19th International Conference on Hadron Spectroscopy and Structure in memoriam Simon Eidelman

26-31 July 2021
Mexico City
Mexico/General timezone
HADRON 2021 is over. Thanks for making it a success!
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Place

Location: Mexico City
Date: 27 Jul 11:15 - 13:15

Conveners

• Dr. Toledo, Genaro (Instituto de Fisica, UNAM)

Timetable | Contribution List

Displaying 5 contributions out of 5
Type: Parallel Session: Exotic hadrons and candidates-2
After examining the Feynman diagrams corresponding to some candidates of hadronic molecular states, we propose a possible binding mechanism induced by shared light quarks. We use the method of QCD sum rules to calculate its corresponding light-quark-exchange diagrams, and the obtained results indicate a model-independent hypothesis: the light-quark-exchange interaction is attractive when the share ... More
Presented by Dr. Hua-Xing CHEN on 27/7/2021 at 17:20
Type: Parallel Session: Exotic hadrons and candidates-2
ISR physics is an interesting way to look for resonant states, which - in case of observation - has a clear signature. This is unique to an e+e- experiments. We present here first studies performed with the early Phase 3 data at Belle II. The Belle II experiment has recorded data corresponding to 89.99 fb-1 integrated luminosity, with which we have performed the analysis of the e+e- -> psi(2S), ps ... More
Presented by Sen JIA on 27/7/2021 at 16:40
Type: Parallel Session: Exotic hadrons and candidates-2
The $P_c$ pentaquark, reported by LHCb, has attracted a lot of interest. We investigate the $P_c$'s as a meson-baryon molecule coupling to the compact $uudc\bar{c}$ states. This coupling works as the short-range force in the molecule, while the pion exchange is employed as the long-range force. We study masses and widths of $P_c$ and discuss the roles of the short-range and long-range forces ... More
We discuss our lattice QCD calculations of a number of tetraquark channels with at least one heavy quark where some phenomenological models, already fully constrained by fits to the ordinary meson & baryon spectrum, predict deep binding. We find no evidence of deeply-bound tetraquarks, except in previously established strong-interaction stable $I=0$, $J^P=1^+$ $ud\bar{b}\bar{b}$ and $I=1/2$, \$J^P= ... More