| Issue |
EPJ Web Conf.
Volume 175, 2018
35th International Symposium on Lattice Field Theory (Lattice 2017)
|
|
|---|---|---|
| Article Number | 05002 | |
| Number of page(s) | 8 | |
| Section | 5 Hadron Spectroscopy and Interactions | |
| DOI | https://doi.org/10.1051/epjconf/201817505002 | |
| Published online | 26 March 2018 | |
https://doi.org/10.1051/epjconf/201817505002
Chiral Extrapolations of the ρ(770) Meson in Nf = 2 + 1 Lattice QCD Simulations
1
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: ramope@if.usp.br
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
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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