Spectroscopy of light tetraquark states

Sasa Prelovsek; Christian B. Lang; Markus Limmer; Daniel Mohler; Terrence Draper; Keh Fei Liu; Nilmani Mathur

Spectroscopy of light tetraquark states

Sasa Prelovsek
, Christian B. Lang
, Markus Limmer
, Daniel Mohler
, Terrence Draper
, Keh Fei Liu
, Nilmani Mathur

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

We address the question whether the lightest scalar mesons s and k are tetraquarks, as is strongly supported by many phenomenological studies. We present a search for possible light tetraquark states with JPC = 0+ and I = 0; 1=2; 3=2; 2 on the lattice. The spectrum is determined using the generalized eigenvalue method with a number of tetraquark interpolators at the source and the sink. In all the channels, we unavoidably find lowest scattering states p(k)p(k) or K(k)p(k) with back-to-back momentum k=0; 2p L ; :: . However, we find an additional light state in the I =0 and I = 1=2 channels, which may be related to the observed resonances s and k with a strong tetraquark component. In the exotic repulsive channels I = 2 and I = 3=2, where no resonance is observed, we find no light state in addition to the scattering states.

Original language	English
Journal	Proceedings of Science
Volume	91
State	Published - 2009
Event	27th International Symposium on Lattice Field Theory, LAT 2009 - Beijing, China Duration: Jul 26 2009 → Jul 31 2009

Bibliographical note

Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.

Funding

We would like to thank C. Gattringer, C. Morningstar, R. Edwards, J. Juge, M. Savage, W. Det-mold and M. Komelj for valuable discussions. The configurations with dynamical quarks have been produced by the BGR-collaboration on the SGI Altix 4700 of the Leibniz-Rechenzentrum Munich. This work is supported by the Slovenian Research Agency, by the European RTN network FLA- VIAnet (contract number MRTN-CT-035482), by the Slovenian-Austrian bilateral project (contract number BI-AT/09-10-012), by the USA DOE Grant DE-FG05-84ER40154 and by the Austrian grant FWF DK W1203-N08.

Funders	Funder number
Javna Agencija za Raziskovalno Dejavnost RS
Slovenian-Austrian bilateral project	BI-AT/09-10-012
U.S. Department of Energy Oak Ridge National Laboratory U.S. Department of Energy National Science Foundation National Energy Research Scientific Computing Center	FWF DK W1203-N08, DE-FG05-84ER40154

ASJC Scopus subject areas

General

Cite this

@article{3894d362ea064c88968bedd208c3191e,

title = "Spectroscopy of light tetraquark states",

abstract = "We address the question whether the lightest scalar mesons s and k are tetraquarks, as is strongly supported by many phenomenological studies. We present a search for possible light tetraquark states with JPC = 0+ and I = 0; 1=2; 3=2; 2 on the lattice. The spectrum is determined using the generalized eigenvalue method with a number of tetraquark interpolators at the source and the sink. In all the channels, we unavoidably find lowest scattering states p(k)p(k) or K(k)p(k) with back-to-back momentum k=0; 2p L ; :: . However, we find an additional light state in the I =0 and I = 1=2 channels, which may be related to the observed resonances s and k with a strong tetraquark component. In the exotic repulsive channels I = 2 and I = 3=2, where no resonance is observed, we find no light state in addition to the scattering states.",

author = "Sasa Prelovsek and Lang, \{Christian B.\} and Markus Limmer and Daniel Mohler and Terrence Draper and Liu, \{Keh Fei\} and Nilmani Mathur",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.; 27th International Symposium on Lattice Field Theory, LAT 2009 ; Conference date: 26-07-2009 Through 31-07-2009",

year = "2009",

language = "English",

volume = "91",

}

TY - JOUR

T1 - Spectroscopy of light tetraquark states

AU - Prelovsek, Sasa

AU - Lang, Christian B.

AU - Limmer, Markus

AU - Mohler, Daniel

AU - Draper, Terrence

AU - Liu, Keh Fei

AU - Mathur, Nilmani

N1 - Publisher Copyright: © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.

PY - 2009

Y1 - 2009

N2 - We address the question whether the lightest scalar mesons s and k are tetraquarks, as is strongly supported by many phenomenological studies. We present a search for possible light tetraquark states with JPC = 0+ and I = 0; 1=2; 3=2; 2 on the lattice. The spectrum is determined using the generalized eigenvalue method with a number of tetraquark interpolators at the source and the sink. In all the channels, we unavoidably find lowest scattering states p(k)p(k) or K(k)p(k) with back-to-back momentum k=0; 2p L ; :: . However, we find an additional light state in the I =0 and I = 1=2 channels, which may be related to the observed resonances s and k with a strong tetraquark component. In the exotic repulsive channels I = 2 and I = 3=2, where no resonance is observed, we find no light state in addition to the scattering states.

AB - We address the question whether the lightest scalar mesons s and k are tetraquarks, as is strongly supported by many phenomenological studies. We present a search for possible light tetraquark states with JPC = 0+ and I = 0; 1=2; 3=2; 2 on the lattice. The spectrum is determined using the generalized eigenvalue method with a number of tetraquark interpolators at the source and the sink. In all the channels, we unavoidably find lowest scattering states p(k)p(k) or K(k)p(k) with back-to-back momentum k=0; 2p L ; :: . However, we find an additional light state in the I =0 and I = 1=2 channels, which may be related to the observed resonances s and k with a strong tetraquark component. In the exotic repulsive channels I = 2 and I = 3=2, where no resonance is observed, we find no light state in addition to the scattering states.

UR - https://www.scopus.com/pages/publications/85055259913

UR - https://www.scopus.com/pages/publications/85055259913#tab=citedBy

M3 - Conference article

AN - SCOPUS:85055259913

VL - 91

JO - Proceedings of Science

JF - Proceedings of Science

T2 - 27th International Symposium on Lattice Field Theory, LAT 2009

Y2 - 26 July 2009 through 31 July 2009

ER -

Spectroscopy of light tetraquark states

Abstract

Bibliographical note

Funding

ASJC Scopus subject areas

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