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Title: Stable Tetraquarks

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 (DHTQ) must exist. HQS relates DHTQ mass to masses of a doubly heavy baryon, heavy-light baryon, and heavy-light meson. The lightest double-beauty states composed of $$bb \bar{u} \bar{d}$$, $$bb \bar{u}\bar{s}$$, and $$bb \bar{d} \bar{s}$$ will likely be stable against strong decays. Heavier $$bb\bar{q}_k \bar{q}_l$$ states, $$cc \bar{q}_k \bar{q}_l$$ states, and mixed $$bc \bar{q}_k \bar{q}_l$$ states, will likely dissociate into pairs of heavy-light mesons. Some might be seen as \double- avor" resonances near threshold. Observing a weakly decaying double-beauty state would establish the existence of tetraquarks and illuminate the role of heavy color-$$\bar{3}$$ diquarks as hadron constituents.

Authors:
 [1]
  1. Fermilab
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:
1460416
Report Number(s):
FERMILAB-SLIDES-18-037-T; arXiv:1707.09575
1682388
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Conference
Resource Relation:
Conference: 53rd Rencontres de Moriond on QCD and High Energy Interactions, La Thuile, Italy, 03/17-03/24/2018
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Quigg, Christ. Stable Tetraquarks. United States: N. p., 2018. Web.
Quigg, Christ. Stable Tetraquarks. United States.
Quigg, Christ. Tue . "Stable Tetraquarks". United States. https://www.osti.gov/servlets/purl/1460416.
@article{osti_1460416,
title = {Stable Tetraquarks},
author = {Quigg, Christ},
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 (DHTQ) must exist. HQS relates DHTQ mass to masses of a doubly heavy baryon, heavy-light baryon, and heavy-light meson. The lightest double-beauty states composed of $bb \bar{u} \bar{d}$, $bb \bar{u}\bar{s}$, and $bb \bar{d} \bar{s}$ will likely be stable against strong decays. Heavier $bb\bar{q}_k \bar{q}_l$ states, $cc \bar{q}_k \bar{q}_l$ states, and mixed $bc \bar{q}_k \bar{q}_l$ states, will likely dissociate into pairs of heavy-light mesons. Some might be seen as \double- avor" resonances near threshold. Observing a weakly decaying double-beauty state would establish the existence of tetraquarks and illuminate the role of heavy color-$\bar{3}$ diquarks as hadron constituents.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {3}
}

Conference:
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