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Paper detail

B -> D* l nu at zero recoil: an update

We present an update of our calculation of the form factor for B -> D* l nu 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.

preprint2010arXivOpen access
Jon A. BaileyA. BazavovC. BernardC. M. BouchardC. DeTarA. X. El-KhadraE. D. FreelandE. GámizSteven GottliebU. M. HellerJ. E. HetrickA. S. KronfeldJ. LaihoL. LevkovaP. B. MackenzieM. B. OktayJ. N. SimoneR. SugarD. ToussaintR. S. van de Water
hep-phhep-lat
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Jon A. BaileyA. BazavovC. BernardC. M. BouchardC. DeTarA. X. El-KhadraE. D. FreelandE. GámizSteven GottliebU. M. HellerJ. E. HetrickA. S. KronfeldJ. LaihoL. LevkovaP. B. MackenzieM. B. OktayJ. N. SimoneR. SugarD. ToussaintR. S. van de Water

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