# Recent results on pentaquarks at LHCb

- Institution: CERN
- Department: LHC Seminar
- Speaker: Liming Zhang
- Year: 2019
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3018431)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

In 2015, the LHCb collaboration reported the observation of significant structures in the $J/\psi p$ final state in a sample of $\Lambda_b^0 -> J/\psi p K^-$ decays using Run 1 data, and showed that the structures could only be explained by the presence of exotic hadrons (pentaquarks). This was a major turning point in the exotic baryon spectroscopy. In this seminar, an update of the study with the full Run 1 and 2 data set collected by the LHCb detector will be presented. With the additional data, a new pentaquark state is observed and the structure reported previously is found to be more complex. Possible interpretations will be also discussed. .

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## Lectures

1. [Recent results on pentaquarks at LHCb](https://invisiblenetwork.ai/learn/cern/3018431/47e14ac2d0f3), 53 min (CERN's player)