Yayınlanmış 1 Ocak 2014
| Sürüm v1
Dergi makalesi
Açık
Finite-volume corrections to the CP-odd nucleon matrix elements of the electromagnetic current from the QCD vacuum angle
Oluşturanlar
- 1. Helmholtz-Institut für Strahlen- und Kernphysik, Bethe Center for Theoretical Physics, Universität Bonn, Bonn, D-53115, Germany
- 2. Institute for Advanced Simulation, Institut für Kernphysik, Jülich Center for Hadron Physics, JARA-FAME, JARA-HPC, Forschungszentrum Jülich, Jülich, D-52425, Germany
Açıklama
Nucleon electric dipole moments originating from strong CP-violation are being calculated by several groups using lattice QCD. We revisit the finite volume corrections to the CP-odd nucleon matrix elements of the electromagnetic current, which can be related to the electric dipole moments in the continuum, in the framework of chiral perturbation theory up to next-to-leading order taking into account the breaking of Lorentz symmetry. A chiral extrapolation of the recent lattice results of both the neutron and proton electric dipole moments is performed, which results in dn=(−2.7±1.2)×10−16eθ0 cm and dp=(2.1±1.2)×10−16eθ0 cm .
Dosyalar
j.physletb.2014.07.022.pdf
Dosyalar
(390.8 kB)
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390.8 kB | Ön İzleme İndir |