Quarck loop effects in semileptonic form factors for heavy-light mesons

C. Bernard; C. DeTar; Steven Gottlieb; E. B. Gregory; U. M. Heller; C. McNeile; J. Osborn; R. L. Sugar; D. Toussaint

doi:10.1016/S0920-5632(04)90009-6

Quarck loop effects in semileptonic form factors for heavy-light mesons

C. Bernard, C. DeTar, Steven Gottlieb, E. B. Gregory, U. M. Heller, C. McNeile, J. Osborn, R. L. Sugar, D. Toussaint

Physics

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

We present preliminary results of a determination of the semileptonic form factor for the decay of pseudoscalar heavy-light mesons to pseudoscalar light-light mesons in full QCD. In this preliminary study we focus on the effects of dynamical quark loops. Accordingly, we compare results of simulations with matched quenched and Asqtad dynamical gauge configurations. The latter include three flavors of light quarks. Our simulation uses clover Wilson valence quarks, treated in the Fermilab formalism. Preliminary results, as yet uncorrected by continuum matching factors, suggest a measurable enhancement in the form factor due to dynamical quark loops over the accessible range of q².

Original language	English (US)
Pages (from-to)	364-365
Number of pages	2
Journal	Nuclear Physics B - Proceedings Supplements
Volume	129-130
DOIs	https://doi.org/10.1016/S0920-5632(04)90009-6
State	Published - Mar 2004

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics

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title = "Quarck loop effects in semileptonic form factors for heavy-light mesons",

abstract = "We present preliminary results of a determination of the semileptonic form factor for the decay of pseudoscalar heavy-light mesons to pseudoscalar light-light mesons in full QCD. In this preliminary study we focus on the effects of dynamical quark loops. Accordingly, we compare results of simulations with matched quenched and Asqtad dynamical gauge configurations. The latter include three flavors of light quarks. Our simulation uses clover Wilson valence quarks, treated in the Fermilab formalism. Preliminary results, as yet uncorrected by continuum matching factors, suggest a measurable enhancement in the form factor due to dynamical quark loops over the accessible range of q2.",

author = "C. Bernard and C. DeTar and Steven Gottlieb and Gregory, {E. B.} and Heller, {U. M.} and C. McNeile and J. Osborn and Sugar, {R. L.} and D. Toussaint",

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doi = "10.1016/S0920-5632(04)90009-6",

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volume = "129-130",

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TY - JOUR

T1 - Quarck loop effects in semileptonic form factors for heavy-light mesons

AU - Bernard, C.

AU - DeTar, C.

AU - Gottlieb, Steven

AU - Gregory, E. B.

AU - Heller, U. M.

AU - McNeile, C.

AU - Osborn, J.

AU - Sugar, R. L.

AU - Toussaint, D.

PY - 2004/3

Y1 - 2004/3

N2 - We present preliminary results of a determination of the semileptonic form factor for the decay of pseudoscalar heavy-light mesons to pseudoscalar light-light mesons in full QCD. In this preliminary study we focus on the effects of dynamical quark loops. Accordingly, we compare results of simulations with matched quenched and Asqtad dynamical gauge configurations. The latter include three flavors of light quarks. Our simulation uses clover Wilson valence quarks, treated in the Fermilab formalism. Preliminary results, as yet uncorrected by continuum matching factors, suggest a measurable enhancement in the form factor due to dynamical quark loops over the accessible range of q2.

AB - We present preliminary results of a determination of the semileptonic form factor for the decay of pseudoscalar heavy-light mesons to pseudoscalar light-light mesons in full QCD. In this preliminary study we focus on the effects of dynamical quark loops. Accordingly, we compare results of simulations with matched quenched and Asqtad dynamical gauge configurations. The latter include three flavors of light quarks. Our simulation uses clover Wilson valence quarks, treated in the Fermilab formalism. Preliminary results, as yet uncorrected by continuum matching factors, suggest a measurable enhancement in the form factor due to dynamical quark loops over the accessible range of q2.

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DO - 10.1016/S0920-5632(04)90009-6

M3 - Article

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VL - 129-130

SP - 364

EP - 365

JO - Nuclear Physics B - Proceedings Supplements

JF - Nuclear Physics B - Proceedings Supplements

ER -

Quarck loop effects in semileptonic form factors for heavy-light mesons

Abstract

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