Extraction of the bare form factors for the semi-leptonic Bs decays
Extraction of the bare form factors for the semi-leptonic Bs decays
The computation of the form factors for the Bs→Kℓν
decay is presented. The b quark is treated by means of Heavy Quark Effective Theory, currently in the static approximation. In these proceedings we discuss the extraction of the bare matrix elements from lattice data through a combined fit to two- and three-point correlation functions, as well as by considering suitable ratios. The different methods agree concerning the extracted form factors and approximately 2% accuracy is reached. The non-perturbative renormalization and matching to QCD is described in accompanying proceedings [PoS(LATTICE2016) 292].
Bahr, Felix
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Banerjee, Debasish
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Koren, M.
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Simma, H.
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Sommer, Rainer
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24 March 2017
Bahr, Felix
7a47aa16-e612-49a6-84e5-05af56172442
Banerjee, Debasish
dcc5d706-d0ed-40b7-94f6-a4ddd7d41646
Koren, M.
84f8ee4e-3aaf-4fd1-aed0-6c9e53f49dab
Simma, H.
1081030b-d555-4860-8fc8-c97c1979e2fb
Sommer, Rainer
1b793a87-4321-4602-b30c-d5157c4d02a2
Bahr, Felix, Banerjee, Debasish, Koren, M., Simma, H. and Sommer, Rainer
(2017)
Extraction of the bare form factors for the semi-leptonic Bs decays.
In Proceedings of Science.
(doi:10.22323/1.256.0295).
Record type:
Conference or Workshop Item
(Paper)
Abstract
The computation of the form factors for the Bs→Kℓν
decay is presented. The b quark is treated by means of Heavy Quark Effective Theory, currently in the static approximation. In these proceedings we discuss the extraction of the bare matrix elements from lattice data through a combined fit to two- and three-point correlation functions, as well as by considering suitable ratios. The different methods agree concerning the extracted form factors and approximately 2% accuracy is reached. The non-perturbative renormalization and matching to QCD is described in accompanying proceedings [PoS(LATTICE2016) 292].
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Published date: 24 March 2017
Venue - Dates:
34th annual International Symposium on Lattice Field Theory, University of Southampton, Southampton, United Kingdom, 2016-07-24 - 2016-07-30
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Local EPrints ID: 500753
URI: http://eprints.soton.ac.uk/id/eprint/500753
PURE UUID: f72a7af8-7d3e-49f8-b46c-cd0c06b6e7cc
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Date deposited: 12 May 2025 16:53
Last modified: 13 May 2025 02:12
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Contributors
Author:
Felix Bahr
Author:
Debasish Banerjee
Author:
M. Koren
Author:
H. Simma
Author:
Rainer Sommer
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