Unitary Bethe-Salpeter Methods in Two- and Three-Body Systems

Sadasivan, Daniel

doi:10.2172/1728591

2020

DOI: 10.2172/1728591

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Unitary Bethe-Salpeter Methods in Two- and Three-Body Systems

Daniel Sadasivan

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2021

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“…(1). With all parameters fixed from the lattice, T c is calculated in the JLS basis [93,115]. The integration over spectator momenta is performed on a complex contour, avoiding singularities for both real and complex-valued √ s. See supplement D [108] for technical details and the projection T c λ λ → T c .…”

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Three-body dynamics of the $a_1(1260)$ resonance from lattice QCD

Mai,

Alexandru,

Brett

et al. 2021

Preprint

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Resonant hadronic systems often exhibit a complicated decay pattern in which three-body dynamics play a relevant or even dominant role. In this work we focus on the a1(1260) resonance. For the first time, the pole position and branching ratios of a three-body resonance are calculated from lattice QCD using one-, two-, and three-meson interpolators and a three-body finite-volume formalism extended to spin and coupled channels. This marks a new milestone for ab-initio studies of ordinary resonances along with hybrid and exotic hadrons involving three-body dynamics.

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mentioning

confidence: 99%

Three-body dynamics of the $a_1(1260)$ resonance from lattice QCD

Mai,

Alexandru,

Brett

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

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Unitary Bethe-Salpeter Methods in Two- and Three-Body Systems

Cited by 1 publication

References 144 publications

Three-body dynamics of the $a_1(1260)$ resonance from lattice QCD

Three-body dynamics of the $a_1(1260)$ resonance from lattice QCD

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