Inclusive semileptonic decays from lattice QCD: analysis of systematic effects
Inclusive semileptonic decays from lattice QCD: analysis of systematic effects
Lattice QCD calculations of inclusive semileptonic decay rates involve new types of systematic effects, such as truncation errors in the estimation of energy integrals, or finite-volume effects for multi-body final states. We investigate them for the lattice data of D_s \to X_s \ell\nu decays, obtained using Möbius domain-wall fermions. Separating the ground-state and excited-state contributions results in better control over these systematic effects. With the Chebyshev polynomial approximation, the truncation error is under control, while the finite-volume effects are estimated using a model to describe two-body final states.
hep-lat, hep-ph
Kellermann, Ryan
e648d747-545c-4371-b656-7638b10ac138
Barone, Alessandro
7a9d15c7-a096-47f9-884e-2b4cfaa4cfee
Elgaziari, Ahmed
c8ea4eb4-d84b-4e21-ba11-27c5243434e2
Hashimoto, Shoji
2b3be047-9e76-42d7-ba7e-50f230e88446
Hu, Zhi
a870b3c2-c409-429f-b624-e4e1165dcdd3
Jüttner, Andreas
a90ff7c5-ae8f-4c8e-9679-b5a95b2a6247
Kaneko, Takashi
c02e60bd-618e-4c8a-b0e1-22a19d877c50
Kellermann, Ryan
e648d747-545c-4371-b656-7638b10ac138
Barone, Alessandro
7a9d15c7-a096-47f9-884e-2b4cfaa4cfee
Elgaziari, Ahmed
c8ea4eb4-d84b-4e21-ba11-27c5243434e2
Hashimoto, Shoji
2b3be047-9e76-42d7-ba7e-50f230e88446
Hu, Zhi
a870b3c2-c409-429f-b624-e4e1165dcdd3
Jüttner, Andreas
a90ff7c5-ae8f-4c8e-9679-b5a95b2a6247
Kaneko, Takashi
c02e60bd-618e-4c8a-b0e1-22a19d877c50
[Unknown type: UNSPECIFIED]
Abstract
Lattice QCD calculations of inclusive semileptonic decay rates involve new types of systematic effects, such as truncation errors in the estimation of energy integrals, or finite-volume effects for multi-body final states. We investigate them for the lattice data of D_s \to X_s \ell\nu decays, obtained using Möbius domain-wall fermions. Separating the ground-state and excited-state contributions results in better control over these systematic effects. With the Chebyshev polynomial approximation, the truncation error is under control, while the finite-volume effects are estimated using a model to describe two-body final states.
Text
2504.03358v1
- Author's Original
More information
Accepted/In Press date: 4 April 2025
Additional Information:
56 pages, 23 figures, 5 tables
Keywords:
hep-lat, hep-ph
Identifiers
Local EPrints ID: 501063
URI: http://eprints.soton.ac.uk/id/eprint/501063
PURE UUID: 734a8ba2-d487-42e8-aa7a-b5c5cdc4f141
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Date deposited: 21 May 2025 16:57
Last modified: 22 May 2025 01:40
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Contributors
Author:
Ryan Kellermann
Author:
Alessandro Barone
Author:
Shoji Hashimoto
Author:
Zhi Hu
Author:
Takashi Kaneko
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