Charm physics with overlap fermions on 2+1-flavor domain wall fermion configurations

Dong Hao Li; Ying Chen; Ming Gong; Keh Fei Liu; Zhaofeng Liu; Ting Xiao Wang

doi:10.1088/1674-1137/ad736f

Charm physics with overlap fermions on 2+1-flavor domain wall fermion configurations

Dong Hao Li
, Ying Chen
, Ming Gong
, Keh Fei Liu
, Zhaofeng Liu
, Ting Xiao Wang

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Decay constants of pseudoscalar mesons D, , and vector mesons , , are determined from the lattice QCD at a lattice spacing fm. For vector mesons, the decay constants defined by tensor currents are given in the scheme at GeV. The calculation is performed on domain wall fermion configurations generated by the RBC-UKQCD collaborations and the overlap fermion action is used for the valence quarks. Comparing the current results with our previous results at a coarser lattice spacing fm provides a better understanding of the discretization error. We obtain with a better precision than our previous result. Combining our MeV with the total width of determined in a recent study gives a branching fraction for leptonic decay.

Original language	English
Article number	123104
Journal	Chinese Physics C
Volume	48
Issue number	12
DOIs	https://doi.org/10.1088/1674-1137/ad736f
State	Published - Dec 1 2024

Bibliographical note

Publisher Copyright:
© 2024 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.

Funding

Supported in part by the National Key Research and Development Program of China (2020YFA0406400, 2023YFA1606002), the National Natural Science Foundation of China (12075253, 11935017, 12192264, 12293060, 12293065, 12293063, 12070131001), CRC 110 by DFG and NNSFC. Keh-Fei Liu is supported by the U.S. DOE Grant (DE-SC0013065) and DOE Grant (DEAC05-06OR23177), which is within the framework of the TMD Topical Collaboration Article funded by SCOAP

Funders	Funder number
Deutsche Forschungsgemeinschaft
SCOAP
National Natural Science Foundation of China (NSFC)	12293060, 12070131001, 12293065, 12075253, 12293063, 11935017, 12192264
U.S. Department of Energy EPSCoR	DEAC05-06OR23177, DE-SC0013065
National Key Basic Research and Development Program of China	2020YFA0406400, 2023YFA1606002

Keywords

charmed meson decay constants
charmonium decay constants
lattice QCD
leptonic decays
overlap fermions
vector meson decay constants

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation
Astronomy and Astrophysics

Access to Document

10.1088/1674-1137/ad736f

Cite this

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title = "Charm physics with overlap fermions on 2+1-flavor domain wall fermion configurations",

abstract = "Decay constants of pseudoscalar mesons D, , and vector mesons , , are determined from the lattice QCD at a lattice spacing fm. For vector mesons, the decay constants defined by tensor currents are given in the scheme at GeV. The calculation is performed on domain wall fermion configurations generated by the RBC-UKQCD collaborations and the overlap fermion action is used for the valence quarks. Comparing the current results with our previous results at a coarser lattice spacing fm provides a better understanding of the discretization error. We obtain with a better precision than our previous result. Combining our MeV with the total width of determined in a recent study gives a branching fraction for leptonic decay.",

keywords = "charmed meson decay constants, charmonium decay constants, lattice QCD, leptonic decays, overlap fermions, vector meson decay constants",

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T1 - Charm physics with overlap fermions on 2+1-flavor domain wall fermion configurations

AU - Li, Dong Hao

AU - Chen, Ying

AU - Gong, Ming

AU - Liu, Keh Fei

AU - Liu, Zhaofeng

AU - Wang, Ting Xiao

N1 - Publisher Copyright: © 2024 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.

PY - 2024/12/1

Y1 - 2024/12/1

N2 - Decay constants of pseudoscalar mesons D, , and vector mesons , , are determined from the lattice QCD at a lattice spacing fm. For vector mesons, the decay constants defined by tensor currents are given in the scheme at GeV. The calculation is performed on domain wall fermion configurations generated by the RBC-UKQCD collaborations and the overlap fermion action is used for the valence quarks. Comparing the current results with our previous results at a coarser lattice spacing fm provides a better understanding of the discretization error. We obtain with a better precision than our previous result. Combining our MeV with the total width of determined in a recent study gives a branching fraction for leptonic decay.

AB - Decay constants of pseudoscalar mesons D, , and vector mesons , , are determined from the lattice QCD at a lattice spacing fm. For vector mesons, the decay constants defined by tensor currents are given in the scheme at GeV. The calculation is performed on domain wall fermion configurations generated by the RBC-UKQCD collaborations and the overlap fermion action is used for the valence quarks. Comparing the current results with our previous results at a coarser lattice spacing fm provides a better understanding of the discretization error. We obtain with a better precision than our previous result. Combining our MeV with the total width of determined in a recent study gives a branching fraction for leptonic decay.

KW - charmed meson decay constants

KW - charmonium decay constants

KW - lattice QCD

KW - leptonic decays

KW - overlap fermions

KW - vector meson decay constants

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U2 - 10.1088/1674-1137/ad736f

DO - 10.1088/1674-1137/ad736f

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VL - 48

JO - Chinese Physics C

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Charm physics with overlap fermions on 2+1-flavor domain wall fermion configurations

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

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