Antiheavy-Antiheavy-Light-Light Four-Quark Bound States

Martin Pflaumer; Constantia Alexandrou; Jacob Finkenrath; Theodoros Leontiou; Stefan Meinel; Marc Wagner

Antiheavy-Antiheavy-Light-Light Four-Quark Bound States

Martin Pflaumer, Constantia Alexandrou, Jacob Finkenrath, Theodoros Leontiou, Stefan Meinel, Marc Wagner

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

Abstract

We present our recent results on antiheavy-antiheavy-light-light tetraquark systems using lattice QCD. Our study of the b̄b̄us four-quark system with quantum numbers J^P = 1⁺ and the b̄c̄ud four-quark systems with I(J^P) = 0(0⁺) and I(J^P) = 0(1⁺) utilizes scattering operators at the sink to improve the extraction of the low-lying energy levels. We found a bound state for b̄b̄us with E_{bind, b̄b̄us} = (-86 ± 22 ± 10) MeV, but no indication for a bound state in both b̄c̄ud channels. Moreover, we show preliminary results for b̄b̄ud with I(J^P) = 0(1⁺), where we used scattering operators both at the sink and the source. We found a bound state and determined its infinite-volume binding energy with a scattering analysis, resulting in E_{bind, b̄b̄ud} = (-103 ± 8) MeV.

Original language	English (US)
Article number	075
Journal	Proceedings of Science
Volume	430
State	Published - Apr 6 2023
Externally published	Yes
Event	39th International Symposium on Lattice Field Theory, LATTICE 2022 - Bonn, Germany Duration: Aug 8 2022 → Aug 13 2022

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title = "Antiheavy-Antiheavy-Light-Light Four-Quark Bound States",

abstract = "We present our recent results on antiheavy-antiheavy-light-light tetraquark systems using lattice QCD. Our study of the {\=b}{\=b}us four-quark system with quantum numbers JP = 1+ and the {\=b}{\=c}ud four-quark systems with I(JP) = 0(0+) and I(JP) = 0(1+) utilizes scattering operators at the sink to improve the extraction of the low-lying energy levels. We found a bound state for {\=b}{\=b}us with Ebind, {\=b}{\=b}us = (-86 ± 22 ± 10) MeV, but no indication for a bound state in both {\=b}{\=c}ud channels. Moreover, we show preliminary results for {\=b}{\=b}ud with I(JP) = 0(1+), where we used scattering operators both at the sink and the source. We found a bound state and determined its infinite-volume binding energy with a scattering analysis, resulting in Ebind, {\=b}{\=b}ud = (-103 ± 8) MeV.",

author = "Martin Pflaumer and Constantia Alexandrou and Jacob Finkenrath and Theodoros Leontiou and Stefan Meinel and Marc Wagner",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).; 39th International Symposium on Lattice Field Theory, LATTICE 2022 ; Conference date: 08-08-2022 Through 13-08-2022",

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T1 - Antiheavy-Antiheavy-Light-Light Four-Quark Bound States

AU - Pflaumer, Martin

AU - Alexandrou, Constantia

AU - Finkenrath, Jacob

AU - Leontiou, Theodoros

AU - Meinel, Stefan

AU - Wagner, Marc

N1 - Publisher Copyright: © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).

PY - 2023/4/6

Y1 - 2023/4/6

N2 - We present our recent results on antiheavy-antiheavy-light-light tetraquark systems using lattice QCD. Our study of the b̄b̄us four-quark system with quantum numbers JP = 1+ and the b̄c̄ud four-quark systems with I(JP) = 0(0+) and I(JP) = 0(1+) utilizes scattering operators at the sink to improve the extraction of the low-lying energy levels. We found a bound state for b̄b̄us with Ebind, b̄b̄us = (-86 ± 22 ± 10) MeV, but no indication for a bound state in both b̄c̄ud channels. Moreover, we show preliminary results for b̄b̄ud with I(JP) = 0(1+), where we used scattering operators both at the sink and the source. We found a bound state and determined its infinite-volume binding energy with a scattering analysis, resulting in Ebind, b̄b̄ud = (-103 ± 8) MeV.

AB - We present our recent results on antiheavy-antiheavy-light-light tetraquark systems using lattice QCD. Our study of the b̄b̄us four-quark system with quantum numbers JP = 1+ and the b̄c̄ud four-quark systems with I(JP) = 0(0+) and I(JP) = 0(1+) utilizes scattering operators at the sink to improve the extraction of the low-lying energy levels. We found a bound state for b̄b̄us with Ebind, b̄b̄us = (-86 ± 22 ± 10) MeV, but no indication for a bound state in both b̄c̄ud channels. Moreover, we show preliminary results for b̄b̄ud with I(JP) = 0(1+), where we used scattering operators both at the sink and the source. We found a bound state and determined its infinite-volume binding energy with a scattering analysis, resulting in Ebind, b̄b̄ud = (-103 ± 8) MeV.

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M3 - Conference article

AN - SCOPUS:85153288914

SN - 1824-8039

VL - 430

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 075

T2 - 39th International Symposium on Lattice Field Theory, LATTICE 2022

Y2 - 8 August 2022 through 13 August 2022

ER -

Antiheavy-Antiheavy-Light-Light Four-Quark Bound States

Abstract

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