon g − 2
... the muon is a hot topic these days in view of two new muon g −2 experiments to ...A muon spinning in a homogeneous magnetic field B in absence of an electric field E shows a Larmor spin ... See full document
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The LbL contribution to the muon g-2 from the axial-vector mesons exchanges within the nonlocal quark model
... The light-by-light contributions to the anomalous magnetic moment of muon of the dy- namical quark loop, i.e. contact type, and of the light pseudoscalar and scalar resonances exchanges within the nonlocal chiral ... See full document
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Hadronic light-by-light scattering in the muon g − 2
... close to the original value and compatible with the estimate in Eq. (6). The question is, how much is not yet included in the truncated dispersive approach compared to the complete two-pion contribution. Another approach ... See full document
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Hadronic light-by-light scattering contribution to the muon g – 2 on the lattice
... the muon has served for many years as a precision test of the Standard Model [1–4] and it has also played an important role in many presentations at this ... See full document
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Dispersion relations for hadronic light-by-light scattering and the muon g – 2
... bution might dominate the theory error. In present calculations of the HLbL contribution, systematic errors are di ffi cult, if not impossible, to quantify, due to model dependence. A new strategy is required to provide ... See full document
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Muon g – 2 theory: The hadronic part
... is evaluated using data directly and pQCD for the perturbative region and tail. All mixing effects, as γρ -mixing, ρω -mixing, · · · , as well as the decay branching fractions are dynamically generated by including ... See full document
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Pion mass dependence of the HVP contribution to muon g – 2
... mass. While this is a phenomenological assumption, we note that this assumption is in accordance with the ideas underlying the ETMC and HPQCD tricks, so that those tricks should work well if indeed this assumption is ... See full document
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Perspectives on the hadronic contribution to the muon g − 2
... the sign of the pion-pole contribution, which was found to be wrong in the original publications, as first pointed out in Ref. [47]. In order to describe the QCD dynamics in the crucial region of intermediate energies, ... See full document
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Leading-order hadronic contribution to the electron and muon g − 2
... As we know HVP is dominated by spin 1 resonance physics, therefore we need a low energy e ff ective the- ory which includes ρ, ω, φ mesons. Principles to be im- plemented are the VMD mechanism, the chiral structure ... See full document
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On the Hadronic light-by-light contribution to the muon g – 2
... We thus need to go beyond ChPT since we need high energies and beyond perturbative QCD since we need low energies for the hadronic quantities. The main options are experiment, dispersion relations, lattice QCD and mod- ... See full document
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Theory review of the muon g − 2
... butions are under control. The largest effect comes from loops of charged pions, which is the leading contribution in the chiral expansion. One finds a π μ + π − = −40 × 10 − 11 . However, it is interesting to point out ... See full document
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Dispersion relations for hadronic light-by-light and the muon g − 2
... sible, to quantify, due to model dependence. A new strat- egy is required to provide a solid estimate of the theory uncertainties and reduce them. Lattice QCD is making re- markable progress in this direction, and may ... See full document
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Holographic approach to the light-by-light contribution to the muon (g-2)
... The plan of the paper is as follows. In Sect.2, af- ter a general introduction to HQCD models, we focus on the HQCD model proposed in Ref.[20] and the role the model assigns to the pion and the vector ... See full document
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The muon g-2: retrospective and future
... including heavier vector and axial-vector mesons is the next goal. The contribution of these e ff ects and the model error induced by them are not included in the result (31). Preliminary studies [25, 34] show that ... See full document
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Muon g − 2 and related phenomenology in constrained vector-like extensions of the MSSM
... crucial role in determining the allowed parameter space of such models since this constraint can be satisfied only if specific conditions characterizing the mass spectrum are ... See full document
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Predictions for g-2 of the muon and alpha_QED(M_Z^2)
... these mesons are lighter than the scalar mesons, we expect the sign of the total meson contribution to be negative, in agreement with the quark loop estimate of ... See full document
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Lattice study of finite volume effect in HVP for muon g-2
... next-to-leading order of QCD contribution, mainly light-by-light contribution, is still under discussion about a possible uncertainty due to model dependence [4]. To resolve the issue of so-called muon ... See full document
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A new measurement of the leading hadronic corrections to the muon g-2
... s ∼ 3 GeV appears to be very convenient, as an x interval [0 . 30 , 0 . 98] can be measured varying θ between ∼ 2 ◦ and 28 ◦ . It is also worth remarking that data collected at flavor factories, such as DA Φ NE ... See full document
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Muon g-2 and Hadronic Vacuum Polarization: Recent Developments
... started with two detectors, CMD-3 and SND. An inte- grated luminosity of ∼ 60 fb − 1 was collected by each in 2011 - 2013 in the center-of-mass (c.m.) energy range 320 - 2000 MeV. Figure 5 illustrates accumulation of ... See full document
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Lattice calculation of the hadronic leading order contribution to the muon g − 2
... correlator G(t) must be accurately constrained for t & 3 ...of G(t) receives significant finite- volume corrections for typical lattice sizes, ... See full document
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