B-physics from lattice QCD...with a twist

We present a precise lattice QCD determination of the b-quark mass, of the B and Bs decay constants and first results for the B-meson bag parameters. For our computation we employ the so-called ratio method and our results benefit from the use of improved interpolating operators for the B-mesons. QC...

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Detalles Bibliográficos
Autores principales: Carrasco, N., Dimopoulos, P., Frezzotti, R., Gimenez, V., Herdoiza, G., Lubicz, V., Martinelli, G., Michael, C., Palao, D., Rossi, G.C., Sanfilippo, F., Shindler, A., Simula, S., Tarantino, C.
Lenguaje:eng
Publicado: 2012
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.22323/1.174.0428
http://cds.cern.ch/record/1497446
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author Carrasco, N.
Dimopoulos, P.
Frezzotti, R.
Gimenez, V.
Herdoiza, G.
Lubicz, V.
Martinelli, G.
Michael, C.
Palao, D.
Rossi, G.C.
Sanfilippo, F.
Shindler, A.
Simula, S.
Tarantino, C.
author_facet Carrasco, N.
Dimopoulos, P.
Frezzotti, R.
Gimenez, V.
Herdoiza, G.
Lubicz, V.
Martinelli, G.
Michael, C.
Palao, D.
Rossi, G.C.
Sanfilippo, F.
Shindler, A.
Simula, S.
Tarantino, C.
author_sort Carrasco, N.
collection CERN
description We present a precise lattice QCD determination of the b-quark mass, of the B and Bs decay constants and first results for the B-meson bag parameters. For our computation we employ the so-called ratio method and our results benefit from the use of improved interpolating operators for the B-mesons. QCD calculations are performed with Nf = 2 dynamical light-quarks at four values of the lattice spacing and the results are extrapolated to the continuum limit. The preliminary results are mb(mb) = 4.35(12) GeV for the MSbar b-quark mass, fBs = 234(6) MeV and fB = 197(10) MeV for the B-meson decay constants, BBs(mb) = 0.90(5) and BB(mb) = 0.87(5) for the B-meson bag parameters.
id cern-1497446
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2012
record_format invenio
spelling cern-14974462023-03-14T17:52:12Zdoi:10.22323/1.174.0428http://cds.cern.ch/record/1497446engCarrasco, N.Dimopoulos, P.Frezzotti, R.Gimenez, V.Herdoiza, G.Lubicz, V.Martinelli, G.Michael, C.Palao, D.Rossi, G.C.Sanfilippo, F.Shindler, A.Simula, S.Tarantino, C.B-physics from lattice QCD...with a twistParticle Physics - PhenomenologyWe present a precise lattice QCD determination of the b-quark mass, of the B and Bs decay constants and first results for the B-meson bag parameters. For our computation we employ the so-called ratio method and our results benefit from the use of improved interpolating operators for the B-mesons. QCD calculations are performed with Nf = 2 dynamical light-quarks at four values of the lattice spacing and the results are extrapolated to the continuum limit. The preliminary results are mb(mb) = 4.35(12) GeV for the MSbar b-quark mass, fBs = 234(6) MeV and fB = 197(10) MeV for the B-meson decay constants, BBs(mb) = 0.90(5) and BB(mb) = 0.87(5) for the B-meson bag parameters.We present a precise lattice QCD determination of the b-quark mass, of the B and Bs decay constants and first results for the B-meson bag parameters. For our computation we employ the so-called ratio method and our results benefit from the use of improved interpolating operators for the B-mesons. QCD calculations are performed with Nf = 2 dynamical light-quarks at four values of the lattice spacing and the results are extrapolated to the continuum limit. The preliminary results are mb(mb) = 4.35(12) GeV for the MSbar b-quark mass, fBs = 234(6) MeV and fB = 197(10) MeV for the B-meson decay constants, BBs(mb) = 0.90(5) and BB(mb) = 0.87(5) for the B-meson bag parameters.arXiv:1212.0301IFIC-12-80FTUAM-12-113IFT-UAM-CSIC-12-111RM3-TH-12-20LTH966CERN-PH-TH-2012-328IFIC-12-80FTUAM-12-113IFT-UAM-CSIC-12-111RM3-TH-12-20LTH966CERN-PH-TH-2012-328oai:cds.cern.ch:14974462012-12-04
spellingShingle Particle Physics - Phenomenology
Carrasco, N.
Dimopoulos, P.
Frezzotti, R.
Gimenez, V.
Herdoiza, G.
Lubicz, V.
Martinelli, G.
Michael, C.
Palao, D.
Rossi, G.C.
Sanfilippo, F.
Shindler, A.
Simula, S.
Tarantino, C.
B-physics from lattice QCD...with a twist
title B-physics from lattice QCD...with a twist
title_full B-physics from lattice QCD...with a twist
title_fullStr B-physics from lattice QCD...with a twist
title_full_unstemmed B-physics from lattice QCD...with a twist
title_short B-physics from lattice QCD...with a twist
title_sort b-physics from lattice qcd...with a twist
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.22323/1.174.0428
http://cds.cern.ch/record/1497446
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