“School of Particles And Accelerator”

Back to Papers Home
Back to Papers of School of Particles And Accelerator

Paper   IPM / Particles And Accelerator / 16520
School of Particles and Accelerator
  Title:   Investigation of Pcs(4459)0 pentaquark via its strong decay to Λ J
1.  Kazem Azizi
2.  Y Sarac
3.  H Sundu
  Status:   Published
  Journal: Phys. Rev. D
  No.:  094033
  Vol.:  103
  Year:  2021
  Supported by:  IPM
Recently the observation of a new pentaquark state, the hidden-charmed strange Pcs(4459)0, was reported by the LHCb Collaboration. The spin-parity quantum numbers of this state were not determined as a result of insufficient statistics. To shed light on its quantum numbers, we investigate its decay, Pcs(4459)0J/ΨΛ , the mode that this state has been observed, within the QCD sum rule framework. We obtain the width of this decay assigning the spin-parity quantum numbers of Pcs(4459)0 state as JP=[1/2] and its substructure as diquark-diquark-antiquark. To this end, we first calculate the strong coupling constants defining the considered decay and then use them in the width calculations. The obtained width is consistent with the experimental observation, confirming the quantum numbers JP=[1/2] and compact pentaquark nature for Pcs(4459)0 state.

Download TeX format
back to top
scroll left or right