Investigation of <i>P<sub>cs</sub></i>(4459)<SUP>0</SUP> pentaquark via its strong decay to Λ<i>J/</i>Ψ

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2021

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Amer Physical Soc

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Physics Group
Atılım University Physics Division was established with the purpose of educating the first-year students of the Engineering and other Departments by providing the general physics courses and, in addition, to make scientific and technological researches at the universal level. Now adays, Physics Division provide the students of Engineering, School of Aviation and Mathematics Departments with the general physics lectures having international education quality. We have in the Group the facilities of the mechanics and electricity laboratories, where the students have the opportunity to realize the practice of the theoretical knowledge in physics. Beside the compulsory courses (General Physics I and General Physics II) there are also elective courses offered by the Group. The faculty members in the Group, whose research interests and fields are given in web-page of the Group in details, perform theoretical as well as experimental researches and make publications in SSC-index journals. Graduate program, with master of sciences and doctorate degree courses and theses, is offered in different scientific areas (for details, see the web-page of the Division). In the Physcis Division there are 6 faculty members, five research assistants, and one technician.

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Abstract

Recently the observation of a new pentaquark state, the hidden-charmed strange P-cs(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, P-cs(4459)(0) -> J/Psi Lambda, 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 the P-cs(4459)(0) state as J(P) = 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 J(P) = 1-/2 and compact pentaquark nature for the P-cs(4459)(0) state.

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Azizi, Kazem/0000-0003-3741-2167;

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35

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Q1

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Volume

103

Issue

9

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https://doi.org/10.1103/PhysRevD.103.094033
 https://hdl.handle.net/20.500.14411/2089

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