# Moscow International School of Physics 2020

3-9 March 2020
HSE Study Center “Voronovo”
Europe/Moscow timezone

## Hadronic molecular binding of $Z_b(10610)$ and $Z_b(10650)$

8 Mar 2020, 17:54
12m
HSE Study Center “Voronovo”

#### HSE Study Center “Voronovo”

Voronovskoe, Moscow Russian Federation
Talk [10+2 min] Young Scientist Forum

Simon Leon Krug

### Description

Starting with the discovery of the $X(3872)$ in 2003, evidence for many exotic states beyond explanations within the quark model have been found in experiments worldwide. Many of those states are close to thresholds of two combined open-flavor states with convenient quantum numbers, such that the data suggests a treatment as a composite system, namely a hadronic molecule. In the talk, research for the case of $Z_b(10610)$ and $Z_b(10650)$ will be examined. Calculations using HQET and $\chi$PT that might disclose the molecular nature of a composite $B^{(*)}$-$\bar{B}^{(*)}$ system will be presented. The obtained matrix elements could be used for the computation of a possible molecular binding energy and the shape of the corresponding potential well which hopefully gives insight into the internal mechanism of Z-states.

Simon Leon Krug

### Presentation Materials

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