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Towards a high-precision description of the $\rho$ and K* resonances / Lachini, Nelson Pitanga (Edinburgh U. ; Cambridge U., DAMTP) ; Boyle, Peter (Edinburgh U. ; Brookhaven) ; Erben, Felix (Edinburgh U. ; CERN) ; Gülpers, Vera (Edinburgh U.) ; Hansen, Maxwell T (Edinburgh U.) ; Joswig, Fabian (Edinburgh U.) ; Marshall, Michael (Edinburgh U.) ; Portelli, Antonin (Edinburgh U. ; CERN ; RIKEN AICS, Kobe)
We summarise our determination of the $\rho$ and $K^*$ resonance parameters from lattice QCD at a physical pion mass. The methods for computing correlation functions and extracting energy levels from an RBC-UKQCD domain-wall fermion ensemble are reviewed. [...]
2024 - 15 p. - Published in : PoS EuroPLEx2023 (2024) 017 Fulltext: PDF;
In : EuroPLEx Final Conference (EuroPLEx2023), Berlin, Germany, 11 - 15 Sep 2023, pp.017

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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.) ; Marshall, Michael (Edinburgh U.) ; Lachini, Nelson Pitanga (Edinburgh U. ; Cambridge U., DAMTP) ; 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. Using lattice quantum chromodynamics, we postdict the defining parameters for two short-lived resonances, the $\rho(770)$ and $K^*(892)$, which manifest as complex energy poles in $\pi \pi$ and $K \pi$ scattering amplitudes, respectively. [...]
arXiv:2406.19194; CERN-TH-2024-088.- 2025-03-18 - 7 p. - Published in : Phys. Rev. Lett. 134 (2025) 111901 Fulltext: PDF;

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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.) ; Marshall, Michael (Edinburgh U.) ; Lachini, Nelson Pitanga (Edinburgh U. ; Cambridge U., DAMTP) ; 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. We determine the finite-volume energy spectrum in various momentum frames and obtain phase-shift parameterizations via the Lüscher formalism, and as a final step the complex resonance poles of the $\pi \pi$ and $K \pi$ elastic scattering amplitudes via an analytical continuation of the models. [...]
arXiv:2406.19193; CERN-TH-2024-087.- 2025-03-01 - 27 p. - Published in : Phys. Rev. D 111 (2025) 054510 Fulltext: 2406.19193 - PDF; Published_version - PDF;

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参见：相似的作者
1	Lachini, Nelson
2	Lachini, Nelson P.

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