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The I = 1/2 and 3/2 K−π 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−π 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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2.
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Updates on inclusive charmed and bottomed meson decays from the lattice
/ Kellermann, Ryan (KEK, Tsukuba) ; Barone, Alessandro (U. Mainz, PRISMA ; U. Southampton (main)) ; Hashimoto, Shoji (KEK, Tsukuba) ; Jüttner, Andreas (U. Southampton (main) ; CERN) ; Kaneko, Takashi (KEK, Tsukuba ; KMI, Nagoya)
With the development of lattice QCD in recent years, a determination of decay rates for inclusive semileptonic decays from lattice correlators now seems viable. [...]
arXiv:2405.06152.
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Simulating rare kaon decays K+→π+ℓ+ℓ− using domain wall lattice QCD with physical light quark masses
/ Boyle, P.A. (Edinburgh U. ; Brookhaven) ; Erben, F. (Edinburgh U.) ; Flynn, J.M. (Southampton U. ; U. Southampton (main)) ; Gülpers, V. (Edinburgh U.) ; Hill, R.C. (Edinburgh U. ; Southampton U.) ; Hodgson, R. (Edinburgh U.) ; Jüttner, A. (Southampton U. ; U. Southampton (main) ; CERN) ; hÓgáin, F.Ó. (Edinburgh U.) ; Portelli, A. (Edinburgh U.) ; Sachrajda, C.T. (Southampton U.)
/RBC Collaboration ; UKQCD Collaboration
We report the first calculation using physical light-quark masses of the electromagnetic form factor V(z) describing the long-distance contributions to the K+→π+ℓ+ℓ− decay amplitude. The calculation is performed on a 2+1 flavor domain wall fermion ensemble with inverse lattice spacing a−1=1.730(4)GeV. [...]
arXiv:2202.08795; CERN-TH-2022-037.-
2023-01-01 - 11 p.
- Published in : Phys. Rev. D
Fulltext: PDF;
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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
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Approaches to inclusive semileptonic B(s)-meson decays from Lattice QCD
/ Barone, Alessandro (Southampton U. ; KEK, Tsukuba) ; Hashimoto, Shoji (KEK, Tsukuba ; Sokendai, Tsukuba) ; Jüttner, Andreas (Southampton U. ; CERN) ; Kaneko, Takashi (KEK, Tsukuba ; Sokendai, Tsukuba ; KMI, Nagoya) ; Kellermann, Ryan (KEK, Tsukuba ; Sokendai, Tsukuba)
We address the nonperturbative calculation of the inclusive decay rate of semileptonic B(s)-meson decays from lattice QCD. Precise Standard-Model predictions are key ingredients in searches for new physics, and this type of computation may eventually provide new insight into the long-standing tension between the inclusive and exclusive determinations of the Cabibbo-Kobayashi-Maskawa (CKM) matrix elements |Vcb| and |Vub|. [...]
arXiv:2305.14092; KEK-CP-0394; CERN-TH-2023-087.-
2023-07-18 - 43 p.
- Published in : JHEP 2307 (2023) 145
Fulltext: 2305.14092 - PDF; Publication - PDF;
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Systematic effects in the lattice calculation of inclusive semileptonic decays
/ Kellermann, Ryan (KEK, Tsukuba) ; Barone, Alessandro (U. Mainz, PRISMA) ; Elgaziari, Ahmed (U. Southampton (main)) ; Hashimoto, Shoji (KEK, Tsukuba ; Sokendai, Tsukuba) ; Hu, Zhi (KEK, Tsukuba) ; Jüttner, Andreas (U. Southampton (main) ; CERN) ; Kaneko, Takashi (KEK, Tsukuba ; KMI, Nagoya)
We report on the calculation of the inclusive semileptonic decay of the Ds meson on the lattice. We simulate the Ds→Xsℓνℓ process with Möbius domain-wall charm and strange quarks, whose masses are approximately tuned to their physical values. [...]
arXiv:2411.18058; KEK-CP-0405.-
2024-12-05 - 9 p.
