The Ds, D+, Bs and B decay constants from 2+1 flavor lattice QCD

A. Bazavov; C. Bernard; C. Bouchard; C. Detar; D. Du; A. X. El-Khadra; J. Foley; E. D. Freeland; E. Gámiz; Steven Gottlieb; U. M. Heller; J. Kim; J. Komijani; A. S. Kronfeld; J. Laiho; L. Levkova; P. B. Mackenzie; D. Mohler; E. T. Neil; M. B. Oktayd; S. Qiu; J. N. Simone; R. L. Sugar; D. Toussaint; R. S. Van De Water; R. Zhou

The Ds, D+, Bs and B decay constants from 2+1 flavor lattice QCD

A. Bazavov, C. Bernard, C. Bouchard, C. Detar, D. Du, A. X. El-Khadra, J. Foley, E. D. Freeland, E. Gámiz, Steven Gottlieb, U. M. Heller, J. Kim, J. Komijani, A. S. Kronfeld, J. Laiho, L. Levkova, P. B. Mackenzie, D. Mohler, E. T. Neil, M. B. OktaydS. Qiu, J. N. Simone, R. L. Sugar, D. Toussaint, R. S. Van De Water, R. Zhou

Physics

Research output: Contribution to journal › Conference article › peer-review

Abstract

We present a study of the D and B leptonic decay constants on the MILC N_f = 2+1 asqtad gauge ensembles using asqtad-improved staggered light quarks and clover heavy quarks in the Fermilab interpretation. Our previous analysis [1] computed the decay constants at lattice spacings a 0:14;0:11 and 0:083fm. We have extended the simulations to finer a 0:058 and 0:043fm lattice spacings, and have also increased statistics; this allows us to address many important sources of uncertainty. Technical advances include a two-step two-point fit procedure, better tuning of the heavy quark masses and a better determination of the axial-vector current matching. The present analysis remains blinded, so here we focus on the improvements and their predicted impact on the error budget compared to the prior analysis.

Original language	English (US)
Article number	394
Journal	Proceedings of Science
Volume	29-July-2013
State	Published - 2013
Event	31st International Symposium on Lattice Field Theory, LATTICE 2013 - Mainz, Germany Duration: Jul 29 2013 → Aug 3 2013

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Bazavov, A., Bernard, C., Bouchard, C., Detar, C., Du, D., El-Khadra, A. X., Foley, J., Freeland, E. D., Gámiz, E., Gottlieb, S., Heller, U. M., Kim, J., Komijani, J., Kronfeld, A. S., Laiho, J., Levkova, L., Mackenzie, P. B., Mohler, D., Neil, E. T., ... Zhou, R. (2013). The Ds, D+, Bs and B decay constants from 2+1 flavor lattice QCD. Proceedings of Science, 29-July-2013, Article 394.

Bazavov, A, Bernard, C, Bouchard, C, Detar, C, Du, D, El-Khadra, AX, Foley, J, Freeland, ED, Gámiz, E, Gottlieb, S, Heller, UM, Kim, J, Komijani, J, Kronfeld, AS, Laiho, J, Levkova, L, Mackenzie, PB, Mohler, D, Neil, ET, Oktayd, MB, Qiu, S, Simone, JN, Sugar, RL, Toussaint, D, Van De Water, RS & Zhou, R 2013, 'The Ds, D+, Bs and B decay constants from 2+1 flavor lattice QCD', Proceedings of Science, vol. 29-July-2013, 394.

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abstract = "We present a study of the D and B leptonic decay constants on the MILC Nf = 2+1 asqtad gauge ensembles using asqtad-improved staggered light quarks and clover heavy quarks in the Fermilab interpretation. Our previous analysis [1] computed the decay constants at lattice spacings a 0:14;0:11 and 0:083fm. We have extended the simulations to finer a 0:058 and 0:043fm lattice spacings, and have also increased statistics; this allows us to address many important sources of uncertainty. Technical advances include a two-step two-point fit procedure, better tuning of the heavy quark masses and a better determination of the axial-vector current matching. The present analysis remains blinded, so here we focus on the improvements and their predicted impact on the error budget compared to the prior analysis.",

author = "A. Bazavov and C. Bernard and C. Bouchard and C. Detar and D. Du and El-Khadra, {A. X.} and J. Foley and Freeland, {E. D.} and E. G{\'a}miz and Steven Gottlieb and Heller, {U. M.} and J. Kim and J. Komijani and Kronfeld, {A. S.} and J. Laiho and L. Levkova and Mackenzie, {P. B.} and D. Mohler and Neil, {E. T.} and Oktayd, {M. B.} and S. Qiu and Simone, {J. N.} and Sugar, {R. L.} and D. Toussaint and {Van De Water}, {R. S.} and R. Zhou",

year = "2013",

language = "English (US)",

volume = "29-July-2013",

journal = "Proceedings of Science",

issn = "1824-8039",

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

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TY - JOUR

T1 - The Ds, D+, Bs and B decay constants from 2+1 flavor lattice QCD

AU - Bazavov, A.

AU - Bernard, C.

AU - Bouchard, C.

AU - Detar, C.

AU - Du, D.

AU - El-Khadra, A. X.

AU - Foley, J.

AU - Freeland, E. D.

AU - Gámiz, E.

AU - Gottlieb, Steven

AU - Heller, U. M.

AU - Kim, J.

AU - Komijani, J.

AU - Kronfeld, A. S.

AU - Laiho, J.

AU - Levkova, L.

AU - Mackenzie, P. B.

AU - Mohler, D.

AU - Neil, E. T.

AU - Oktayd, M. B.

AU - Qiu, S.

AU - Simone, J. N.

AU - Sugar, R. L.

AU - Toussaint, D.

AU - Van De Water, R. S.

AU - Zhou, R.

PY - 2013

Y1 - 2013

N2 - We present a study of the D and B leptonic decay constants on the MILC Nf = 2+1 asqtad gauge ensembles using asqtad-improved staggered light quarks and clover heavy quarks in the Fermilab interpretation. Our previous analysis [1] computed the decay constants at lattice spacings a 0:14;0:11 and 0:083fm. We have extended the simulations to finer a 0:058 and 0:043fm lattice spacings, and have also increased statistics; this allows us to address many important sources of uncertainty. Technical advances include a two-step two-point fit procedure, better tuning of the heavy quark masses and a better determination of the axial-vector current matching. The present analysis remains blinded, so here we focus on the improvements and their predicted impact on the error budget compared to the prior analysis.

AB - We present a study of the D and B leptonic decay constants on the MILC Nf = 2+1 asqtad gauge ensembles using asqtad-improved staggered light quarks and clover heavy quarks in the Fermilab interpretation. Our previous analysis [1] computed the decay constants at lattice spacings a 0:14;0:11 and 0:083fm. We have extended the simulations to finer a 0:058 and 0:043fm lattice spacings, and have also increased statistics; this allows us to address many important sources of uncertainty. Technical advances include a two-step two-point fit procedure, better tuning of the heavy quark masses and a better determination of the axial-vector current matching. The present analysis remains blinded, so here we focus on the improvements and their predicted impact on the error budget compared to the prior analysis.

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M3 - Conference article

AN - SCOPUS:84976295589

SN - 1824-8039

VL - 29-July-2013

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 394

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

Y2 - 29 July 2013 through 3 August 2013

ER -

The Ds, D+, Bs and B decay constants from 2+1 flavor lattice QCD

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