Strange hidden-charm PψsΛ(4459) and PψsΛ(4338) pentaquarks and additional PψsΛ, PψsΣ and PψssN candidates in a quark model approach

被引：25

作者：

Ortega, Pablo G. ^{[1
,2
]}

Entem, David R. ^{[2
,3
]}

Fernandez, Francisco ^{[2
,3
]}

机构：

[1] Univ Salamanca, Dept Fis Fundamental, E-37008 Salamanca, Spain

[2] Univ Salamanca, Inst Univ Fis Fundamental & Matemat IUFFyM, E-37008 Salamanca, Spain

[3] Univ Salamanca, Grp Fis Nucl, E-37008 Salamanca, Spain

来源：

PHYSICS LETTERS B | 2023年 / 838卷

基金：

欧盟地平线“2020”;

关键词：

Quark model; Charmed baryon; Baryon-meson molecules; Hidden-charm pentaquarks; Hidden-bottom pentaquarks; LAMBDA(B);

D O I：

10.1016/j.physletb.2023.137747

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Hidden-charm pentaquark-like P-psi s(Lambda)(4459)(0) and P-psi s(Lambda)(4338) resonances are studied in a constituent quark model as molecular meson-baryon structures. Such states are found in the J(P)(I) = 1/2(-) (0) channel with masses and widths compatible with the experimental measurements in a coupled-channels calculation with all the parameters constrained from previous studies. Other candidates are explored in the J(P)= 1/2(-,) 3/2(-) and 5/2(-) channels in the charm and bottom sectors, with isospins 0(P-psi s(Lambda) and P-psi s(Lambda)) and 1(P-psi s(Lambda) and P-gamma s(Sigma)). Additionally, the formalism is extended to study the PN.ss( P-psi s(N)) pentaquarks, where eight candidates are predicted as (D) over bars Xi(c) molecules in I = 1/2, with J(P)= 1/2(-), 3/2(-) and 5/2(-) for the charm sector and nine candidates as B-s Xi(b) for the bottom one. (c) 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP(3).

引用

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