- Published in : PoS LATTICE2024 (2025) 245
Fulltext: 2411.18058 - PDF; document - PDF;
In : 41st International Symposium on Lattice Field Theory (Lattice 2024), Liverpool, United Kingdom, 20 Jul - 3 Aug 2024, pp.245
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Studies on finite-volume effects in the inclusive semileptonic decays of charmed mesons
/ Kellermann, Ryan (Sokendai, Tsukuba ; KEK, Tsukuba) ; Barone, Alessandro (U. Mainz, PRISMA ; U. Southampton (main)) ; Hashimoto, Shoji (Sokendai, Tsukuba ; KEK, Tsukuba) ; Jüttner𝑐, Andreas (U. Southampton (main) ; CERN) ; Kaneko𝑎, Takashi (CERN ; KMI, Nagoya ; Sokendai, Tsukuba ; KEK, Tsukuba)
We report on the calculation of the inclusive semileptonic decay of the Ds meson on the lattice. We simulate the Ds→Xsℓνℓ process with Möbius domain-wall charm and strange quarks, whose masses were approximately tuned to the physical values. [...]
arXiv:2312.16442; KEK-TH-2591.-
2024-05-04 - 7 p.
- Published in : PoS LATTICE2023 (2024) 272
Fulltext: document - PDF; 2312.16442 - PDF;
In : 40th International Symposium on Lattice Field Theory (Lattice 2023), Fermilab, Batavia, IL, United States, 30 Jul - 5 Aug 2023, pp.272
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Isospin-breaking corrections to light-meson leptonic decays from lattice simulations at physical quark masses
/ Boyle, Peter (Brookhaven ; Edinburgh U.) ; Di Carlo, Matteo (Edinburgh U.) ; Erben, Felix (Edinburgh U.) ; Gülpers, Vera (Edinburgh U.) ; Hansen, Maxwell T. (Edinburgh U.) ; Harris, Tim (Edinburgh U.) ; Hermansson-Truedsson, Nils (Bern U. ; Lund U., Dept. Theor. Phys.) ; Hodgson, Raoul (Edinburgh U.) ; Jüttner, Andreas (Southampton U. ; CERN) ; hÓgáin, Fionn Ó. (Edinburgh U.) et al.
The decreasing uncertainties in theoretical predictions and experimental measurements of several hadronic observables related to weak processes, which in many cases are now smaller than O(1%), require theoretical calculations to include subleading corrections that were neglected so far. Precise determinations of leptonic and semi-leptonic decay rates, including QED and strong isospin-breaking effects, can play a central role in solving the current tensions in the first-row unitarity of the CKM matrix. [...]
arXiv:2211.12865; CERN-TH-2022-193; LU-TP 22-59.-
2023-02-27 - 66 p.
- Published in : JHEP 2302 (2023) 242
Fulltext: document - PDF; 2211.12865 - PDF;
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Inclusive semi-leptonic B(s) mesons decay at the physical b quark mass
/ Barone, Alessandro (Southampton U.) ; Jüttner, Andreas (Southampton U. ; CERN) ; Hashimoto, Shoji (KEK, Tsukuba ; Sokendai, Tsukuba) ; Kaneko, Takashi (KEK, Tsukuba ; Sokendai, Tsukuba ; KMI, Nagoya) ; Kellermann, Ryan (KEK, Tsukuba ; Sokendai, Tsukuba)
We address the non-perturbative calculation of the decay rate of inclusive semi-leptonic B(s) mesons decays from lattice QCD. Precise theoretical Standard Model predictions are key ingredients in searches for new physics. [...]
arXiv:2211.15623.-
2022-12-22 - 10 p.
- Published in : PoS: LATTICE2022 (2023) , pp. 403
Fulltext: document - PDF; 2211.15623 - PDF;
In : 39th International Symposium on Lattice Field Theory (Lattice 2022), Bonn, Germany, 8 - 13 Aug 2022, pp.403
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Using Forward-Backward Drell-Yan Asymmetry in PDF Determinations
/ Fiaschi, Juri (Munster U., ITP) ; Accomando, Elena (Southampton U.) ; Hautmann, Francesco (Oxford U. ; CERN) ; Moretti, Stefano (Southampton U.)
/xFitter developer’s team
We study the impact of the inclusion of Neutral Current (NC) DY data from LHC mapped in the Forward-Backward Asymmetry (AFB) observable on PDF uncertainties, using the open source platform \texttt{xFitter}. We find that AFB enables new PDF sensitivity at current and future luminosity stages of LHC..
arXiv:1906.11793; MS-TP-19-16; CERN-TH-2019-100.-
SISSA, 2019-07-20 - 6 p.
- Published in : PoS DIS2019 (2019) 012
Fulltext: 1906.11793 - PDF; PoS(DIS2019)012 - PDF;
In : The XXVII International Workshop on Deep Inelastic Scattering and Related Subjects, Turin, Italy, 8 - 12 Apr 2019, pp.012
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