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SUMMARY:Numerical investigation of finite-volume effects for the HVP
DTSTART;VALUE=DATE-TIME:20170622T155000Z
DTEND;VALUE=DATE-TIME:20170622T161000Z
DTSTAMP;VALUE=DATE-TIME:20200225T073949Z
UID:indico-contribution-281@cern.ch
DESCRIPTION:Speakers: Mr. HARRISON\, James (University of Southampton)\nIt
is important to correct for finite-volume (FV) effects in the presence of
QED\, since these effects are typically large due to the long range of th
e electromagnetic interaction. We recently made the first lattice calculat
ion of electromagnetic corrections to the hadronic vacuum polarisation (HV
P). For the HVP\, an analytical derivation of FV corrections involves a tw
o-loop calculation which has not yet been carried out. We instead calculat
e the universal FV corrections numerically\, using lattice scalar QED as a
n effective theory. We show that this method gives agreement with known an
alytical results for scalar mass FV effects\, before applying it to calcul
ate FV corrections for the HVP. This method for numerical calculation of F
V effects is also widely applicable to quantities beyond the HVP.\n\nhttps
://makondo.ugr.es/event/0/session/95/contribution/281
LOCATION: AndalucĂa III
URL:https://makondo.ugr.es/event/0/session/95/contribution/281
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