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Title: Study of decuplet baryon resonances from lattice QCD

Abstract

Here, a lattice QCD study of the strong decay width and coupling constant of decuplet baryons to an octet baryon-pion state is presented. The transfer matrix method is used to obtain the overlap of lattice states with decuplet baryon quantum numbers on the one hand and octet baryon-pion quantum numbers on the other as an approximation of the matrix element of the corresponding transition. By making use of leading-order effective field theory, the coupling constants as well as the widths for the various decay channels are determined. The transitions studied are Δ → π N, Σ* → Λπ, Σ* → Σπ and Ξ* → Ξπ. We obtain results for two ensembles of N f = 2 + 1 dynamical fermion configurations: one using domain wall valence quarks on a staggered sea at a pion mass of 350 MeVand a box size of 3.4 fm and a second one using domain wall sea and valence quarks at pion mass 180 MeV and box size 4.5 fm.

Authors:
 [1];  [2];  [3];  [2];  [4]
  1. Univ. of Cyprus, Nicosia (Cyprus); Cyprus Institute, Nicosia (Cyprus)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  3. Cyprus Institute, Nicosia (Cyprus); Rheinische Friedrich-Wilhelms-Univ. Bonn, Bonn (Germany)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Univ. of California, Oakland, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1505607
Alternate Identifier(s):
OSTI ID: 1259343
Grant/Contract Number:  
SC0011090; PITN-GA-2009-238353; ER41888; AC02- 05CH11231; 2011040546; RI-211528; FP7-261557; 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

Alexandrou, C., Negele, J. W., Petschlies, M., Pochinsky, A. V., and Syritsyn, S. N. Study of decuplet baryon resonances from lattice QCD. United States: N. p., 2016. Web. doi:10.1103/physrevd.93.114515.
Alexandrou, C., Negele, J. W., Petschlies, M., Pochinsky, A. V., & Syritsyn, S. N. Study of decuplet baryon resonances from lattice QCD. United States. doi:10.1103/physrevd.93.114515.
Alexandrou, C., Negele, J. W., Petschlies, M., Pochinsky, A. V., and Syritsyn, S. N. Thu . "Study of decuplet baryon resonances from lattice QCD". United States. doi:10.1103/physrevd.93.114515. https://www.osti.gov/servlets/purl/1505607.
@article{osti_1505607,
title = {Study of decuplet baryon resonances from lattice QCD},
author = {Alexandrou, C. and Negele, J. W. and Petschlies, M. and Pochinsky, A. V. and Syritsyn, S. N.},
abstractNote = {Here, a lattice QCD study of the strong decay width and coupling constant of decuplet baryons to an octet baryon-pion state is presented. The transfer matrix method is used to obtain the overlap of lattice states with decuplet baryon quantum numbers on the one hand and octet baryon-pion quantum numbers on the other as an approximation of the matrix element of the corresponding transition. By making use of leading-order effective field theory, the coupling constants as well as the widths for the various decay channels are determined. The transitions studied are Δ → πN, Σ* → Λπ, Σ* → Σπ and Ξ* → Ξπ. We obtain results for two ensembles of Nf = 2 + 1 dynamical fermion configurations: one using domain wall valence quarks on a staggered sea at a pion mass of 350 MeVand a box size of 3.4 fm and a second one using domain wall sea and valence quarks at pion mass 180 MeV and box size 4.5 fm.},
doi = {10.1103/physrevd.93.114515},
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