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Semileptonic D→πℓν, D→Kℓν and Ds→Kℓν decays with 2+1f domain wall fermions

Semileptonic D→πℓν, D→Kℓν and Ds→Kℓν decays with 2+1f domain wall fermions
Semileptonic D→πℓν, D→Kℓν and Ds→Kℓν decays with 2+1f domain wall fermions
We present the status of our project to calculate D→πℓν, D→Kℓν and Ds→Kℓν semileptonic form factors using domain wall fermions for both heavy and light quarks. Our computations are performed using RBC/UKQCD's set of 2+1 flavour domain wall fermion and Iwasaki gauge field ensembles. We plan to calculate three-point functions covering the full, physically allowed kinematic range. Given that the signal decays faster than the noise, unambiguously and reliably extracting the ground state is critical for success. We include an analysis of operator diagonalisation within several possible 2×2 operator bases and find an admixture of gauged fixed wall and Z(2) wall sources to be acceptable at both zero and non-zero momentum. Initial results for semileptonic form factors are presented for first ensembles.
hep-lat
Boyle, Peter
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Debbio, Luigi Del
4820afb6-c91b-4b30-a197-4805ebbc3c01
Erben, Felix
13c8d276-fdde-43ce-8ab0-c71cbe5e2875
Flynn, Jonathan
d8e90963-ba56-415c-bbd4-496b7d91d343
Jüttner, Andreas
a90ff7c5-ae8f-4c8e-9679-b5a95b2a6247
Portelli, Antonin
a2526d4a-144e-4095-802a-229cddb10f0f
Tsang, J. Tobias
e4648385-cecf-4c02-b13e-c06312f16b12
Witzel, Oliver
ceb5d2c8-8f0a-46f4-977e-7d45c6b06b82
Boyle, Peter
78a2aebf-aea7-4925-b5df-ead4b4da6fb2
Debbio, Luigi Del
4820afb6-c91b-4b30-a197-4805ebbc3c01
Erben, Felix
13c8d276-fdde-43ce-8ab0-c71cbe5e2875
Flynn, Jonathan
d8e90963-ba56-415c-bbd4-496b7d91d343
Jüttner, Andreas
a90ff7c5-ae8f-4c8e-9679-b5a95b2a6247
Portelli, Antonin
a2526d4a-144e-4095-802a-229cddb10f0f
Tsang, J. Tobias
e4648385-cecf-4c02-b13e-c06312f16b12
Witzel, Oliver
ceb5d2c8-8f0a-46f4-977e-7d45c6b06b82

[Unknown type: UNSPECIFIED]

Record type: UNSPECIFIED

Abstract

We present the status of our project to calculate D→πℓν, D→Kℓν and Ds→Kℓν semileptonic form factors using domain wall fermions for both heavy and light quarks. Our computations are performed using RBC/UKQCD's set of 2+1 flavour domain wall fermion and Iwasaki gauge field ensembles. We plan to calculate three-point functions covering the full, physically allowed kinematic range. Given that the signal decays faster than the noise, unambiguously and reliably extracting the ground state is critical for success. We include an analysis of operator diagonalisation within several possible 2×2 operator bases and find an admixture of gauged fixed wall and Z(2) wall sources to be acceptable at both zero and non-zero momentum. Initial results for semileptonic form factors are presented for first ensembles.

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2201.02680v1 - Author's Original
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More information

Published date: 7 January 2022
Additional Information: 11 pages, 9 figures, to be published in Proceedings of Science, The 38th International Symposium on Lattice Field Theory
Keywords: hep-lat

Identifiers

Local EPrints ID: 469141
URI: http://eprints.soton.ac.uk/id/eprint/469141
PURE UUID: 2598d9d7-4653-4c39-8090-460f21b33360
ORCID for Jonathan Flynn: ORCID iD orcid.org/0000-0002-6280-1677
ORCID for Andreas Jüttner: ORCID iD orcid.org/0000-0002-3978-0927
ORCID for Antonin Portelli: ORCID iD orcid.org/0000-0002-6059-917X

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Date deposited: 07 Sep 2022 17:37
Last modified: 08 Sep 2022 01:50

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Contributors

Author: Peter Boyle
Author: Luigi Del Debbio
Author: Felix Erben
Author: Jonathan Flynn ORCID iD
Author: Antonin Portelli ORCID iD
Author: J. Tobias Tsang
Author: Oliver Witzel

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