# CERN Accelerating science

 ATLAS Note Report number ATLAS-CONF-2019-048 Title Study of $J/\psi p$ resonances in the $Λ^0_b→J/\psi pK^−$ decays in $pp$ collisions at $\sqrt{s}$=7 and 8TeV with the ATLAS detector Corporate Author(s) The ATLAS collaboration Collaboration ATLAS Collaboration Imprint 17 Oct 2019. - 24 p. In: 18th International Conference on B-Physics at Frontier Machines, Ljubljana, Slovenia, 30 Sep - 4 Oct 2019 Subject category Particle Physics - Experiment Accelerator/Facility, Experiment CERN LHC ; ATLAS Free keywords BPHYS Abstract A study of $J/\psi p$ resonances in the $Λ^0_b→J/\psi pK^−$ decays with large $m(pK^-)$ invariant masses by the ATLAS experiment at the LHC is presented. The analysis is based on a combined sample of $pp$ collision data at centre-of-mass energies $\sqrt{s}$=7TeV and 8TeV corresponding to integrated luminosities of $4.9fb^{−1}$ and $20.6fb^{−1}$, respectively. Although the data prefer the model with two or more pentaquark states, the model without pentaquarks is not excluded. The pentaquark masses and widths obtained using the model with two pentaquarks are consistent with those from the LHCb experiment.

Corresponding record in: Inspire

Записът е създаден на 2019-10-17, последна промяна на 2019-10-17

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