A precise determination of the charm quark's mass in quenched QCD

We present a lattice determination of the charm quark's mass, using the mass of the D_s meson as experimental input. All errors are under control with the exception of the quenched approximation. Setting the scale with F_K=160 MeV, our final result for the renormalization group invariant (RGI)...

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Detalles Bibliográficos
Autores principales: Rolf, Juri, Sint, Stefan
Lenguaje:eng
Publicado: 2002
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1088/1126-6708/2002/12/007
http://cds.cern.ch/record/582601
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author Rolf, Juri
Sint, Stefan
author_facet Rolf, Juri
Sint, Stefan
author_sort Rolf, Juri
collection CERN
description We present a lattice determination of the charm quark's mass, using the mass of the D_s meson as experimental input. All errors are under control with the exception of the quenched approximation. Setting the scale with F_K=160 MeV, our final result for the renormalization group invariant (RGI) quark mass is M_c = 1.654(45) GeV, which translates to m_c(m_c) =1.301(34) GeV for the running mass in the MSbar scheme. A 6 percent increase of the RGI quark mass is observed when the scale is set by the nucleon mass. This is a typical quenched scale ambiguity, which is reduced to about 3 percent for m_c(m_c), and to 4 percent for the mass ratio M_c/M_s. In contrast, the mass splitting m(Dstar_s)-m(D_s) changes from 117(11) MeV to 94(11) MeV, which is significantly smaller than the experimental value of 144 MeV.
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spelling cern-5826012019-09-30T06:29:59Zdoi:10.1088/1126-6708/2002/12/007http://cds.cern.ch/record/582601engRolf, JuriSint, StefanA precise determination of the charm quark's mass in quenched QCDParticle Physics - PhenomenologyWe present a lattice determination of the charm quark's mass, using the mass of the D_s meson as experimental input. All errors are under control with the exception of the quenched approximation. Setting the scale with F_K=160 MeV, our final result for the renormalization group invariant (RGI) quark mass is M_c = 1.654(45) GeV, which translates to m_c(m_c) =1.301(34) GeV for the running mass in the MSbar scheme. A 6 percent increase of the RGI quark mass is observed when the scale is set by the nucleon mass. This is a typical quenched scale ambiguity, which is reduced to about 3 percent for m_c(m_c), and to 4 percent for the mass ratio M_c/M_s. In contrast, the mass splitting m(Dstar_s)-m(D_s) changes from 117(11) MeV to 94(11) MeV, which is significantly smaller than the experimental value of 144 MeV.We present a lattice determination of the charm quark's mass, using the mass of the D_s meson as experimental input. All errors are under control with the exception of the quenched approximation. Setting the scale with F_K=160 MeV, our final result for the renormalization group invariant (RGI) quark mass is M_c = 1.654(45) GeV, which translates to m_c(m_c) =1.301(34) GeV for the running mass in the MSbar scheme. A 6 percent increase of the RGI quark mass is observed when the scale is set by the nucleon mass. This is a typical quenched scale ambiguity, which is reduced to about 3 percent for m_c(m_c), and to 4 percent for the mass ratio M_c/M_s. In contrast, the mass splitting m(Dstar_s)-m(D_s) changes from 117(11) MeV to 94(11) MeV, which is significantly smaller than the experimental value of 144 MeV.hep-ph/0209255CERN-TH-2002-244HU-EP-02-40FTUAM-02-22CERN-TH-2002-244FTUAM-2002-22HU-EP-2002-40oai:cds.cern.ch:5826012002-09-23
spellingShingle Particle Physics - Phenomenology
Rolf, Juri
Sint, Stefan
A precise determination of the charm quark's mass in quenched QCD
title A precise determination of the charm quark's mass in quenched QCD
title_full A precise determination of the charm quark's mass in quenched QCD
title_fullStr A precise determination of the charm quark's mass in quenched QCD
title_full_unstemmed A precise determination of the charm quark's mass in quenched QCD
title_short A precise determination of the charm quark's mass in quenched QCD
title_sort precise determination of the charm quark's mass in quenched qcd
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1088/1126-6708/2002/12/007
http://cds.cern.ch/record/582601
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AT sintstefan aprecisedeterminationofthecharmquarksmassinquenchedqcd
AT rolfjuri precisedeterminationofthecharmquarksmassinquenchedqcd
AT sintstefan precisedeterminationofthecharmquarksmassinquenchedqcd

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