Search Results - "Rusetsky, Akaki"
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On the three-particle analog of the Lellouch-Lüscher formula
Published in The journal of high energy physics (01-03-2021)“…A bstract Using non-relativistic effective field theory, we derive a three-particle analog of the Lellouch-Lüscher formula at the leading order. This formula…”
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Relativistic N-particle energy shift in finite volume
Published in The journal of high energy physics (08-02-2021)“…A bstract We present a general method for deriving the energy shift of an interacting system of N spinless particles in a finite volume. To this end, we use…”
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Three-particle quantization condition in a finite volume: 2. General formalism and the analysis of data
Published in The journal of high energy physics (01-10-2017)“…A bstract We derive the three-body quantization condition in a finite volume using an effective field theory in the particle-dimer picture. Moreover, we…”
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Multi-particle systems on the lattice and chiral extrapolations: a brief review
Published in The European physical journal. ST, Special topics (01-03-2021)“…The extraction of two- and three-body hadronic scattering amplitudes and the properties of the low-lying hadronic resonances from the finite-volume energy…”
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Three-particle quantization condition in a finite volume: 1. The role of the three-particle force
Published in The journal of high energy physics (01-09-2017)“…A bstract Using non-relativistic effective Lagrangians in the particle-dimer picture, we rederive the expression for the energy shift of a loosely bound…”
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Relativistic-invariant formulation of the NREFT three-particle quantization condition
Published in The journal of high energy physics (01-02-2022)“…A bstract A three-particle quantization condition on the lattice is written down in a manifestly relativistic-invariant form by using a generalization of the…”
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A method to measure the antikaon–nucleon scattering length in lattice QCD
Published in Physics letters. B (16-11-2009)“…We propose a method to determine the isoscalar K¯N scattering length on the lattice. Our method represents the generalization of Lüscher's approach in the…”
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Three-particle Lellouch-Lüscher formalism in moving frames
Published in The journal of high energy physics (22-02-2023)“…A bstract A manifestly relativistic-invariant Lellouch-Lüscher formalism for the decays into three identical particles with no two-to-three transitions is…”
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Testing a new method for scattering in finite volume in the ϕ4 theory
Published in The European physical journal. C, Particles and fields (01-11-2021)“…We test an alternative proposal by Bruno and Hansen (J High Energy Phys 2021(6), https://doi.org/10.1007/JHEP06(2021)043 , 2021) to extract the scattering…”
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Lellouch-Lüscher factor for the K → 3π decays
Published in The journal of high energy physics (23-05-2024)“…A bstract We derive an explicit expression for the Lellouch-Lüscher (LL) factor in the K → 3 π decays at leading order (without derivative couplings). Several…”
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Lüscher equation with long-range forces
Published in The journal of high energy physics (14-05-2024)“…A bstract We derive the modified Lüscher equation in the presence of the long-range force caused by the exchange of a light particle. It is shown that the use…”
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A framework for the calculation of the ΔNγ⁎ transition form factors on the lattice
Published in Nuclear physics. B (01-09-2014)“…Using the non-relativistic effective field theory framework in a finite volume, we discuss the extraction of the ΔNγ⁎ transition form factors from lattice…”
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The B→K⁎ form factors on the lattice
Published in Nuclear physics. B (01-09-2016)“…The extraction of the B→K⁎ transition form factors from lattice data is studied, applying non-relativistic effective field theory in a finite volume. The…”
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14
Spurious poles in a finite volume
Published in The journal of high energy physics (01-07-2022)“…A bstract Using effective-range expansion for the two-body amplitudes may generate spurious sub-threshold poles outside of the convergence range of the…”
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15
Resonance form factors from finite-volume correlation functions with the external field method
Published in The journal of high energy physics (17-10-2022)“…A bstract A novel method for the extraction of form factors of unstable particles on the lattice is proposed. The approach is based on the study of…”
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Predicting isovector charmonium-like states from X(3872) properties
Published in The journal of high energy physics (19-08-2024)“…A bstract Using chiral effective field theory, we predict that there must be isovector charmonium-like D D ¯ ∗ hadronic molecules with J PC = 1 ++ denoted as W…”
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Vector-Vector Scattering on the Lattice
Published in EPJ Web of Conferences (01-01-2018)“…In this work we present an extension of the LüScher formalism to include the interaction of particles with spin, focusing on the scattering of two vector…”
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Journal Article Conference Proceeding -
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Extracting observables from lattice data in the three-particle sector
Published in EPJ Web of Conferences (01-01-2018)“…The three-particle quantization condition is derived, using the particle-dimer picture in the non-relativistic effective field theory. The procedure for the…”
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Journal Article Conference Proceeding -
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Spin structure of the nucleon (theory)
Published in EPJ Web of Conferences (01-01-2017)“…We review the achievements of the project C.3, that dealt with the formulation and application of effective field theories including the Δ and Roper resonances…”
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Journal Article Conference Proceeding -
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Baryon resonances in a finite volume
Published in EPJ Web of Conferences (01-01-2017)“…We review the main results obtained in the project A.6, which dealt with hadron-hadron scattering and resonances in a finite volume. These results provide…”
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Journal Article Conference Proceeding