Chiral extrapolations of the ρ(770) meson in Nf=2+1 lattice QCD simulations

Hu, B.; Molina, R.; Döring, M.; Mai, M.; Alexandru, A.

doi:10.1103/PhysRevD.96.034520

Title: Chiral extrapolations of the $ρ (770)$ meson in $N_{f} = 2 + 1$ lattice QCD simulations

Journal Article · 23 August 2017 · Physical Review D

DOI: https://doi.org/10.1103/PhysRevD.96.034520 · OSTI ID:1377015

Hu, B. ^[1]; Molina, R. ^[1]; Döring, M. ^[2]; Mai, M. ^[1]; Alexandru, A. ^[3]

George Washington Univ., Washington, DC (United States)
George Washington Univ., Washington, DC (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
George Washington Univ., Washington, DC (United States); Univ. of Bern (Switzerland). Albert Einstein Center for Fundamental Physics

Recent $$N_f=2+1$$ lattice data for meson-meson scattering in $$p$$-wave and isospin $I=1$ are analyzed using a unitarized model inspired by Chiral Perturbation Theory in the inverse-amplitude formulation for two and three flavors. We perform chiral extrapolations that postdict phase shifts extracted from experiment quite well. Additionally, the low-energy constants are compared to the ones from a recent analysis of $$N_f=2$$ lattice QCD simulations to check for the consistency of the hadronic model used here. Some inconsistencies are detected in the fits to $$N_f=2+1$$ data, in contrast to the previous analysis of $$N_f=2$$ data.

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Research Organization:: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); National Science Foundation (NSF)

Grant/Contract Number:: AC05-06OR23177; SC0016582; FG02-95ER40907

OSTI ID:: 1377015

Alternate ID(s):: OSTI ID: 1376956

Report Number(s):: JLAB-THY--17-2445; DOE/OR/23177--4126; arXiv:1704.06248

Journal Information:: Physical Review D, Journal Name: Physical Review D Journal Issue: 3 Vol. 96; ISSN PRVDAQ; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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