Charm sea effects on charmonium decay constants and heavy meson masses

Calì, Salvatore; Eckert, Kevin; Heitger, Jochen; Knechtli, Francesco; Korzec, Tomasz

doi:10.1140/epjc/s10052-021-09520-y

Cited by 3 publications

(1 citation statement)

References 62 publications

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“…Open boundaries are the standard in simulations of CLS and are used in simulations of very fine lattice spacings, see e.g. [51].…”

Section: Modification Of the Hmcmentioning

confidence: 99%

Review on Algorithms for dynamical fermions

Finkenrath¹

2023

Proceedings of the 39th International Symposium on Lattice Field Theory — PoS(LATTICE2022)

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This review discusses the current and next steps in research of algorithms for dynamical fermions in large scale lattice QCD simulations. First a short overview on the state-of-the-art of ensemble generation at the physical point is given. Followed by an overview on required steps towards simulation of large lattices for the Hybrid Monte Carlo algorithm. Here, in particular, the status of iterative solvers and tuning procedures for numerical integrators within the molecular dynamics are discussed. This is followed by a review on the on-going developments for algorithms, with a focus on methods which are potentially useful to simulate gauge theories at very fine lattice spacings, i.e. well suited to overcome freezing of the topological charge. This includes modification of the HMC algorithm as well as a discussion of algorithms which includes the fermion weight via global correction steps. Parts of the discussions are on the application of generative models via gauge equivariant flows as well as multi-level algorithms.

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“…Open boundaries are the standard in simulations of CLS and are used in simulations of very fine lattice spacings, see e.g. [51].…”

Section: Modification Of the Hmcmentioning

confidence: 99%

Review on Algorithms for dynamical fermions

Finkenrath¹

2023

Proceedings of the 39th International Symposium on Lattice Field Theory — PoS(LATTICE2022)

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D and Ds decay constants in Nf = 2 + 1 QCD with Wilson fermions

Kuberski,

Joswig,

Collins

et al. 2024

J. High Energ. Phys.

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We present results for the leptonic decay constants of the D and Ds mesons from Nf = 2 + 1 lattice QCD. We employ a set of 49 high statistics gauge ensembles generated by the Coordinated Lattice Simulations (CLS) effort utilising non-perturbatively improved Wilson fermions and the tree-level Symanzik improved gauge action at six values of the lattice spacing in the range a = 0.098 fm down to a = 0.039 fm, with pion masses varying from around 420 MeV down to below the physical point. The ensembles lie on three trajectories in the quark mass plane, two trajectories intersecting close to the physical quark mass point and the third one approaching the SU(3) chiral limit, enabling tight control of the light and strange quark mass dependence. We obtain $$ {f}_{{\textrm{D}}_{\textrm{s}}} $$ f D s = 246.8(1.3) MeV, fD = 208.4(1.5) MeV and $$ {f}_{{\textrm{D}}_{\textrm{s}}} $$ f D s /fD = 1.1842(36), where the precision of our results is mostly limited by the determination of the scale.

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FLAG Review 2021

Aoki

Blum²,

Colangelo³

et al. 2022

Eur. Phys. J. C

349

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We review lattice results related to pion, kaon, D-meson, B-meson, and nucleon physics with the aim of making them easily accessible to the nuclear and particle physics communities. More specifically, we report on the determination of the light-quark masses, the form factor $$f_+(0)$$ f + ( 0 ) arising in the semileptonic $$K \rightarrow \pi $$ K → π transition at zero momentum transfer, as well as the decay constant ratio $$f_K/f_\pi $$ f K / f π and its consequences for the CKM matrix elements $$V_{us}$$ V us and $$V_{ud}$$ V ud . Furthermore, we describe the results obtained on the lattice for some of the low-energy constants of $$SU(2)_L\times SU(2)_R$$ S U ( 2 ) L × S U ( 2 ) R and $$SU(3)_L\times SU(3)_R$$ S U ( 3 ) L × S U ( 3 ) R Chiral Perturbation Theory. We review the determination of the $$B_K$$ B K parameter of neutral kaon mixing as well as the additional four B parameters that arise in theories of physics beyond the Standard Model. For the heavy-quark sector, we provide results for $$m_c$$ m c and $$m_b$$ m b as well as those for the decay constants, form factors, and mixing parameters of charmed and bottom mesons and baryons. These are the heavy-quark quantities most relevant for the determination of CKM matrix elements and the global CKM unitarity-triangle fit. We review the status of lattice determinations of the strong coupling constant $$\alpha _s$$ α s . We consider nucleon matrix elements, and review the determinations of the axial, scalar and tensor bilinears, both isovector and flavor diagonal. Finally, in this review we have added a new section reviewing determinations of scale-setting quantities.

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Charm sea effects on charmonium decay constants and heavy meson masses

Cited by 3 publications

References 62 publications

Review on Algorithms for dynamical fermions

Review on Algorithms for dynamical fermions

D and Ds decay constants in Nf = 2 + 1 QCD with Wilson fermions

FLAG Review 2021

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