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Aug 16 – 21, 2019
Guilin Bravo Hotel, Guilin, China
Asia/Shanghai timezone

Decoding the nature of the pentaquarks in LHC

Aug 18, 2019, 4:40 PM
20m
Golden Cassia (Guilin Bravo Hotel, Guilin, China)

Golden Cassia

Guilin Bravo Hotel, Guilin, China

14 South Ronghu Road, Xiangshan, Guilin 541002, Guangxi, China
Parallel Session 3: Exotic hadrons and candidates Session 3: Exotic hadrons and candidates

Speaker

Dr Meng-Lin Du (HISKP, University of Bonn)

Description

The updated analysis of LHCb in the $\Lambda_b^0\to J/\psi p K^-$ process with nine times data sample in Run II presents three narrow pentaquark structures instead of two in the previous analysis. However, although the large data sample is available, the quantum numbers of the three pentaquarks and the corresponding anglular momentum distribution are still missing. As these three pentaquarks are close to the $\left(\bar{D},\bar{D}^*\right)+\left(\Sigma_c(2455),\Sigma_c(2520)\right)$ thresholds, they could be accepted as hadronic molecular states. We do an overall fit for the lineshape of these three states by solving Lippmann-Schwinger equation with dynaimc pion as well as the inelastic channel to study, to which extent, these three structures could exist as hadronic molecular states. Their quantum numbers and the corresponding angular distributions are also presented for the comparison with further experimental analysis.

Primary author

Dr Meng-Lin Du (HISKP, University of Bonn)

Presentation materials

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