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Title: Low energy constants of S U ( 2 ) partially quenched chiral perturbation theory from N f =2+1 domain wall QCD

Abstract

Here, we have performed fits of the pseudoscalar masses and decay constants, from a variety of the RBC-UKQCD Collaboration’s domain wall fermion ensembles, to SU(2) partially quenched chiral perturbation theory at next-to-leading order (NLO) and next-to-next-to-leading order (NNLO). We report values for 9 NLO and 8 linearly independent combinations of NNLO partially quenched low-energy constants, which we compare to other lattice and phenomenological determinations. We discuss the size of successive terms in the chiral expansion and use our large set of low-energy constants to make predictions for mass splittings due to QCD isospin-breaking effects and the S-wave ππ scattering lengths. Lastly, we conclude that, for the range of pseudoscalar masses explored in this work, 115 MeV≲mPS≲430 MeV, the NNLO SU(2) expansion is quite robust and can fit lattice data with percent-scale accuracy.

Authors:
 [1];  [2];  [3];  [4];  [5];  [6];  [2];  [2];  [2];  [7];  [5];  [5]
  1. Univ. of Edinburgh, Scotland (United Kingdom). School of Physics & Astronomy
  2. Columbia Univ., New York, NY (United States). Dept. of Physics
  3. Plymouth Univ., Plymouth (United Kingdom). Centre for Mathematical Sciences
  4. Brookhaven National Lab. (BNL), Upton, NY (United States). Dept. of Physics
  5. Univ. of Southampton (United Kingdom). School of Physics and Astronomy
  6. Brookhaven National Lab. (BNL), Upton, NY (United States). RIKEN Research Center
  7. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan). Theory Center; Graduate Univ. for Advanced Studies (SOKENDAI), Hayama, Kanagawa (Japan); Brookhaven National Lab. (BNL), Upton, NY (United States). RIKEN Research Center
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States). RIKEN Research Center
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP); European Research Council (ERC)
OSTI Identifier:
1336190
Alternate Identifier(s):
OSTI ID: 1242596
Report Number(s):
BNL-112664-2016-JA
Journal ID: ISSN 2470-0010; PRVDAQ; R&D Project: PO-3
Grant/Contract Number:  
SC0012704; SC0011941; AC- 02-98CH10886; RPG-2014-118; 279757; ST/L000296/1; ST/M006530/1; ST/L000458/1; ST/K005790/1; AC-02-98CH10886(BNL)
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 93; Journal Issue: 5; 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; Riken BNL Research Center

Citation Formats

Boyle, P. A., Christ, N. H., Garron, N., Jung, C., Jüttner, A., Kelly, C., Mawhinney, R. D., McGlynn, G., Murphy, D. J., Ohta, S., Portelli, A., and Sachrajda, C. T. Low energy constants of SU(2) partially quenched chiral perturbation theory from Nf=2+1 domain wall QCD. United States: N. p., 2016. Web. doi:10.1103/PhysRevD.93.054502.
Boyle, P. A., Christ, N. H., Garron, N., Jung, C., Jüttner, A., Kelly, C., Mawhinney, R. D., McGlynn, G., Murphy, D. J., Ohta, S., Portelli, A., & Sachrajda, C. T. Low energy constants of SU(2) partially quenched chiral perturbation theory from Nf=2+1 domain wall QCD. United States. https://doi.org/10.1103/PhysRevD.93.054502
Boyle, P. A., Christ, N. H., Garron, N., Jung, C., Jüttner, A., Kelly, C., Mawhinney, R. D., McGlynn, G., Murphy, D. J., Ohta, S., Portelli, A., and Sachrajda, C. T. Wed . "Low energy constants of SU(2) partially quenched chiral perturbation theory from Nf=2+1 domain wall QCD". United States. https://doi.org/10.1103/PhysRevD.93.054502. https://www.osti.gov/servlets/purl/1336190.
@article{osti_1336190,
title = {Low energy constants of SU(2) partially quenched chiral perturbation theory from Nf=2+1 domain wall QCD},
author = {Boyle, P. A. and Christ, N. H. and Garron, N. and Jung, C. and Jüttner, A. and Kelly, C. and Mawhinney, R. D. and McGlynn, G. and Murphy, D. J. and Ohta, S. and Portelli, A. and Sachrajda, C. T.},
abstractNote = {Here, we have performed fits of the pseudoscalar masses and decay constants, from a variety of the RBC-UKQCD Collaboration’s domain wall fermion ensembles, to SU(2) partially quenched chiral perturbation theory at next-to-leading order (NLO) and next-to-next-to-leading order (NNLO). We report values for 9 NLO and 8 linearly independent combinations of NNLO partially quenched low-energy constants, which we compare to other lattice and phenomenological determinations. We discuss the size of successive terms in the chiral expansion and use our large set of low-energy constants to make predictions for mass splittings due to QCD isospin-breaking effects and the S-wave ππ scattering lengths. Lastly, we conclude that, for the range of pseudoscalar masses explored in this work, 115 MeV≲mPS≲430 MeV, the NNLO SU(2) expansion is quite robust and can fit lattice data with percent-scale accuracy.},
doi = {10.1103/PhysRevD.93.054502},
journal = {Physical Review D},
number = 5,
volume = 93,
place = {United States},
year = {Wed Mar 09 00:00:00 EST 2016},
month = {Wed Mar 09 00:00:00 EST 2016}
}

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Cited by: 38 works
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Works referencing / citing this record:

Large $$N_c$$Nc scaling of meson masses and decay constants
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