24-30 July 2016
Highfield Campus, University of Southampton
Europe/London timezone

Non-perturbative matching of HQET heavy-light axial and vector currents in N_f=2 lattice QCD

27 Jul 2016, 09:00
20m
Building 67 Room 1027 (Highfield Campus, Universit of Southampton)

Building 67 Room 1027

Highfield Campus, Universit of Southampton

Talk Standard Model Parameters and Renormalization Standard Model Parameters and Renormalization

Speaker

Dr Jochen Heitger (University of Muenster, ITP)

Description

Based on a non-perturbative matching strategy between Heavy Quark Effective Theory (HQET) at O(1/m) and finite-volume QCD, we report on our determination of the effective theory parameters of all components of the HQET heavy-light axial and vector currents in two-flavour lattice QCD. These parameters, which can be fixed by matching conditions between suitable QCD and HQET observables evaluated through numerical simulations, are required to absorb the power divergences of lattice HQET, as, for instance, encountered in an effective theory computation of form factors for semi-leptonic decays of B- and B_s-mesons.

Primary author

Dr Jochen Heitger (University of Muenster, ITP)

Co-authors

Christian Wittemeier (University of Muenster) Dr Hubert Simma (NIC, DESY Zeuthen) Dr Michele Della Morte (University of Southern Denmark) Dr Piotr Korcyl (University of Regensburg)

Presentation Materials

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