Precision $B^*B\pi$ coupling from three-flavor lattice QCD

We consider three-flavor QCD and perform a determination of the low-energy coupling $\hat{g}_\chi$ of SU(2) Heavy Meson Chiral Perturbation Theory. It is the $B^*B\pi$ coupling in the limit of static heavy and chiral light quarks and has not been determined with precision thus far. The calculation i...

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Detalles Bibliográficos
Autores principales: Gérardin, Antoine, Heitger, Jochen, Kuberski, Simon, Simma, Hubert, Sommer, Rainer
Lenguaje:eng
Publicado: 2021
Materias:
hep-lat
Particle Physics - Lattice
Acceso en línea:https://dx.doi.org/10.22323/1.396.0540
http://cds.cern.ch/record/2791307
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author Gérardin, Antoine
Heitger, Jochen
Kuberski, Simon
Simma, Hubert
Sommer, Rainer
author_facet Gérardin, Antoine
Heitger, Jochen
Kuberski, Simon
Simma, Hubert
Sommer, Rainer
author_sort Gérardin, Antoine
collection CERN
description We consider three-flavor QCD and perform a determination of the low-energy coupling $\hat{g}_\chi$ of SU(2) Heavy Meson Chiral Perturbation Theory. It is the $B^*B\pi$ coupling in the limit of static heavy and chiral light quarks and has not been determined with precision thus far. The calculation is performed on a large set of the $2+1$ flavor CLS ensembles with pion masses from 420 MeV down to 130 MeV. This allows us to significantly reduce the systematic uncertainty from the chiral extrapolation compared to previous works. Only a weak dependence on the lattice spacing is visible in our results.
id cern-2791307
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2021
record_format invenio
spelling cern-27913072023-01-31T09:47:59Zdoi:10.22323/1.396.0540http://cds.cern.ch/record/2791307engGérardin, AntoineHeitger, JochenKuberski, SimonSimma, HubertSommer, RainerPrecision $B^*B\pi$ coupling from three-flavor lattice QCDhep-latParticle Physics - LatticeWe consider three-flavor QCD and perform a determination of the low-energy coupling $\hat{g}_\chi$ of SU(2) Heavy Meson Chiral Perturbation Theory. It is the $B^*B\pi$ coupling in the limit of static heavy and chiral light quarks and has not been determined with precision thus far. The calculation is performed on a large set of the $2+1$ flavor CLS ensembles with pion masses from 420 MeV down to 130 MeV. This allows us to significantly reduce the systematic uncertainty from the chiral extrapolation compared to previous works. Only a weak dependence on the lattice spacing is visible in our results.We consider three-flavor QCD and perform a determination of the low-energy coupling $\hat{g}_\chi$ of SU(2) Heavy Meson Chiral Perturbation Theory. It is the $B^*B\pi$ coupling in the limit of static heavy and chiral light quarks and has not been determined with precision thus far. The calculation is performed on a large set of the $2+1$ flavor CLS ensembles with pion masses from 420 MeV down to 130 MeV. This allows us to significantly reduce the systematic uncertainty from the chiral extrapolation compared to previous works. Only a weak dependence on the lattice spacing is visible in our results.arXiv:2111.04693MS-TP-21-31MITP-21-052DESY-21-176oai:cds.cern.ch:27913072021-11-08
spellingShingle hep-lat
Particle Physics - Lattice
Gérardin, Antoine
Heitger, Jochen
Kuberski, Simon
Simma, Hubert
Sommer, Rainer
Precision $B^*B\pi$ coupling from three-flavor lattice QCD
title Precision $B^*B\pi$ coupling from three-flavor lattice QCD
title_full Precision $B^*B\pi$ coupling from three-flavor lattice QCD
title_fullStr Precision $B^*B\pi$ coupling from three-flavor lattice QCD
title_full_unstemmed Precision $B^*B\pi$ coupling from three-flavor lattice QCD
title_short Precision $B^*B\pi$ coupling from three-flavor lattice QCD
title_sort precision $b^*b\pi$ coupling from three-flavor lattice qcd
topic hep-lat
Particle Physics - Lattice
url https://dx.doi.org/10.22323/1.396.0540
http://cds.cern.ch/record/2791307
work_keys_str_mv AT gerardinantoine precisionbbpicouplingfromthreeflavorlatticeqcd
AT heitgerjochen precisionbbpicouplingfromthreeflavorlatticeqcd
AT kuberskisimon precisionbbpicouplingfromthreeflavorlatticeqcd
AT simmahubert precisionbbpicouplingfromthreeflavorlatticeqcd
AT sommerrainer precisionbbpicouplingfromthreeflavorlatticeqcd

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