Dortmund 2021 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 77: QCD II
T 77.7: Vortrag
Donnerstag, 18. März 2021, 17:30–17:45, Tb
Search for pentaquark states in Λb0 → Σc++(*) D− K− — •Abhay Mehta1, Nicola Skidmore2, and Sebastian Neubert1 — 1Helmholtz Institute for Radiation and Nuclear Physics, University of Bonn, Germany — 2University of Manchester, United Kingdom
In 2015, LHCb first observed exotic hadronic objects consisting of five quarks [1]. So far, evidence for these pentaquarks has only been seen in the J/Ψ p decay and their nature is still obscure. (Non)-evidence in further decay processes is crucial to distinguish between the numerous theoretical models of pentaquarks. Hadronic molecular models, in particular, predict a strong coupling to the decay into Σc++(*) D−. This study uses the Run 1 and Run 2 dataset from the LHCb detector at the LHC.
The talk will cover preliminary selections and fits on the data in the given decay channel.
[1] Roel Aaij et al. "Observation of J/Ψ p Resonances Consistent with Pentaquark States in Λb0 → J/Ψ K− p Decays". In:Phys. Rev. Lett.115 (2015),p. 072001.