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Implications of heavy quark-diquark symmetry for excited doubly heavy baryons and tetraquarks

Publication ,  Journal Article
Mehen, T
Published in: Physical Review D
November 28, 2017

We give heavy quark-diquark symmetry predictions for doubly heavy baryons and tetraquarks in light of the recent discovery of the Ξcc++ by LHCb. For five excited doubly charm baryons that are predicted to lie below the ΛcD threshold, we give predictions for their electromagnetic and strong decays using a previously developed chiral Lagrangian with heavy quark-diquark symmetry. Based on the mass of the Ξcc++, the existence of a doubly heavy bottom I=0 tetraquark that is stable to strong and electromagnetic decays has been predicted. If the mass of this state is below 10405 MeV, as predicted in some models, we argue using heavy quark-diquark symmetry that the JP=1+ I=1 doubly bottom tetraquark state will lie just below the open bottom threshold and likely be a narrow state as well. In this scenario, we compute strong decay width for this state using a new Lagrangian for doubly heavy tetraquarks which is related to the singly heavy baryon Lagrangian by heavy quark-diquark symmetry.

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Published In

Physical Review D

DOI

EISSN

2470-0029

ISSN

2470-0010

Publication Date

November 28, 2017

Volume

96

Issue

9
 

Citation

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MLA
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Mehen, T. (2017). Implications of heavy quark-diquark symmetry for excited doubly heavy baryons and tetraquarks. Physical Review D, 96(9). https://doi.org/10.1103/PhysRevD.96.094028
Mehen, T. “Implications of heavy quark-diquark symmetry for excited doubly heavy baryons and tetraquarks.” Physical Review D 96, no. 9 (November 28, 2017). https://doi.org/10.1103/PhysRevD.96.094028.
Mehen, T. “Implications of heavy quark-diquark symmetry for excited doubly heavy baryons and tetraquarks.” Physical Review D, vol. 96, no. 9, Nov. 2017. Scopus, doi:10.1103/PhysRevD.96.094028.

Published In

Physical Review D

DOI

EISSN

2470-0029

ISSN

2470-0010

Publication Date

November 28, 2017

Volume

96

Issue

9