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HLbL in muon g-2 at large loop momenta
by Johan Bijnens, Nils Hermansson-Truedsson and Antonio Rodríguez-Sánchez
Submission summary
| Authors (as registered SciPost users): | Antonio Rodriguez Sanchez |
| Submission information | |
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| Preprint Link: | scipost_202112_00039v1 (pdf) |
| Date submitted: | 2021-12-17 18:49 |
| Submitted by: | Rodriguez Sanchez, Antonio |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 16th International Workshop on Tau Lepton Physics (TAU2021) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Phenomenological |
Abstract
We study the HLbL contribution to g-2 in the kinematic region where the three loop momenta are large. We show how, even when the fourth photon is in the static limit, the massless quark loop gives the leading term of an operator product expansion. Power corrections are found to be small. Gluonic corrections are also included and the expansion is found to be well-behaved at relatively low-energies, which can be used to reduce uncertainties in the HLbL contribution to g-2.
Current status:
In refereeing