Axial vector form factors in Ds to phi semileptonic decays from lattice QCD

Donald, G., Davies, C. and Koponen, J. (2011) Axial vector form factors in Ds to phi semileptonic decays from lattice QCD. In: XXIX International Symposium on Lattice Field Theory - Lattice 2011, Squaw Valley, Lake Tahoe, CA, USA, 10-16 July 2011,

Abstract

We calculate axial vector and vector form factors for the semileptonic decay D_s to phi using HISQ valence quarks on MILC ensembles with 2+1 flavours of asqtad sea quarks. Using twisted boundary conditions to tune the quarks' momenta, we compute form factors at q^2 = 0 on coarse lattices. We find V(0)=0.903(67), A_1(0)= 0.603(20), A_2(0)=0.401(80) and A_0(0)=0.686(17), which we compare to experimental data and previous quenched lattice QCD calculations.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: No
• Glasgow Author(s) Enlighten ID: Koponen, Dr Jonna and Davies, Professor Christine and Donald, Dr Gordon
• Authors: Donald, G., Davies, C., and Koponen, J.
• Subjects: Q Science > QC Physics
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Copyright Holders: Copyright © 2011 The Authors
• Publisher Policy: Reproduced under a Creative Commons License

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