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Title: Lattice QCD investigation of a doubly-bottom b ¯ b ¯ u d tetraquark with quantum numbers I ( J P ) = 0 ( 1 + )

Abstract

We use lattice QCD to investigate the spectrum of the $$\bar{b} \bar{b} u d$$ four-quark system with quantum numbers $I(J^P) = 0(1^+)$. We use five different gauge-link ensembles with $2+1$ flavors of domain-wall fermions, including one at the physical pion mass, and treat the heavy $$\bar{b}$$ quark within the framework of lattice nonrelativistic QCD. Our work improves upon previous similar computations by considering in addition to local four-quark interpolators also nonlocal two-meson interpolators and by performing a L\"uscher analysis to extrapolate our results to infinite volume. We obtain a binding energy of $$(-128 \pm 24 \pm 10) \, \textrm{MeV}$$, corresponding to the mass $$(10476 \pm 24 \pm 10) \, \textrm{MeV}$$, which confirms the existence of a $$\bar{b} \bar{b} u d$$ tetraquark that is stable with respect to the strong and electromagnetic interactions.

Authors:
; ; ;
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1542486
Alternate Identifier(s):
OSTI ID: 1542270
Report Number(s):
[JLAB-THY-19-2912; DOE/OR/23177-4667; arXiv:1904.04197]
[Journal ID: ISSN 2470-0010; PRVDAQ; 014503]
Grant/Contract Number:  
[AC05-06OR23177; SC0009913; AC02-05CH11231; WA3000/3-1; ACI-1548562]
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
[Journal Name: Physical Review D Journal Volume: 100 Journal Issue: 1]; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Leskovec, Luka, Meinel, Stefan, Pflaumer, Martin, and Wagner, Marc. Lattice QCD investigation of a doubly-bottom b ¯ b ¯ u d tetraquark with quantum numbers I ( J P ) = 0 ( 1 + ). United States: N. p., 2019. Web. doi:10.1103/PhysRevD.100.014503.
Leskovec, Luka, Meinel, Stefan, Pflaumer, Martin, & Wagner, Marc. Lattice QCD investigation of a doubly-bottom b ¯ b ¯ u d tetraquark with quantum numbers I ( J P ) = 0 ( 1 + ). United States. doi:10.1103/PhysRevD.100.014503.
Leskovec, Luka, Meinel, Stefan, Pflaumer, Martin, and Wagner, Marc. Fri . "Lattice QCD investigation of a doubly-bottom b ¯ b ¯ u d tetraquark with quantum numbers I ( J P ) = 0 ( 1 + )". United States. doi:10.1103/PhysRevD.100.014503.
@article{osti_1542486,
title = {Lattice QCD investigation of a doubly-bottom b ¯ b ¯ u d tetraquark with quantum numbers I ( J P ) = 0 ( 1 + )},
author = {Leskovec, Luka and Meinel, Stefan and Pflaumer, Martin and Wagner, Marc},
abstractNote = {We use lattice QCD to investigate the spectrum of the $\bar{b} \bar{b} u d$ four-quark system with quantum numbers $I(J^P) = 0(1^+)$. We use five different gauge-link ensembles with $2+1$ flavors of domain-wall fermions, including one at the physical pion mass, and treat the heavy $\bar{b}$ quark within the framework of lattice nonrelativistic QCD. Our work improves upon previous similar computations by considering in addition to local four-quark interpolators also nonlocal two-meson interpolators and by performing a L\"uscher analysis to extrapolate our results to infinite volume. We obtain a binding energy of $(-128 \pm 24 \pm 10) \, \textrm{MeV}$, corresponding to the mass $(10476 \pm 24 \pm 10) \, \textrm{MeV}$, which confirms the existence of a $\bar{b} \bar{b} u d$ tetraquark that is stable with respect to the strong and electromagnetic interactions.},
doi = {10.1103/PhysRevD.100.014503},
journal = {Physical Review D},
number = [1],
volume = [100],
place = {United States},
year = {2019},
month = {7}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevD.100.014503

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Cited by: 6 works
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