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Title: Heavy-Quark Symmetry Implies Stable Heavy Tetraquark Mesons Q i Q j q ¯ k q ¯ l

For very heavy quarks Q, relations derived from heavy-quark symmetry predict the existence of novel narrow doubly heavy tetraquark states of the form Q iQ j¯q k¯q l (subscripts label flavors), where q designates a light quark. By evaluating finite-mass corrections, we predict that double-beauty states composed of bb¯u¯d, bb¯u¯s, and bb¯d¯s will be stable against strong decays, whereas the double-charm states cc¯q k¯q l, mixed beauty+charm states bc¯q k¯q l, and heavier bb¯qk¯ql states will dissociate into pairs of heavy-light mesons. Furthermore, observation of a new double-beauty state through its weak decays would establish the existence of tetraquarks and illuminate the role of heavy color-antitriplet diquarks as hadron constituents.
Authors:
ORCiD logo [1] ; ORCiD logo [1]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Publication Date:
Report Number(s):
FERMILAB-PUB-17-289-T; arXiv:1707.09575
Journal ID: ISSN 0031-9007; PRLTAO; 1613669
Grant/Contract Number:
AC02-07CH11359
Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 119; Journal Issue: 20; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1376075
Alternate Identifier(s):
OSTI ID: 1408937

Eichten, Estia J., and Quigg, Chris. Heavy-Quark Symmetry Implies Stable Heavy Tetraquark Mesons QiQjq¯kq¯l. United States: N. p., Web. doi:10.1103/PhysRevLett.119.202002.
Eichten, Estia J., & Quigg, Chris. Heavy-Quark Symmetry Implies Stable Heavy Tetraquark Mesons QiQjq¯kq¯l. United States. doi:10.1103/PhysRevLett.119.202002.
Eichten, Estia J., and Quigg, Chris. 2017. "Heavy-Quark Symmetry Implies Stable Heavy Tetraquark Mesons QiQjq¯kq¯l". United States. doi:10.1103/PhysRevLett.119.202002.
@article{osti_1376075,
title = {Heavy-Quark Symmetry Implies Stable Heavy Tetraquark Mesons QiQjq¯kq¯l},
author = {Eichten, Estia J. and Quigg, Chris},
abstractNote = {For very heavy quarks Q, relations derived from heavy-quark symmetry predict the existence of novel narrow doubly heavy tetraquark states of the form QiQj¯qk¯ql (subscripts label flavors), where q designates a light quark. By evaluating finite-mass corrections, we predict that double-beauty states composed of bb¯u¯d, bb¯u¯s, and bb¯d¯s will be stable against strong decays, whereas the double-charm states cc¯qk¯ql, mixed beauty+charm states bc¯qk¯ql, and heavier bb¯qk¯ql states will dissociate into pairs of heavy-light mesons. Furthermore, observation of a new double-beauty state through its weak decays would establish the existence of tetraquarks and illuminate the role of heavy color-antitriplet diquarks as hadron constituents.},
doi = {10.1103/PhysRevLett.119.202002},
journal = {Physical Review Letters},
number = 20,
volume = 119,
place = {United States},
year = {2017},
month = {11}
}