Towards a lattice determination of the $B^\ast B π$ coupling

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dc.creatorde Divitiis, G. M.
dc.creatorDel Debbio, L.
dc.creatorDi Pierro, M.
dc.creatorFlynn, J. M.
dc.creatorMichael, C.
dc.creatorPeisa, J.
dc.creatorCollaboration, UKQCD
dc.date1998-07-20
dc.date.accessioned2026-07-07T11:47:19Z
dc.date.available2026-07-07T11:47:19Z
dc.descriptionThe coupling $g_{B^\ast B π}$ is related to the form factor at zero momentum of the axial current between $B^\ast$- and $B$-states. This form factor is evaluated on the lattice using static heavy quarks and light quark propagators determined by a stochastic inversion of the fermionic bilinear. The $\gBBP$ coupling is related to the coupling $g$ between heavy mesons and low-momentum pions in the effective heavy meson chiral lagrangian. The coupling of the effective theory can therefore be computed by numerical simulations. We find the value $g = 0.42(4)(8)$. Besides its theoretical interest, the phenomenological implications of such a determination are discussed.
dc.description20 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/hep-lat/9807032
dc.identifierhttp://arxiv.org/abs/hep-lat/9807032
dc.identifierJHEP9810:010,1998
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/202533
dc.subjectHigh Energy Physics - Lattice
dc.subjectHigh Energy Physics - Phenomenology
dc.titleTowards a lattice determination of the $B^\ast B π$ coupling
dc.typetext

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