String breaking by light and strange quarks in QCD
The energy spectrum of a system containing a static quark anti-quark pair is computed for a wide range of source separations using lattice QCD with Nf=2+1 dynamical flavours. By employing a variational method with a basis including operators resembling both the gluon string and systems of two separa...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019-06-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269319303284 |
| _version_ | 1818158808760844288 |
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| author | John Bulava Ben Hörz Francesco Knechtli Vanessa Koch Graham Moir Colin Morningstar Mike Peardon |
| author_facet | John Bulava Ben Hörz Francesco Knechtli Vanessa Koch Graham Moir Colin Morningstar Mike Peardon |
| author_sort | John Bulava |
| collection | DOAJ |
| description | The energy spectrum of a system containing a static quark anti-quark pair is computed for a wide range of source separations using lattice QCD with Nf=2+1 dynamical flavours. By employing a variational method with a basis including operators resembling both the gluon string and systems of two separated static mesons, the first three energy levels are determined up to and beyond the distance where it is energetically favourable for the vacuum to screen the static sources through light- or strange-quark pair creation, enabling both these screening phenomena to be observed. The separation dependence of the energy spectrum is reliably parameterised over this saturation region with a simple model which can be used as input for subsequent investigations of quarkonia above threshold and heavy-light and heavy-strange coupled-channel meson scattering. Keywords: Lattice QCD, String breaking, Heavy quarks |
| first_indexed | 2024-12-11T15:35:59Z |
| format | Article |
| id | doaj.art-afa47cfed081416cab5bc041a3bebf39 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-11T15:35:59Z |
| publishDate | 2019-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-afa47cfed081416cab5bc041a3bebf392022-12-22T00:59:57ZengElsevierPhysics Letters B0370-26932019-06-01793493498String breaking by light and strange quarks in QCDJohn Bulava0Ben Hörz1Francesco Knechtli2Vanessa Koch3Graham Moir4Colin Morningstar5Mike Peardon6CP3-Origins, University of Southern Denmark, Campusvej 55, 5230 Odense M, DenmarkPRISMA Cluster of Excellence and Institute for Nuclear Physics, Johannes Gutenberg-Universität, 55099 Mainz, Germany; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USADept. of Physics, University of Wuppertal, Gaussstrasse 20, D-42119, Germany; Corresponding author at: Dept. of Physics, University of Wuppertal, Gaussstrasse 20, D-42119, Germany.Dept. of Physics, University of Wuppertal, Gaussstrasse 20, D-42119, Germany; School of Mathematics, Trinity College Dublin, Dublin 2, IrelandDept. of Mathematics, Hurstpierpoint College, College Lane, Hassocks, West Sussex, BN6 9JS, United KingdomDept. of Physics, Carnegie Mellon University, Pittsburgh, PA 15213, USASchool of Mathematics, Trinity College Dublin, Dublin 2, IrelandThe energy spectrum of a system containing a static quark anti-quark pair is computed for a wide range of source separations using lattice QCD with Nf=2+1 dynamical flavours. By employing a variational method with a basis including operators resembling both the gluon string and systems of two separated static mesons, the first three energy levels are determined up to and beyond the distance where it is energetically favourable for the vacuum to screen the static sources through light- or strange-quark pair creation, enabling both these screening phenomena to be observed. The separation dependence of the energy spectrum is reliably parameterised over this saturation region with a simple model which can be used as input for subsequent investigations of quarkonia above threshold and heavy-light and heavy-strange coupled-channel meson scattering. Keywords: Lattice QCD, String breaking, Heavy quarkshttp://www.sciencedirect.com/science/article/pii/S0370269319303284 |
| spellingShingle | John Bulava Ben Hörz Francesco Knechtli Vanessa Koch Graham Moir Colin Morningstar Mike Peardon String breaking by light and strange quarks in QCD Physics Letters B |
| title | String breaking by light and strange quarks in QCD |
| title_full | String breaking by light and strange quarks in QCD |
| title_fullStr | String breaking by light and strange quarks in QCD |
| title_full_unstemmed | String breaking by light and strange quarks in QCD |
| title_short | String breaking by light and strange quarks in QCD |
| title_sort | string breaking by light and strange quarks in qcd |
| url | http://www.sciencedirect.com/science/article/pii/S0370269319303284 |
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