We present an update of our calculation of the form factor for B¯ →D∗lν¯ at zero recoil, with higher statistics and finer lattices. As before, we use the Fermilab action for b and c quarks, the asqtad staggered action for light valence quarks, and the MILC ensembles for gluons and light quarks (Lüscher-Weisz married to 2+1 rooted staggered sea quarks). In this update, we have reduced the total uncertainty on F(1) from 2.6% to 1.7%. At Lattice2010 we presented a still-blinded result, but this writeup includes the unblinded result from the September 2010 CKM workshop.
|Journal||Proceedings of Science|
|Publication status||Published - 2010|
|Event||28th International Symposium on Lattice Field Theory, Lattice 2010 - Villasimius, Sardinia, Italy|
Duration: 2010 Jun 14 → 2010 Jun 19
Bibliographical noteFunding Information:
∗Speaker. †Operated by Fermi Research Alliance, LLC, under Contract No. DE-AC02-07CH11359 with the United States Department of Energy. ‡Operated by Brookhaven Science Associates, LLC, under Contract No. DE-AC02-98CH10886 with the United States Department of Energy.
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