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Light and strange vector resonances from lattice QCD at physical quark masses
/ Boyle, Peter (Brookhaven ; Edinburgh U.) ; Erben, Felix (Edinburgh U. ; CERN) ; Gülpers, Vera (Edinburgh U.) ; Hansen, Maxwell T. (Edinburgh U.) ; Joswig, Fabian (Edinburgh U.) ; Lachini, Nelson Pitanga (Edinburgh U. ; Cambridge U., DAMTP) ; Marshall, Michael (Edinburgh U.) ; Portelli, Antonin (Edinburgh U. ; CERN ; RIKEN AICS, Kobe)
We present the first ab initio calculation at physical quark masses of scattering amplitudes describing the lightest pseudoscalar mesons interacting via the strong force in the vector channel. [...]
CERN-TH-2024-088 ; arXiv:2406.19194.
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7 p.
Fulltext
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Physical-mass calculation of $\rho(770)$ and $K^*(892)$ resonance parameters via $\pi \pi$ and $K \pi$ scattering amplitudes from lattice QCD
/ Boyle, Peter (Brookhaven ; Edinburgh U.) ; Erben, Felix (Edinburgh U. ; CERN) ; Gülpers, Vera (Edinburgh U.) ; Hansen, Maxwell T. (Edinburgh U.) ; Joswig, Fabian (Edinburgh U.) ; Lachini, Nelson Pitanga (Edinburgh U. ; Cambridge U., DAMTP) ; Marshall, Michael (Edinburgh U.) ; Portelli, Antonin (Edinburgh U. ; CERN ; RIKEN AICS, Kobe)
We present our study of the $\rho(770)$ and $K^*(892)$ resonances from lattice quantum chromodynamics (QCD) employing domain-wall fermions at physical quark masses. [...]
CERN-TH-2024-087 ; arXiv:2406.19193.
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27 p.
Fulltext
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Isospin-breaking corrections to light leptonic decays in lattice QCD+QED at the physical point
/ Hermansson-Truedsson, Nils (U. Bern, AEC ; Lund U., Dept. Theor. Phys.) ; Boyle, Peter (Edinburgh U. ; Brookhaven) ; Di Carlo, Matteo (Edinburgh U.) ; Erben, Felix (Edinburgh U.) ; Gülpers, Vera (Edinburgh U.) ; Hansen, Maxwell T. (Edinburgh U.) ; Harris, Tim (Edinburgh U.) ; Hodgson, Raoul (Edinburgh U.) ; Jüttner, Andreas (CERN ; Southampton U.) ; hÓgáin, Fionn Ó. (Edinburgh U.) et al.
We report on the physical-point RBC/UKQCD calculation of the leading isospin-breaking corrections to light-meson leptonic decays. This is highly relevant for future precision tests in the flavour physics sector, in particular the first-row unitarity of the Cabibbo-Kobayashi-Maskawa matrix containing the elements $V_{us}$ and $V_{ud}$. [...]
arXiv:2212.04709.-
2022-12-22 - 10 p.
- Published in : PoS LATTICE2022 (2023) 411
Fulltext: 2212.04709 - PDF; document - PDF;
In : 39th International Symposium on Lattice Field Theory (Lattice 2022), Bonn, Germany, 8 - 13 Aug 2022, pp.411
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Position-Space Renormalisation of the Energy-Momentum Tensor
/ Rocha, Henrique Bergallo (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Del Debbio, Luigi (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Jüttner, Andreas (Southampton U. ; U. Southampton (main) ; CERN) ; Kitching-Morley, Ben (Southampton U. ; U. Southampton (main)) ; Lee, Joseph K.L. (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Portelli, Antonin (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Skenderis, Kostas (U. Southampton (main))
There is increasing interest in the study of nonperturbative aspects of three-dimensional quantum field theories (QFT). They appear as holographic dual to theories of (strongly coupled) gravity. [...]
arXiv:2212.09469.-
2023-01-29 - 11 p.
