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Title: Tetraquark bound states in the heavy-light heavy-light system

Abstract

A calculation of the interaction potential of a heavy-light heavy-light (HLHL) system in lattice QCD is used to study the existence of tetraquark bound states. The interaction potential of the tetraquark system is calculated on the lattice with 2+1 flavours of dynamical fermions with lattice interpolating fields constructed using colorwave propagators. These propagators provide a new method for constructing all-to-all spatially smeared the interpolating fields, a technique which allows for a better overlap with the ground state wavefunction as well as reduced statistical noise. Lattice HLHL potentials are extracted for 24 distinct channels, and are fit with a phenomenological non-relativistic quark model potential, from which a determination of the existence of bound states is made via numerical solution of the two body radial Schroedinger equation.

Authors:
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1057381
Report Number(s):
JLAB-THY-12-1643; DOE/OR/23177-2339; arXiv:1210.1953
DOE Contract Number:  
AC05-06OR23177
Resource Type:
Journal Article
Journal Name:
Phys. Rev. D
Additional Journal Information:
Journal Volume: 86; Journal Issue: 11
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Konstantinos Orginos, Zachary Brown. Tetraquark bound states in the heavy-light heavy-light system. United States: N. p., 2012. Web. doi:10.1103/PhysRevD.86.114506.
Konstantinos Orginos, Zachary Brown. Tetraquark bound states in the heavy-light heavy-light system. United States. doi:10.1103/PhysRevD.86.114506.
Konstantinos Orginos, Zachary Brown. Sat . "Tetraquark bound states in the heavy-light heavy-light system". United States. doi:10.1103/PhysRevD.86.114506.
@article{osti_1057381,
title = {Tetraquark bound states in the heavy-light heavy-light system},
author = {Konstantinos Orginos, Zachary Brown},
abstractNote = {A calculation of the interaction potential of a heavy-light heavy-light (HLHL) system in lattice QCD is used to study the existence of tetraquark bound states. The interaction potential of the tetraquark system is calculated on the lattice with 2+1 flavours of dynamical fermions with lattice interpolating fields constructed using colorwave propagators. These propagators provide a new method for constructing all-to-all spatially smeared the interpolating fields, a technique which allows for a better overlap with the ground state wavefunction as well as reduced statistical noise. Lattice HLHL potentials are extracted for 24 distinct channels, and are fit with a phenomenological non-relativistic quark model potential, from which a determination of the existence of bound states is made via numerical solution of the two body radial Schroedinger equation.},
doi = {10.1103/PhysRevD.86.114506},
journal = {Phys. Rev. D},
number = 11,
volume = 86,
place = {United States},
year = {2012},
month = {12}
}