https://doi.org/10.1051/epjconf/201817505014
Heavy light tetraquarks from Lattice QCD
1
Tata Institute of Fundamental Research, Mumbai 400005
2
Institüt für Theoretische Physik, Universität Regensburg, D-93040 Regensburg, Germany.
* Speaker, e-mail: parikshit@theory.tifr.res.in
Published online: 26 March 2018
We present preliminary results from a lattice calculation of tetraquark states in the charm and bottom sector of the type udbb, usbb, udcc and scbb. These calculations are performed on Nf = 2 + 1 + 1 MILC ensembles with lattice spacing of a = 0:12 fm and a = 0:06 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.
© The Authors, published by EDP Sciences, 2018
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