# 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: 26 Jul 11:15 - 13:15

## Conveners

• Braaten, Eric (Ohio State University)

## Timetable | Contribution List

Displaying 4 contributions out of 4
Type: Parallel Session: Exotic hadrons and candidates-1
Exploring the nature of exotic multiquark candidates such as the X(3872) plays a pivotal role in understanding quantum chromodynamics (QCD). Despite significant efforts, consensus on their internal structures is still lacking. We demonstrate a novel approach to help address this problem by studying the X(3872) production in heavy ion collisions, where a hot fireball with ample light as well as cha ... More
Presented by Prof. Qian WANG on 26/7/2021 at 17:20
The dependence of the production of the $X(3872)$ meson on the hadron multiplicity in pp collisions has been used as evidence against X being a charm-meson molecule. A simple modification of the comover interaction model gives excellent fits to the data from the LHCb collaboration on the multiplicity dependence of the production of $X$ and $\psi(2S)$, giving a range of compatible values for react ... More
The ALICE Collaboration has carried out measurements of K$^0_{\rm S}$K$^{\rm \pm}$ interactions with pp collisions at $\sqrt{s}=7$ TeV and Pb--Pb collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV to study the $a_0(980)$ meson, which is a tetraquark candidate, using the method of two-particle femtoscopy. Using a simple geometric argument, our results are found to be compatible with the interpretation of ... More