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Title: Low energy scattering phase shifts for meson-baryon systems

Abstract

In this study, we calculate meson-baryon scattering phase shifts in four channels using lattice QCD methods. From a set of calculations at four volumes, corresponding to spatial sizes of 2, 2.5, 3, and 4 fm, and a pion mass of m π ~ 390 MeV, we determine the scattering lengths and effective ranges for these systems at the corresponding quark masses. We also perform the calculation at a lighter quark mass, m π ~ 230 MeV, on the largest volume. Using these determinations, along with those in previous work, we perform a chiral extrapolation of the scattering lengths to the physical point after correcting for the effective range contributions using the multivolume calculations performed at m π ~ 390 MeV.

Authors:
 [1];  [2]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Univ. of California, Berkeley, CA (United States)
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Univ. of California, Berkeley, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1505605
Alternate Identifier(s):
OSTI ID: 1257669
Grant/Contract Number:  
SC0010495; SC00046548; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 93; Journal Issue: 11; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Detmold, William, and Nicholson, Amy N. Low energy scattering phase shifts for meson-baryon systems. United States: N. p., 2016. Web. doi:10.1103/physrevd.93.114511.
Detmold, William, & Nicholson, Amy N. Low energy scattering phase shifts for meson-baryon systems. United States. doi:10.1103/physrevd.93.114511.
Detmold, William, and Nicholson, Amy N. Fri . "Low energy scattering phase shifts for meson-baryon systems". United States. doi:10.1103/physrevd.93.114511. https://www.osti.gov/servlets/purl/1505605.
@article{osti_1505605,
title = {Low energy scattering phase shifts for meson-baryon systems},
author = {Detmold, William and Nicholson, Amy N.},
abstractNote = {In this study, we calculate meson-baryon scattering phase shifts in four channels using lattice QCD methods. From a set of calculations at four volumes, corresponding to spatial sizes of 2, 2.5, 3, and 4 fm, and a pion mass of mπ ~ 390 MeV, we determine the scattering lengths and effective ranges for these systems at the corresponding quark masses. We also perform the calculation at a lighter quark mass, mπ ~ 230 MeV, on the largest volume. Using these determinations, along with those in previous work, we perform a chiral extrapolation of the scattering lengths to the physical point after correcting for the effective range contributions using the multivolume calculations performed at mπ ~ 390 MeV.},
doi = {10.1103/physrevd.93.114511},
journal = {Physical Review D},
number = 11,
volume = 93,
place = {United States},
year = {2016},
month = {6}
}

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Cited by: 3 works
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Works referenced in this record:

Resonance properties from the finite-volume energy spectrum
journal, August 2008