| dc.contributor.author | RYAN, SINEAD | en |
| dc.contributor.author | PEARDON, MICHAEL | en |
| dc.date.accessioned | 2017-01-12T14:40:06Z | |
| dc.date.available | 2017-01-12T14:40:06Z | |
| dc.date.issued | 2016 | en |
| dc.date.submitted | 2016 | en |
| dc.identifier.citation | Chakraborty B, Davies C.T.H, Koponen J, Lepage G.P, Peardon M.J, Ryan S.M, Estimate of the hadronic vacuum polarization disconnected contribution to the anomalous magnetic moment of the muon from lattice QCD, Physical Review D - Particles, Fields, Gravitation and Cosmology, 93, 7, 2016, 074509 | en |
| dc.identifier.other | Y | en |
| dc.description | PUBLISHED | en |
| dc.description | Cited By :3 Export Date: 6 January 2017 | en |
| dc.description.abstract | The quark-line disconnected diagram is a potentially important ingredient in lattice QCD calculations of
the hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon. It is also a
notoriously difficult one to evaluate. Here, for the first time, we give an estimate of this contribution based
on lattice QCD results that have a statistically significant signal, albeit at one value of the lattice spacing and
an unphysically heavy value of the
u=d
quark mass. We use HPQCD
’
s method of determining the
anomalous magnetic moment by reconstructing the Adler function from time moments of the current-
current correlator at zero spatial momentum. Our results lead to a total (including
u
,
d
and
s
quarks) quark-
line disconnected contribution to
a
μ
of
−
0
.
15%
of the
u=d
hadronic vacuum polarization contribution with
an uncertainty which is 1% of that contribution. | en |
| dc.description.sponsorship | We are grateful to the Hadron Spectrum collaboration for
the correlators used here and to C. Bernard for useful
discussions. Chroma
[28]
and QUDA
[29,30]
were used on
clusters at Jefferson Laboratory under the USQCD
Initiative and the LQCD ARRA project. Gauge configu-
rations were generated using resources awarded from the
U.S. Department of Energy INCITE program at Oak Ridge
National Lab, the NSF Teragrid at the Texas Advanced
Computer Center and the Pittsburgh Supercomputer Center
as well as at Jefferson Lab. Calculations were also done
on the Darwin Supercomputer as part of STFC
’
sDiRAC
facility jointly funded by STFC, BIS and the Universities of
Cambridge and Glasgow. This work was funded by the
Gilmour bequest to the University of Glasgow, Science
Foundation Ireland (Grant No. 11-RFP.1-PHY-3201), the
Science and Technology Facilities Council (Grant No. ST/
L000466/1), the Royal Society, the Wolfson Foundation and
the National Science Foundation | en |
| dc.format.extent | 074509 | en |
| dc.relation.ispartofseries | Physical Review D - Particles, Fields, Gravitation and Cosmology | en |
| dc.relation.ispartofseries | 93 | en |
| dc.relation.ispartofseries | 7 | en |
| dc.rights | Y | en |
| dc.subject | quark-line disconnected diagram | en |
| dc.subject.lcsh | quark-line disconnected diagram | en |
| dc.title | Estimate of the hadronic vacuum polarization disconnected contribution to the anomalous magnetic moment of the muon from lattice QCD | en |
| dc.type | Journal Article | en |
| dc.type.supercollection | scholarly_publications | en |
| dc.type.supercollection | refereed_publications | en |
| dc.identifier.peoplefinderurl | http://people.tcd.ie/ryansin | en |
| dc.identifier.peoplefinderurl | http://people.tcd.ie/peardonm | en |
| dc.identifier.rssinternalid | 141202 | en |
| dc.identifier.doi | http://dx.doi.org/10.1103/PhysRevD.93.074509 | en |
| dc.rights.ecaccessrights | openAccess | |
| dc.identifier.rssuri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84964584186&doi=10.1103%2fPhysRevD.93.074509&partnerID=40&md5=5f83fe31517e2302eacbb357a54a5231 | en |
| dc.contributor.sponsor | Science Foundation Ireland (SFI) | en |
| dc.contributor.sponsorGrantNumber | 1-RFP.1-PHY-3201 | en |
| dc.identifier.uri | http://hdl.handle.net/2262/78711 | |
