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1.
Absorbing discretization effects with a massive renormalization scheme: The charm-quark mass / Del Debbio, Luigi (Edinburgh U.) ; Erben, Felix (CERN) ; Flynn, Jonathan M. (Southampton U.) ; Mukherjee, Rajnandini (Southampton U.) ; Tsang, J. Tobias (CERN) /RBC Collaboration ; UKQCD Collaboration
We present the first numerical implementation of the massive SMOM (mSMOM) renormalization scheme and use it to calculate the charm quark mass. Based on ensembles with three flavours of dynamical domain wall fermions with lattice spacings in the range 0.11 -- 0.08 fm, we demonstrate that the mass scale which defines the mSMOM scheme can be chosen such that the extrapolation has significantly smaller discretisation effects than the SMOM scheme. [...]
arXiv:2407.18700; CERN-TH-2024-124.- 2024-09-01 - 15 p. - Published in : Phys. Rev. D 110 (2024) 054512 Fulltext: Publication - PDF; 2407.18700 - PDF;
2.
Kaon mixing beyond the standard model with physical masses / Boyle, Peter A. (Brookhaven ; Edinburgh U.) ; Erben, Felix (CERN) ; Flynn, Jonathan M. (Southampton U.) ; Garron, Nicolas (Liverpool U. ; Liverpool U., Dept. Math.) ; Kettle, Julia (Edinburgh U.) ; Mukherjee, Rajnandini (Southampton U.) ; Tsang, J. Tobias (CERN) /RBC Collaboration ; UKQCD Collaboration
We present non-perturbative results for beyond the standard model kaon mixing matrix elements in the isospin symmetric limit ($m_u=m_d$) of QCD, including a complete estimate of all dominant sources of systematic error. Our results are obtained from numerical simulations of lattice QCD with $N_f = 2+1$ flavours of dynamical domain wall fermions. [...]
arXiv:2404.02297; CERN-TH-2024-040; LTH 1366.- 2024-08-01 - 31 p. - Published in : Phys. Rev. D 110 (2024) 034501 Fulltext: Publication - PDF; 2404.02297 - PDF;
3.
Charm quark mass using a massive nonperturbative renormalisation scheme / Del Debbio, Luigi (Piemonte Orientale U., Alessandria ; INFN, Turin) ; Erben, Felix (CERN) ; Flynn, Jonathan (Southampton U.) ; Mukherjee, Rajnandini (Southampton U.) ; Tsang, J. Tobias (CERN)
We present a first numerical implementation of a massive nonperturbative renormalisation scheme, RI/mSMOM, in the study of heavy quarks using the domain-wall fermion action. In particular, we calculate renormalisation constants for fermion bilinears at non-vanishing heavy-quark masses and compare the approach to the continuum of the renormalised charm-quark mass with that from a mass-independent scheme..
arXiv:2312.16537; CERN-TH-2023-250.- 2024-05-02 - 8 p. - Published in : PoS LATTICE2023 (2024) 294 Fulltext: document - PDF; 2312.16537 - PDF;
In : 40th International Symposium on Lattice Field Theory (Lattice 2023), Fermilab, Batavia, IL, United States, 30 Jul - 5 Aug 2023, pp.294
4.
The $I$ = 1/2 and 3/2 $K-\pi$ scattering length with domain wall fermions at physical pion mass with all-to-all propagators / Asmussen, Nils (Southampton U.) ; Erben, Felix (Piemonte Orientale U., Alessandria ; INFN, Turin) ; Flynn, Jonathan (Southampton U.) ; Jüttner, Andreas (Southampton U. ; CERN) ; Mukherjee, Rajnandini (Southampton U.) ; Sachrajda, Christopher T. (Southampton U.)
We present our calculations for the $I$ = 1/2 and 3/2 $K-\pi$ s-wave scattering length with physical quark masses, extracted from the interaction energy of Euclidean two-point functions. We use the domain wall fermion action with physical quark masses at a single lattice spacing. [...]
arXiv:2301.12858.- 2023-01-26 - 8 p. - Published in : PoS LATTICE2022 (2022) 069 Fulltext: document - PDF; 2301.12858 - PDF;
In : 39th International Symposium on Lattice Field Theory (Lattice 2022), Bonn, Germany, 8 - 13 Aug 2022, pp.069

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