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Title: Stable, Doubly Heavy Tetraquark Mesons

Abstract

Heavy-quark symmetry implies stable heavy tetraquark mesons $$Q_iQ_j \bar{q}_k\bar{q}_l$$ In the limit of very heavy quarks Q, novel narrow doubly heavy tetraquark states must exist. The lightest double-beauty states composed of $$bb\bar{u}\bar{d}$$, $$bb\bar{u}\bar{s}$$, and $$bb\bar{d}\bar{s}$$ will be stable against strong decays. Heavier $$bb\bar{q}_k \bar{q}_l$$ states, double-charm states $$cc\bar{q}_k \bar{q}_l$$ , mixed $$bc\bar{q}_k\bar{q}_l$$ states, will dissociate into pairs of heavy-light mesons. Observing a weakly decaying double-beauty state would establish the existence of tetraquarks and illuminate the role of heavy color-antitriplet diquarks as hadron constituents.

Authors:
 [1]
  1. Munich, Tech. U.
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1460380
Report Number(s):
FERMILAB-SLIDES-18-034-T; arXiv:1707.09575
1682372
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Conference
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Quigg, Chris. Stable, Doubly Heavy Tetraquark Mesons. United States: N. p., 2017. Web.
Quigg, Chris. Stable, Doubly Heavy Tetraquark Mesons. United States.
Quigg, Chris. Mon . "Stable, Doubly Heavy Tetraquark Mesons". United States. https://www.osti.gov/servlets/purl/1460380.
@article{osti_1460380,
title = {Stable, Doubly Heavy Tetraquark Mesons},
author = {Quigg, Chris},
abstractNote = {Heavy-quark symmetry implies stable heavy tetraquark mesons $Q_iQ_j \bar{q}_k\bar{q}_l$ In the limit of very heavy quarks Q, novel narrow doubly heavy tetraquark states must exist. The lightest double-beauty states composed of $bb\bar{u}\bar{d}$, $bb\bar{u}\bar{s}$, and $bb\bar{d}\bar{s}$ will be stable against strong decays. Heavier $bb\bar{q}_k \bar{q}_l$ states, double-charm states $cc\bar{q}_k \bar{q}_l$ , mixed $bc\bar{q}_k\bar{q}_l$ states, will dissociate into pairs of heavy-light mesons. Observing a weakly decaying double-beauty state would establish the existence of tetraquarks and illuminate the role of heavy color-antitriplet diquarks as hadron constituents.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {10}
}

Conference:
Other availability
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