[PDF] Top 20 On the Hadronic light-by-light contribution to the muon g – 2
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On the Hadronic light-by-light contribution to the muon g – 2
... ference. The reason for the large numerical di ff erence is indeed the short distance behaviour. The low momentum behaviour is very close but the negative contribution above 1 GeV, clearly visible in Fig. 5, is ... See full document
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Exploratory studies for the position-space approach to hadronic light-by-light scattering in the muon g - 2
... the muon g − 2 between experiment and theory demands further theory investigations in view of the upcoming new ...the hadronic light-by-light scattering contribution ... See full document
7
On the precision of a data-driven estimate of the pseudoscalar-pole contribution to hadronic light-by-light scattering in the muon g−2
... the muon g − 2 leads to a two-loop integral involving the propagators of the muon, the photons, the pion, the prod- uct of two transition form factors and some kinematical functions ...the ... See full document
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Hadronic light-by-light contribution to (g - 2)μ: a dispersive approach
... HVP contribution, these steps are usually performed without even mentioning them, because they are almost ...from 2 to 138 (136 in 4 dimensions, see ... See full document
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The hadronic light-by-light contribution to the muon anomalous magnetic moment and renormalization group for EFT
... two facts. The dependence of any observable on the subtraction scale µ vanishes, µ dF/dµ = 0 and ultraviolet divergences in QFT are local. In renormalizable QFT leading logarithms can be described by a running coupling. ... See full document
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Hadronic light-by-light contribution to aμ: extended Nambu-Jona-Lasinio, chiral quark models and chiral Lagrangians
... The single photon vertex is in all determinations used as including the pion form-factor. For this one can use ei- ther the VMD expression or a more model/experimental inspired version. For the ππγ ∗ γ ∗ vertex there ... See full document
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Holographic approach to the light-by-light contribution to the muon (g-2)
... perturbative hadronic physics. This is particularly true for the hadronic contribution to the light-by-light (HLbL) scattering Feyn- man diagram of ... See full document
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Dispersion relations for hadronic light-by-light and the muon g − 2
... gram [2], but at the same time the required precision of the HVP has increased, especially in view of the anticipated improved experimental measurement of (g − 2) µ . Thus a proper treatment of ... See full document
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Hadronic light-by-light scattering in the muon g − 2
... − 2 GeV, ...with hadronic resonances) at low momenta and of perturbative QCD at high momenta is not so ...only hadronic models have been used to estimate the full HLbL ... See full document
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Hadronic light-by-light scattering contribution to the muon g – 2 on the lattice
... On the other hand, the HLbL contribution to the muon g − 2, see Fig. 1, has only been calculated using models so far [1, 4, 10] and the frequently used estimates from Refs. [1, 11, 12] ... See full document
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Dispersion relations for hadronic light-by-light scattering and the muon g – 2
... Within our dispersive formalism, the definitions of both the pion-pole and pion-box topologies are unambiguous. By constructing a Mandelstam representation for the scalar functions, we prove that the box topologies ... See full document
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Pseudoscalar pole contribution to the hadronic light-by-light piece of aμ
... a factor 4, namely E34 at J-PARC [4] and muon g-2 at Fermilab [5]. If one is to assume the Standard Model (SM) is all that is needed to understand this difference, then there is something about the ... See full document
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Higher order hadronic and leptonic contributions to the muon g − 2
... Currently a new experiment is built at FERMILAB with the aim to increase the accuracy of the measured value by about a factor four [3, 4]. In the upcoming years also improvements on the theory side can be expected. On ... See full document
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Muon g – 2 theory: The hadronic part
... In view of the upcoming two complementary experiments, one at Fermilab working with ultra hot muons and the other at J-PARC operating with ultra cold muons (very different radiation effects), the big challenge is to keep ... See full document
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e+e− hadronic cross section and the muon g − 2
... (LO) hadronic vacuum polarization (see Feynman diagram in Figure 1), some higher order vacuum polarization (photon and hadronic loops in the photon propagator), and a light-by-light ... 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 contribution from the axial-vector (AV) mesons exchanges to the muon anomalous magnetic moment is estimated in the frame- work of the nonlocal chiral quark ...− 2) µ ... See full document
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Lattice calculation of the hadronic leading order contribution to the muon g − 2
... the hadronic vacuum polarisation and hadronic light-by-light scattering contri- ...the muon (g − 2) will also be dis- cussed in a White Paper which is currently in ... See full document
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Leading-order hadronic contribution to the electron and muon g − 2
... (a) Hadronic Vac- uum Polarization (HVP) of order O(α 2 ), O(α 3 ), O(α 4 ); (b) Hadronic Light-by-Light (HLbL) scattering at O(α 3 ); (c) hadronic e ff ects at O (α G F m ... See full document
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Dispersion relation for hadronic light-by-light scattering
... from hadronic vacuum polarisation, which, how- ever, forthcoming data from e + e − experiments [2] may help ...1 hadronic light-by-light contribution might dominate the theory ... 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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