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Continuum limit of baryon-baryon scattering with SU(3) flavor symmetry

We report a study of the scattering of two octet baryons using lattice QCD. The baryon-baryon spectrum is computed using distillation on eight lattice ensembles spanning six lattice spacings and multiple volumes, all at the SU(3) flavor symmetric point with $m_\pi=m_K\approx 420$ MeV. Using finite-v...

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Detalles Bibliográficos
Autores principales: Green, Jeremy R., Hanlon, Andrew D., Junnarkar, Parikshit M., Wittig, Hartmut
Lenguaje:eng
Publicado: 2021
Materias:
Acceso en línea:https://dx.doi.org/10.22323/1.396.0294
http://cds.cern.ch/record/2792137
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author Green, Jeremy R.
Hanlon, Andrew D.
Junnarkar, Parikshit M.
Wittig, Hartmut
author_facet Green, Jeremy R.
Hanlon, Andrew D.
Junnarkar, Parikshit M.
Wittig, Hartmut
author_sort Green, Jeremy R.
collection CERN
description We report a study of the scattering of two octet baryons using lattice QCD. The baryon-baryon spectrum is computed using distillation on eight lattice ensembles spanning six lattice spacings and multiple volumes, all at the SU(3) flavor symmetric point with $m_\pi=m_K\approx 420$ MeV. Using finite-volume quantization conditions, we determine the scattering phase shift and the presence of bound states. Focusing on the $H$ dibaryon, our results show large discretization effects: in the continuum, the binding energy is $B_H=4.56\pm1.13\pm0.63$ MeV, whereas on our coarsest lattice spacing this is larger by a factor of about 7.5. We also present preliminary results for a $D$-wave phase shift and for the spectrum in the nucleon-nucleon ${}^1S_0$ channel.
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institution Organización Europea para la Investigación Nuclear
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publishDate 2021
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spelling cern-27921372023-09-01T04:28:26Zdoi:10.22323/1.396.0294http://cds.cern.ch/record/2792137engGreen, Jeremy R.Hanlon, Andrew D.Junnarkar, Parikshit M.Wittig, HartmutContinuum limit of baryon-baryon scattering with SU(3) flavor symmetryhep-latParticle Physics - LatticeWe report a study of the scattering of two octet baryons using lattice QCD. The baryon-baryon spectrum is computed using distillation on eight lattice ensembles spanning six lattice spacings and multiple volumes, all at the SU(3) flavor symmetric point with $m_\pi=m_K\approx 420$ MeV. Using finite-volume quantization conditions, we determine the scattering phase shift and the presence of bound states. Focusing on the $H$ dibaryon, our results show large discretization effects: in the continuum, the binding energy is $B_H=4.56\pm1.13\pm0.63$ MeV, whereas on our coarsest lattice spacing this is larger by a factor of about 7.5. We also present preliminary results for a $D$-wave phase shift and for the spectrum in the nucleon-nucleon ${}^1S_0$ channel.We report a study of the scattering of two octet baryons using lattice QCD. The baryon-baryon spectrum is computed using distillation on eight lattice ensembles spanning six lattice spacings and multiple volumes, all at the SU(3) flavor symmetric point with $m_\pi=m_K\approx 420$ MeV. Using finite-volume quantization conditions, we determine the scattering phase shift and the presence of bound states. Focusing on the $H$ dibaryon, our results show large discretization effects: in the continuum, the binding energy is $B_H=4.56\pm1.13\pm0.63$ MeV, whereas on our coarsest lattice spacing this is larger by a factor of about 7.5. We also present preliminary results for a $D$-wave phase shift and for the spectrum in the nucleon-nucleon ${}^1S_0$ channel.arXiv:2111.09675oai:cds.cern.ch:27921372021-11-18
spellingShingle hep-lat
Particle Physics - Lattice
Green, Jeremy R.
Hanlon, Andrew D.
Junnarkar, Parikshit M.
Wittig, Hartmut
Continuum limit of baryon-baryon scattering with SU(3) flavor symmetry
title Continuum limit of baryon-baryon scattering with SU(3) flavor symmetry
title_full Continuum limit of baryon-baryon scattering with SU(3) flavor symmetry
title_fullStr Continuum limit of baryon-baryon scattering with SU(3) flavor symmetry
title_full_unstemmed Continuum limit of baryon-baryon scattering with SU(3) flavor symmetry
title_short Continuum limit of baryon-baryon scattering with SU(3) flavor symmetry
title_sort continuum limit of baryon-baryon scattering with su(3) flavor symmetry
topic hep-lat
Particle Physics - Lattice
url https://dx.doi.org/10.22323/1.396.0294
http://cds.cern.ch/record/2792137
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