Chiral Extrapolations of the ρ(770) Meson in Nf = 2 + 1 Lattice QCD Simulations
Instituto de Física, Universidade de São Paulo, São Paulo, 05508-090, Brazil
2 The George Washington University, Washington, DC 20052, USA
3 Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
* The authors thank the Hadron Spectrum Collaboration, J. Bulava and L. Leskovec for providing the results of the lattice simulations including covariance matrices. e-mail: email@example.com
Published online: 26 March 2018
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.
M. D. gratefully acknowledges support from the NSF/Career award no. 1452055 and from the U.S. Department of Energy, Office of Nuclear Physics under Contract No. DE-AC05-06OR23177 and grant no. DE-SC0016582.
A.A. is supported in part by the National Science Foundation CAREER grant PHY-1151648 and by U.S. Department of Energy grant DE-FG02-95ER40907. A.A. gratefully acknowledges the hospitality of the Physics Departments at the Universities of Maryland and Kentucky, and the Albert Einstein Center at the University of Bern.
© The Authors, published by EDP Sciences, 2018
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