B, Bs, K and π weak matrix elements with physical light quarks

R. J. Dowdall; C. T.H. Davies; R. R. Horgan; G. P. Lepage; C. Mcneile; C. J. Monahan; J. Shigemitsu

B, B_s, K and π weak matrix elements with physical light quarks

R. J. Dowdall, C. T.H. Davies, R. R. Horgan, G. P. Lepage, C. Mcneile, C. J. Monahan, J. Shigemitsu

School of Engineering, Computing and Mathematics

Research output: Contribution to journal › Conference proceedings published in a journal › peer-review

Abstract

Calculations of pseudoscalar decay constants of B, Bs, K and p mesons with physical light quarks are presented. We use HISQ ensembles that include u;d; s and c sea quarks at three lattice spacings. HISQ is used for the valence light quarks and a radiatively improved NRQCD action for the heavy quarks. The key results are f_B+ =0:184(4) GeV, f_Bs =0:224(4) GeV, f_Bs= f_B+ =1:217(8), f_K+= f_π+ = 1:1916(21), f_K+ = 155:37(34) MeV, giving a significant improvement over previous results that required chiral extrapolation. We also calculate the Wilson flow scale w0, finding w0 = 0:1715(9) fm. 31st.

Original language	English
Article number	406
Journal	Proceedings of Science
Volume	29-July-2013
Publication status	Published - 2013
Event	31st International Symposium on Lattice Field Theory, LATTICE 2013 - Mainz, Germany Duration: 29 Jul 2013 → 3 Aug 2013

ASJC Scopus subject areas

Multidisciplinary

Cite this

@article{9dceccd5b5b842aeae390fc1abaa3f29,

title = "B, Bs, K and π weak matrix elements with physical light quarks",

abstract = "Calculations of pseudoscalar decay constants of B, Bs, K and p mesons with physical light quarks are presented. We use HISQ ensembles that include u;d; s and c sea quarks at three lattice spacings. HISQ is used for the valence light quarks and a radiatively improved NRQCD action for the heavy quarks. The key results are fB+ =0:184(4) GeV, fBs =0:224(4) GeV, fBs= fB+ =1:217(8), fK+= fπ+ = 1:1916(21), fK+ = 155:37(34) MeV, giving a significant improvement over previous results that required chiral extrapolation. We also calculate the Wilson flow scale w0, finding w0 = 0:1715(9) fm. 31st.",

author = "Dowdall, {R. J.} and Davies, {C. T.H.} and Horgan, {R. R.} and Lepage, {G. P.} and C. Mcneile and Monahan, {C. J.} and J. Shigemitsu",

year = "2013",

language = "English",

volume = "29-July-2013",

journal = "Proceedings of Science",

issn = "1824-8039",

publisher = "Sissa Medialab Srl",

note = "31st International Symposium on Lattice Field Theory, LATTICE 2013 ; Conference date: 29-07-2013 Through 03-08-2013",

}

TY - JOUR

T1 - B, Bs, K and π weak matrix elements with physical light quarks

AU - Dowdall, R. J.

AU - Davies, C. T.H.

AU - Horgan, R. R.

AU - Lepage, G. P.

AU - Mcneile, C.

AU - Monahan, C. J.

AU - Shigemitsu, J.

PY - 2013

Y1 - 2013

N2 - Calculations of pseudoscalar decay constants of B, Bs, K and p mesons with physical light quarks are presented. We use HISQ ensembles that include u;d; s and c sea quarks at three lattice spacings. HISQ is used for the valence light quarks and a radiatively improved NRQCD action for the heavy quarks. The key results are fB+ =0:184(4) GeV, fBs =0:224(4) GeV, fBs= fB+ =1:217(8), fK+= fπ+ = 1:1916(21), fK+ = 155:37(34) MeV, giving a significant improvement over previous results that required chiral extrapolation. We also calculate the Wilson flow scale w0, finding w0 = 0:1715(9) fm. 31st.

AB - Calculations of pseudoscalar decay constants of B, Bs, K and p mesons with physical light quarks are presented. We use HISQ ensembles that include u;d; s and c sea quarks at three lattice spacings. HISQ is used for the valence light quarks and a radiatively improved NRQCD action for the heavy quarks. The key results are fB+ =0:184(4) GeV, fBs =0:224(4) GeV, fBs= fB+ =1:217(8), fK+= fπ+ = 1:1916(21), fK+ = 155:37(34) MeV, giving a significant improvement over previous results that required chiral extrapolation. We also calculate the Wilson flow scale w0, finding w0 = 0:1715(9) fm. 31st.

UR - http://www.scopus.com/inward/record.url?scp=84976328571&partnerID=8YFLogxK

M3 - Conference proceedings published in a journal

AN - SCOPUS:84976328571

SN - 1824-8039

VL - 29-July-2013

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 406

T2 - 31st International Symposium on Lattice Field Theory, LATTICE 2013

Y2 - 29 July 2013 through 3 August 2013

ER -

B, Bs, K and π weak matrix elements with physical light quarks

Abstract

ASJC Scopus subject areas

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B, B_s, K and π weak matrix elements with physical light quarks