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Title: Finite-Volume Spectrum of π + π + and π + π + π + Systems

Journal Article · · Physical Review Letters

Here, the ab initio understanding of hadronic three-body systems above threshold, such as exotic resonances or the baryon spectrum, requires the mapping of the finite-volume eigenvalue spectrum, produced in lattice QCD calculations, to the infinite volume. We present the first application of such a formalism to a physical system in form of three interacting positively charged pions. The results for the ground state energies agree with the available lattice QCD results by the NPLQCD collaboration at unphysical pion masses. Extrapolations to physical pion masses are performed using input from effective field theory. The excited energy spectrum is predicted. This demonstrates the feasibility to determine three-body amplitudes above threshold from lattice QCD, including resonance properties of axial mesons, exotics, and excited baryons.

Research Organization:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
AC05-06OR23177; SC0016582; PHY-1452055; MA 7156/1
OSTI ID:
1494650
Alternate ID(s):
OSTI ID: 1494922
Report Number(s):
JLAB-THY-18-2767; DOE/OR/23177-4497; arXiv:1807.04746; PRLTAO; 062503
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Vol. 122 Journal Issue: 6; ISSN 0031-9007
Publisher:
American Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 72 works
Citation information provided by
Web of Science

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Cited By (3)

Lattice model of heavy-light three-body system journal February 2020
Opportunities for Lattice QCD in quark and lepton flavor physics journal November 2019
Hadrons and nuclei journal November 2019

Figures / Tables (2)


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