- Published in : PoS LATTICE2022 (2023) 205
Fulltext: document - PDF; 2212.09469 - PDF;
In : 39th International Symposium on Lattice Field Theory (Lattice 2022), Bonn, Germany, 8 - 13 Aug 2022, pp.205
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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 $\mathrm{O}(1\%)$, 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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Critical behaviour and phase structure of 3d Scalar+Gauge Field Theories in the adjoint representation
/ Rocha, Henrique Bergallo (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Del Debbio, Luigi (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Dobson, Elizabeth (U. Edinburgh, Higgs Ctr. Theor. Phys. ; Graz U.) ; Jüttner, Andreas (Southampton U. ; CERN) ; Kitching-Morley, Ben (Southampton U.) ; Lee, Joseph K L (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Portelli, Antonin (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Skenderis, Kostas (Southampton U.)
In a class of holographic models for cosmology, the dual theory is given by a massless super-renormalisable QFT in 3 dimensions. In order to obtain cosmological observables, correlators of this QFT may be obtained via lattice field theory. [...]
2022 - 9 p.
- Published in : PoS LATTICE2021 (2022) 270
Fulltext: PDF;
In : 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.270
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A lattice QCD perspective on weak decays of b and c quarks Snowmass 2022 White Paper
/ Boyle, Peter A. (Brookhaven ; U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Chakraborty, Bipasha (Cambridge U., DAMTP) ; Davies, Christine T.H. (Glasgow U.) ; DeGrand, Thomas (Colorado U.) ; DeTar, Carleton (Utah U.) ; Del Debbio, Luigi (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; El-Khadra, Aida X. (Illinois U., Urbana) ; Erben, Felix (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Flynn, Jonathan M. (U. Southampton (main)) ; Gámiz, Elvira (Granada U., Theor. Phys. Astrophys.) et al.
Lattice quantum chromodynamics has proven to be an indispensable method to determine nonperturbative strong contributions to weak decay processes. [...]
arXiv:2205.15373 ; CERN-TH-2022-036 ; FERMILAB-CONF-22-433-SCD-T ; JLAB-THY-22-3582,
MITP-22-020 ; MIT-CTP/5413 ; MS-TP-22-07 ; SI-HEP-2022-11.
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19.
Fermilab Library Server - eConf - Fulltext - Fulltext
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Renormalization of the $3D$$SU(N)$ scalar energy-momentum tensor using the Wilson flow
/ Lee, Joseph K.L. (Edinburgh U., Inst. Astron.) ; Dobson, Elizabeth (Edinburgh U., Inst. Astron. ; Graz U.) ; Jüttner, Andreas (Southampton U. ; CERN) ; Kitching-Morley, Ben (Southampton U. ; U. Southampton (main)) ; Nourry, Valentin (Edinburgh U., Inst. Astron. ; APC, Paris) ; Portelli, Antonin (Edinburgh U., Inst. Astron.) ; Rocha, Henrique Bergallo (Edinburgh U., Inst. Astron.) ; Skenderis, Kostas (Southampton U. ; U. Southampton (main)) ; Del Debbio, Luigi (Edinburgh U., Inst. Astron.)
In the holographic approach to cosmology, cosmological observables are described in terms of correlators of a three-dimensional boundary quantum field theory. As a concrete model, we study the $3D$ massless $SU(N)$ scalar matrix field theory with a $\phi^4$ interaction. [...]
arXiv:2202.03970.-
2022-05-16 - 10 p.
- Published in : PoS LATTICE2021 (2022) 313
Fulltext: 2202.03970 - PDF; document - PDF;
In : 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.313
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Near Physical Point Lattice Calculation of Isospin-Breaking Corrections to $K_{\ell2}/\pi_{\ell2}$
/ Yong, Andrew Zhen Ning (Edinburgh U.) ; Boyle, Peter (Edinburgh U. ; Brookhaven) ; 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 (U. Bern, AEC) ; Hodgson, Raoul (Edinburgh U.) ; Jüttner, Andreas (Southampton U. ; CERN) et al.
In recent years, lattice determinations of non-perturbative quantities such as $f_K$ and $f_\pi$, which are relevant for $V_{us}$ and $V_{ud}$, have reached an impressive precision of $\mathcal{O}(1\%)$ or better. To make further progress, electromagnetic and strong isospin breaking effects must be included in lattice QCD simulations. [...]
arXiv:2112.11823.-
2022-05-16 - 11 p.
- Published in : PoS LATTICE2021 (2022) 110
Fulltext: document - PDF; 2112.11823 - PDF;
In : 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.110
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