dc.contributor.author Davies, CTH en dc.contributor.author Hornbostel, K en dc.contributor.author Komijani, J en dc.contributor.author Koponen, J en dc.contributor.author Lepage, GP en dc.contributor.author Lytle, AT en dc.contributor.author McNeile, C en dc.date.accessioned 2019-08-12T14:41:09Z dc.date.issued 2019-08-08 en dc.identifier.uri http://hdl.handle.net/10026.1/14789 dc.description 14 pages, 4 figures en dc.description.abstract We derive the Operator Product Expansion whose vacuum expectation value gives the time-moments of the pseudoscalar heavy-light current-current correlator up to and including terms in $\alpha_s^2$ multiplying $\langle\overline{\psi}\psi\rangle/M^3$ and terms in $\alpha_s$ multiplying $\langle \alpha_s G^2 \rangle/M^4$, where $M$ is the heavy-quark mass. Using lattice QCD results for heavy-strange correlators obtained for a variety of heavy quark masses on gluon field configurations including $u$, $d$ and $s$ quarks in the sea at three values of the lattice spacing, we are able to show that the contribution of the strange-quark condensate to the time-moments is very substantial. We use our lattice QCD time-moments and the OPE to determine a value for the condensate, fitting the 4th, 6th, 8th and 10th time-moments simultaneously. Our result, $\langle \overline{s}s \rangle^{\overline{\text{MS}}}(2 \text{GeV}) = -(296(11) \,\mathrm{MeV})^3$, agrees well with HPQCD's earlier, more direct, lattice QCD determination~\cite{McNeile:2012xh}. As well as confirming that the $s$ quark condensate is close in value to the light quark condensate, this demonstrates clearly the consistency of the Operator Product Expansion for fully nonperturbative calculations of matrix elements of short-distance operators in lattice QCD. en dc.language.iso en en dc.rights Attribution-NonCommercial-NoDerivatives 4.0 International en dc.rights Attribution-NonCommercial-NoDerivatives 4.0 International en dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/ en dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/ en dc.subject hep-lat en dc.subject hep-lat en dc.subject hep-ph en dc.title Determination of the quark condensate from heavy-light current-current correlators in full lattice QCD en dc.type Journal Article plymouth.author-url http://arxiv.org/abs/1811.04305v1 en plymouth.journal Phys.Rev. D100 (2019) 034506 en dc.identifier.doi 10.1103/PhysRevD.100.034506 en plymouth.organisational-group /Plymouth plymouth.organisational-group /Plymouth/00 Groups by role plymouth.organisational-group /Plymouth/00 Groups by role/Academics plymouth.organisational-group /Plymouth/Faculty of Science and Engineering plymouth.organisational-group /Plymouth/Faculty of Science and Engineering/School of Engineering, Computing and Mathematics plymouth.organisational-group /Plymouth/REF 2021 Researchers by UoA plymouth.organisational-group /Plymouth/REF 2021 Researchers by UoA/UoA10 Mathematical Sciences dcterms.dateAccepted 2019-07-02 en dc.rights.embargodate 2019-08-24 en dc.rights.embargoperiod Not known en rioxxterms.version VoR en rioxxterms.versionofrecord 10.1103/PhysRevD.100.034506 en rioxxterms.licenseref.uri http://creativecommons.org/licenses/by-nc-nd/4.0/ en rioxxterms.licenseref.startdate 2019-08-08 en rioxxterms.type Journal Article/Review en
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