Abstract
Based on lattice nonrelativistic QCD (NRQCD) studies, we present results for Bethe-Salpeter amplitudes for ϒ(1S), ϒ(2S), and ϒ(3S) in vacuum as well as in quark-gluon plasma. Our study is based on 2+1 flavor 483×12 lattices generated using the Highly Improved Staggered Quark action and with a pion mass of 161 MeV. At zero temperature, the Bethe-Salpeter amplitudes follow the expectations based on nonrelativistic potential models. At nonzero temperatures, the interpretation of Bethe-Salpeter amplitudes turns out to be more nuanced but consistent with our previous lattice QCD study of excited Upsilons in quark-gluon plasma.
| Original language | English (US) |
|---|---|
| Article number | 114508 |
| Journal | Physical Review D |
| Volume | 102 |
| Issue number | 11 |
| DOIs | |
| State | Published - Dec 11 2020 |
ASJC Scopus subject areas
- Nuclear and High Energy Physics
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