Speaker
Miguel Teseo San José Pérez
(Laboratoire de Physique des 2 infinis Irène Joliot-Curie – IJCLab)
Description
We present our ongoing work on the distribution amplitudes of the charmonia states $\eta_c(1s)$ and $J/\psi(1s)$. We use the so-called pseudo approach developed by A. Radyushkin in a set of three CLS $N_f=2$ ensembles at three different lattice spacings between $0.08~\text{fm}$ and $0.05~\text{fm}$ and a pion mass around $270~\text{MeV}$. The resulting momentum distributions can be studied in the region of Ioffe times $|\nu|<4$, where we observe a non-trivial functional dependence which can be compared to the NRQCD expectation of a flat behaviour.
| Topical area | Structure of Hadrons and Nuclei |
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Primary author
Miguel Teseo San José Pérez
(Laboratoire de Physique des 2 infinis Irène Joliot-Curie – IJCLab)
Co-authors
Dr
Benoit Blossier
(Laboratoire de Physique des 2 Infinis Irène Joliot-Curie)
Dr
José Manuel Morgado Chávez
(LSN/DPhN)
Dr
Mariane Mangin-Brinet
(Theory Group, Laboratoire de Physique Subatomique et de Cosmologie)