Chiral Extrapolations of the $\boldsymbol{ρ(770)}$ Meson in $\mathbf{N_f=2+1}$ Lattice QCD Simulations

Molina, Raquel; Hu, Bitao; Doering, Michael; Mai, Maxim; Alexandru, Andrei

doi:10.1051/epjconf/201817505002

Chiral Extrapolations of the $$\boldsymbol{ρ(770)}$$ Meson in $$\mathbf{N_f=2+1}$$ Lattice QCD Simulations

Conference · Sun Apr 01 04:00:00 EDT 2018 · EPJ Web of Conferences

DOI:https://doi.org/10.1051/epjconf/201817505002· OSTI ID:1434235

Molina, Raquel ^[1]; Hu, Bitao ^[2]; Doering, Michael ^[3]; Mai, Maxim ^[2]; Alexandru, Andrei ^[2]

Univ. of Sao Paulo (Brazil)
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)

Several lattice QCD simulations of meson-meson scattering in p-wave and Isospin = 1 in Nf = 2 + 1 flavours have been carried out recently. Unitarized Chiral Perturbation Theory is used to perform extrapolations to the physical point. In contrast to previous findings on the analyses of Nf = 2 lattice data, where most of the data seems to be in agreement, some discrepancies are detected in the Nf = 2 + 1 lattice data analyses, which could be due to different masses of the strange quark, meson decay constants, initial constraints in the simulation, or other lattice artifacts. In addition, the low-energy constants are compared to the ones from a recent analysis of Nf = 2 lattice 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)

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

OSTI ID:: 1434235

Report Number(s):: JLAB-THY-18-2685; DOE/OR/23177-4417

Conference Information:: Journal Name: EPJ Web of Conferences Journal Volume: 175

Country of Publication:: United States

Language:: English

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