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

doi:10.1103/PhysRevD.96.034520

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

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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.

Authors:

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

Publication Date:: 2017-08-24

Report Number(s):: JLAB-THY-17-2445; DOE/OR/23177-4126; arXiv:1704.06248
Journal ID: ISSN 2470-0010; PRVDAQ

Grant/Contract Number:: 1452055; AC05-06OR23177; SC0016582; FG02-95ER40907; MA 7156/1

Type:: Accepted Manuscript

Journal Name:: Physical Review D

Additional Journal Information:: Journal Volume: 96; Journal Issue: 3; Journal ID: ISSN 2470-0010

Publisher:: American Physical Society (APS)

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

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

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

OSTI Identifier:: 1377015

Alternate Identifier(s):: OSTI ID: 1376956


                    Hu, B., Molina, R., Döring, M., Mai, M., and Alexandru, A.. Chiral extrapolations of the ρ(770) meson in Nf=2+1 lattice QCD simulations.  United States: N. p.,  
        Web.  doi:10.1103/PhysRevD.96.034520.

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                    Hu, B., Molina, R., Döring, M., Mai, M., & Alexandru, A.. Chiral extrapolations of the ρ(770) meson in Nf=2+1 lattice QCD simulations.  United States.  doi:10.1103/PhysRevD.96.034520.

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                    Hu, B., Molina, R., Döring, M., Mai, M., and Alexandru, A.. 2017.  
        "Chiral extrapolations of the ρ(770) meson in Nf=2+1 lattice QCD simulations".  United States.  
        doi:10.1103/PhysRevD.96.034520.  https://www.osti.gov/servlets/purl/1377015.

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@article{osti_1377015,

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

  author       = {Hu, B. and Molina, R. and Döring, M. and Mai, M. and Alexandru, A.},

  abstractNote = {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.},

  doi          = {10.1103/PhysRevD.96.034520},

  journal      = {Physical Review D},

  number       = 3,

  volume       = 96,

  place        = {United States},

  year         = {2017},

  month        = {8}

}

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10.1103/PhysRevD.96.034520
https://doi.org/10.1103/PhysRevD.96.034520

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

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