Masses of doubly heavy tetraquarks with error bars
Abstract
In the heavy-quark limit, the two heavy quarks in a doubly heavy baryon or a doubly heavy tetraquark are bound by their color-Coulomb potential into a compact diquark. The doubly heavy hadrons are related by the approximate heavy-quark–diquark symmetry of QCD to the heavy hadrons obtained by replacing the heavy diquark by a heavy antiquark. Effective field theories can be used to expand the masses of singly heavy hadrons and doubly heavy hadrons in inverse powers of the heavy-quark masses. The coefficients in the expansions for doubly heavy tetraquarks can be determined from those for heavy mesons, heavy baryons, and doubly heavy baryons using heavy-quark–diquark symmetry. We predict the masses of the ground-state doubly heavy tetraquarks with error bars using as inputs the masses of heavy mesons and heavy baryons measured in experiments and the masses of doubly heavy baryons calculated using lattice QCD. The only doubly heavy tetraquarks predicted to be stable with respect to strong decays are bb tetraquarks with light flavor $$\bar{u}\bar{d}, \bar{s}\bar{u}$$, and $$\bar{s}\bar{d}$$.
- Publication Date:
- Research Org.:
- The Ohio State Univ., Columbus, OH (United States); Duke Univ., Durham, NC (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1755478
- Alternate Identifier(s):
- OSTI ID: 1849596
- Grant/Contract Number:
- FG02-05ER15715; FG02-05ER41368
- Resource Type:
- Published Article
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Name: Physical Review D Journal Volume: 103 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; Astronomy & Astrophysics; Physics; Heavy quark effective theory; Strong interaction; Quantum chromodynamics; Nonrelativistic QCD; Bottom quark; Quarks; Exotic mesons; Hadrons; Mesons
Citation Formats
Braaten, Eric, He, Li-Ping, and Mohapatra, Abhishek. Masses of doubly heavy tetraquarks with error bars. United States: N. p., 2021.
Web. doi:10.1103/PhysRevD.103.016001.
Braaten, Eric, He, Li-Ping, & Mohapatra, Abhishek. Masses of doubly heavy tetraquarks with error bars. United States. https://doi.org/10.1103/PhysRevD.103.016001
Braaten, Eric, He, Li-Ping, and Mohapatra, Abhishek. Mon .
"Masses of doubly heavy tetraquarks with error bars". United States. https://doi.org/10.1103/PhysRevD.103.016001.
@article{osti_1755478,
title = {Masses of doubly heavy tetraquarks with error bars},
author = {Braaten, Eric and He, Li-Ping and Mohapatra, Abhishek},
abstractNote = {In the heavy-quark limit, the two heavy quarks in a doubly heavy baryon or a doubly heavy tetraquark are bound by their color-Coulomb potential into a compact diquark. The doubly heavy hadrons are related by the approximate heavy-quark–diquark symmetry of QCD to the heavy hadrons obtained by replacing the heavy diquark by a heavy antiquark. Effective field theories can be used to expand the masses of singly heavy hadrons and doubly heavy hadrons in inverse powers of the heavy-quark masses. The coefficients in the expansions for doubly heavy tetraquarks can be determined from those for heavy mesons, heavy baryons, and doubly heavy baryons using heavy-quark–diquark symmetry. We predict the masses of the ground-state doubly heavy tetraquarks with error bars using as inputs the masses of heavy mesons and heavy baryons measured in experiments and the masses of doubly heavy baryons calculated using lattice QCD. The only doubly heavy tetraquarks predicted to be stable with respect to strong decays are bb tetraquarks with light flavor $\bar{u}\bar{d}, \bar{s}\bar{u}$, and $\bar{s}\bar{d}$.},
doi = {10.1103/PhysRevD.103.016001},
journal = {Physical Review D},
number = 1,
volume = 103,
place = {United States},
year = {Mon Jan 04 00:00:00 EST 2021},
month = {Mon Jan 04 00:00:00 EST 2021}
}
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