An exploratory study of heavy-light semileptonic form factors using distillation

Peter Boyle, Felix Erben, Michael Marshall, Fionn Ó hÓgáin, Antonin Portelli, Justus Tobias Tsang

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We present our exploratory study with the aim of simulating heavy-light semileptonic form factors as part of the RBC-UKQCD charm (to bottom) physics programme. We are using a distillation-based setup as a strategy to get optimised plateaus in semileptonic D(s) and B(s) decays, and compare our results to form factors obtained from sequential Z2-Wall propagators. The study is done in a centre-of-mass frame as well as in several moving frames. We use an Nf = 2+1 domain wall fermion ensemble with a pion mass of 340 MeV, with the aim of extending the study to a variety of other domain-wall ensembles, including physical-pion mass ensembles.

TidsskriftProceedings of Science
Antal sider7
StatusUdgivet - aug. 2020
Begivenhed37th International Symposium on Lattice Field Theory, LATTICE 2019 - Wuhan, Kina
Varighed: 16. jun. 201922. jun. 2019


Konference37th International Symposium on Lattice Field Theory, LATTICE 2019

Bibliografisk note

Funding Information:
Acknowledgements The authors thank the members of the RBC and UKQCD Collaborations for helpful discussions and suggestions. This work used the DiRACExtreme Scaling service at the University of Edinburgh, operated by the Edinburgh Parallel Computing Centre on behalf of the STFC DiRAC HPC Facility ( The equipment was funded by BEIS capital funding via STFC grants ST/R00238X/1 and ST/S002537/1 and STFC DiRAC Operations grantST/R001006/1. DiRAC is part of the National e-Infrastructure. F.E. and A.P. are supported in part by UK STFC grant ST/P000630/1. F.E. and A.P. also received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme under grant agreement No 757646 & A.P. additionally by grant agreement 813942. J.T.T. is thankful for support by the Independent Research Fund Denmark, Research Project 1, grant number 8021-00122B. P.B. received support from the Royal Society Wolfson Research Merit award WM/60035.

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