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dc.contributor.authorDetmold, Williamen_US
dc.contributor.authorLin, C. -J. Daviden_US
dc.contributor.authorMeinel, Stefanen_US
dc.date.accessioned2019-04-03T06:36:18Z-
dc.date.available2019-04-03T06:36:18Z-
dc.date.issued2012-06-18en_US
dc.identifier.issn1550-7998en_US
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevD.85.114508en_US
dc.identifier.urihttp://hdl.handle.net/11536/16477-
dc.description.abstractIn a recent letter [Phys. Rev. Lett. 108, 172003 (2012)] we have reported on a lattice QCD calculation of the heavy-hadron axial couplings g(1), g(2), and g(3). These quantities are low-energy constants of heavy-hadron chiral perturbation theory (HH chi PT) and are related to the B*B pi, Sigma(b)*Sigma(b)pi, and Sigma(b)(*)Lambda(b)pi couplings. In the following, we discuss important details of the calculation and give further results. To determine the axial couplings, we explicitly match the matrix elements of the axial current in QCD with the corresponding matrix elements in HH chi PT. We construct the ratios of correlation functions used to calculate the matrix elements in lattice QCD, and study the contributions from excited states. We present the complete numerical results and discuss the data analysis in depth. In particular, we demonstrate the convergence of SU(4 vertical bar 2) HH chi PT for the axial-current matrix elements at pion masses up to about 400 MeV and show the impact of the nonanalytic loop contributions. Finally, we present additional predictions for strong and radiative decay widths of charm and bottom baryons.en_US
dc.language.isoen_USen_US
dc.titleCalculation of the heavy-hadron axial couplings g(1), g(2), and g(3) using lattice QCDen_US
dc.typeArticleen_US
dc.identifier.doi10.1103/PhysRevD.85.114508en_US
dc.identifier.journalPHYSICAL REVIEW Den_US
dc.citation.volume85en_US
dc.citation.issue11en_US
dc.citation.spage0en_US
dc.citation.epage0en_US
dc.contributor.department物理研究所zh_TW
dc.contributor.departmentInstitute of Physicsen_US
dc.identifier.wosnumberWOS:000305559600002en_US
dc.citation.woscount59en_US
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