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Article overview
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Heavy light tetraquarks from Lattice QCD | | Parikshit Junnarkar
; M Padmanath
; Nilmani Mathur
; | | Date: |
22 Dec 2017 | | Abstract: | We present preliminary results from a lattice calculation of tetraquark
states in the charm and bottom sector of the type $udar{b}ar{b}$,
$usar{b}ar{b}$, $udar{c}ar{c}$ and $scar{b}ar{b}$. These
calculations are performed on $N_f = 2 + 1 + 1$ MILC ensembles with lattice
spacing of $a = 0.12~mathrm{fm} $ and $a=0.06~mathrm{fm} $. A relativistic
action with overlap fermions is employed for the light and charm quarks while a
non-relativistic action with non-perturbatively improved coefficients is used
in the bottom sector. Preliminary results provide a clear indication of
presence of energy levels below the relevant thresholds of different tetraquark
states in the double bottom sector while a scattering state is observed in the
charm sector. | | Source: | arXiv, 1712.8400 | | Services: | Forum | Review | PDF | Favorites | |
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