Event calendar file
26-31 July 2021
Mexico City
Mexico/General timezone
HADRON 2021 is over. Thanks for making it a success!
- hadron2021@nucleares.unam.mx
Contact information
Exotic hadrons and candidates-2
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
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
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Presented by Dr. Hua-Xing CHEN
on
27/7/2021
at
17:20
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
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Presented by Sen JIA
on
27/7/2021
at
16:40
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
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Presented by Dr. Yasuhiro YAMAGUCHI
on
27/7/2021
at
17:40
Type: Leading parallel
Session:
Exotic hadrons and candidates-2
Track: Exotic Hadrons and Candidates
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=
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Presented by Dr. Brian COLQUHOUN
on
27/7/2021
at
16:15
Few stable multiquarks remain once a careful treatment of the few-body problem is implemented. In this contribution we consider the role played by relativistic kinetic energy on their stability. It is found that the binding energy is lower in the relativistic case. Tetraquarks with double heavy flavor become stable for a larger heavy-light mass ratio. All-heavy tetraquarks, not stable in standard
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Presented by Prof. Jean-Marc RICHARD
on
27/7/2021
at
17:00
