Radhakrishnan, Archana and Padmanath, M. and Mathur, Nilmani (2024) Isoscalar axial-vector bottom-charm tetraquarks from QCD. Il nuovo cimento C, 47 (4). pp. 1-4. ISSN 1826-9885
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Abstract
The increasing number of discovered heavy quark exotic hadrons call for immediate theoretical investigations based on first principles. Our study focuses on tetraquark states made up of a bottom and charm quark in the axialvector (1+) channel with isospin I = 0, using Lattice Quantum Chromodynamics. These computations were conducted on the state-of-the-art MILC ensembles using dynamical up/down, strange, and charm quark fields implemented with a highly improved staggered quark action. The valence quarks were implemented using an overlap action, with quark masses ranging from light to the charm sector, while the evolution of the bottom quark was studied within a non-relativistic QCD framework. We observe strong evidence of an energy level beneath the elastic threshold, which implies an attractive interaction between the bottom and charm mesons, indicating the possible existence of bound charmed-bottomed tetraquarks.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 11 Sep 2024 15:25 |
| Last Modified: | 11 Sep 2024 15:25 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/23121 |
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