July 31, 2018 to August 6, 2018
Maynooth University
Europe/Dublin timezone

EFT determination of the hybrid spin potential

Aug 5, 2018, 3:40 PM
Hall H (Arts Bldg.)

Hall H

Arts Bldg.

Invited talk C: Heavy quarks Heavy quarks


Wai Kin Lai (TUM)


We study the spin-splitting in the spectrum of heavy quarkonium hybrids using non-relativistic effective theory. After sequentially integrating out modes at the scales m_Q, m_Q v and Lambda_QCD, we obtain the spin-dependent potential to order 1/m_Q^2, in which non-perturbative contributions are given by gluonic correlators. With the hybrid potentials obtained from the lattice, we solve the relevant Schrodinger equation in the EFT, and obtain the spin-splitting by applying perturbation theory. Values of non-perturbative contributions are obtained by fitting to lattice data of the charmonium hybrid spectrum. With these non-perturbative parameters obtained, we predict the bottomonium hybrid spectrum.

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