Sunday, November 4, 2012

1211.0237 (C. Bernard)

Staggered Chiral Perturbation Theory for Neutral B Mixing    [PDF]

C. Bernard
I describe a calculation of B meson mixing at one-loop in staggered chiral perturbation theory, for the complete set of Standard Model and beyond-the-Standard Model operators. The particular lattice representation of the continuum operators used by the Fermilab Lattice/MILC collaborations (and earlier by the HPQCD collaboration) turns out to be important, and results in the presence of "wrong-spin" operators, whose contributions however vanish in the continuum limit. The relation between staggered and naive fermions also plays a key role.
View original: http://arxiv.org/abs/1211.0237

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