HQET with chiral symmetry on the lattice

Details HQET with chiral symmetry on the lattice HQET with chiral symmetry on the lattice

2003-09-18

arxiv.org/abs/hep-lat/0309131v1

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, Lattice 2003 (improve)

Scientific paper

10.1016/S0920-5632(03)02606-9

We show that by combining the static heavy quark action with the Neuberger action for the light quark, the renormalisation of the heavy-light bilinear and four-quark operators, computed on the lattice, becomes highly simplified: all the heavy-light bilinears get renormalised by a single multiplicative constant, whereas the renormalisation of the complete set of parity even dB=2 four-quark operators involves only four independent constants. The relevant (matching) constants are computed at NLO in perturbation theory and are presented here.

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