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On isospin breaking in $\tau$ decays for $(g-2)_\mu$ from Lattice QCD · Around

2018

On isospin breaking in $\tau$ decays for $(g-2)_\mu$ from Lattice QCD

Bruno, Mattia, Izubuchi, Taku, Lehner, Christoph et al.

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Hadronic spectral functions of $\tau$ decays have been used in the past to provide an alternative determination of the LO Hadronic Vacuum Polarization relevant for the (g-2) of the muon.

Following recent developments and results in Lattice QCD+QED calculations, we explore the possibility of studying the isospin breaking corrections of $\tau$ spectral functions for this prediction.
We present preliminary results at physical pion mass based on Domain Wall Fermion ensembles generated by the RBC/UKQCD collaboration.

Built on

R. Alemany, M. Davier and A. Hocker, Improved determination of the hadronic contribution to the muon (g-2) and to alpha (M(z)) using new data from hadronic tau decays , Eur. Phys. J. C2 (1998) 123 [ hep-ph/9703220 ]
1998
Earlier work this paper cites.
V. Cirigliano, G. Ecker and H. Neufeld, Isospin violation and the magnetic moment of the muon , Phys. Lett. B513 (2001) 361 [ hep-ph/0104267 ]
2001
Earlier work this paper cites.
V. Cirigliano, G. Ecker and H. Neufeld, Radiative tau decay and the magnetic moment of the muon , JHEP 08 (2002) 002 [ hep-ph/0207310 ]
2002
Earlier work this paper cites.
M. Davier, S. Eidelman, A. Hocker and Z. Zhang, Confronting spectral functions from e+ e- annihilation and tau decays: Consequences for the muon magnetic moment , Eur. Phys. J. C27 (2003) 497 [ hep-ph/0208177 ]
2003
Earlier work this paper cites.

Similar

M. Davier, S. Eidelman, A. Hocker and Z. Zhang, Updated estimate of the muon magnetic moment using revised results from e+ e- annihilation , Eur. Phys. J. C31 (2003) 503 [ hep-ph/0308213 ]
2003
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F. Flores-Baez, A. Flores-Tlalpa, G. Lopez Castro and G. Toledo Sanchez, Long-distance radiative corrections to the di-pion tau lepton decay , Phys. Rev. D74 (2006) 071301 [ hep-ph/0608084 ]
2006
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A. Flores-Tlalpa, F. Flores-Baez, G. Lopez Castro and G. Toledo Sanchez, Model-dependent radiative corrections to tau- —¿ pi- pi0 nu revisited , Nucl. Phys. Proc. Suppl. 169 (2007) 250 [ hep-ph/0611226 ]
2007
Cited alongside, same era.
F. Jegerlehner, The anomalous magnetic moment of the muon , Springer Tracts Mod. Phys. 226 (2008) 1
2008
Cited alongside, same era.
F. Jegerlehner and R. Szafron, ρ 0 − γ \rho^{0}-\gamma mixing in the neutral channel pion form factor F π e F_{\pi}^{e} and its role in comparing e + e − e^{+}e^{-} with τ \tau spectral functions , Eur. Phys. J. C71 (2011) 1632 [ 1101.2872 ]

Then

M. Davier, A. Hoecker, G. Lopez Castro, B. Malaescu, X. H. Mo, G. Toledo Sanchez et al., The Discrepancy Between tau and e+e- Spectral Functions Revisited and the Consequences for the Muon Magnetic Anomaly , Eur. Phys. J. C66 (2010) 127 [ 0906.5443 ]
Original
2010
Later among the works it cites.
D. Bernecker and H. B. Meyer, Vector Correlators in Lattice QCD: Methods and applications , Eur. Phys. J. A47 (2011) 148 [ 1107.4388 ]
Original
2011
Later among the works it cites.
T. Blum, N. Christ, M. Hayakawa, T. Izubuchi, L. Jin, C. Jung et al., Connected and Leading Disconnected Hadronic Light-by-Light Contribution to the Muon Anomalous Magnetic Moment with a Physical Pion Mass , Phys. Rev. Lett. 118 (2017) 022005 [ 1610.04603 ]
Original
2017
Later among the works it cites.
RBC, UKQCD
Original
2018
Closest in time.

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