Conveners
Meson Decays and Hadrons on the Lattice
- Astrid Hiller Blin (Johannes Gutenberg Universität Mainz)
Description
co-host: David Richards
We present a determination of the spectrum of excited and exotic bottomonium using lattice QCD. Using a large basis of single-meson operators many highly excited states are identified. These include states which can be grouped into supermultiplets matching quark model expectations and additional states with exotic spin–parity–charge-conjugation quantum numbers $J^{PC}= 0^{+−}, 1^{−+}, 2^{+−}$...
We present calculations of form factors and radiative transitions in the low-lying charmonium sector using Lattice QCD. Results for $J/\psi \to \eta_c \gamma$, $\chi_{c0} \to J/\psi \gamma$ partial widths are presented alongside other form factors. Comparisons are given to previous results in both lattice and experimental studies. Studying radiative transitions provides insights into the...
We present the first calculation within lattice QCD of excited light meson resonances with $J^{PC}=1^{--},2^{--}$, and $3^{--}$. We work within exact SU(3) flavor symmetry in the singlet representation and observe two $1^{--}$ resonances (a first in LQCD), a lighter broad state and a heavier narrower state, a broad $2^{--}$ resonance decaying in both P- and F-waves which is presently...
Most of the exotic quarkonium states have been observed in transitions to standard quarkonium states plus light-quark hadrons. However, so far very little is known of these transitions widths in the Born-Oppenheimer picture of exotic quarkonium, that is when exotic quarkonium are considered as heavy-quark-antiquark bound states over the spectrum of static energies for any given set of light...
Lattice QCD calculations are beginning to push comparisons between theoretical and experimental tests of the Standard Model to unprecedented precisions. In order to meet this precision goal, QED effects must be introduced. In this talk, I will present a systematic study of the spectra of hadrons using a novel technique in which power-law finite-volume effects are mitigated through the...
