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Progress calculating decay constants with NRQCD and AsgTad actions

✍ Scribed by Matthew Wingate; Christine Davies; Alan Gray; Emel Gulez; G.Peter Lepage; Junko Shigemitsu

Book ID: 104354690
Publisher: Elsevier Science
Year: 2004
Tongue: English
Weight: 255 KB
Volume: 129-130
Category: Article
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(03)02570-2

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✦ Synopsis

We combine a light AsqTad antiquark with a nonrelativistic heavy quark to compute the decay constants of heavy-light pseudoscalar mesons using the ensemble of 3-flavor gauge field configurations generated by the MILC collaboration.

Preliminary results for fsB, and fo, are given and status of the chiral extrapolation to fB is reported. We also touch upon results of the perturbative calculation which matches matrix elements in the effective theory to the full theory at l-loop order.

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