English

Higher molecular $P_{\psi s}^{\Lambda/\Sigma}$ pentaquarks arising from the $\Xi_c^{(\prime,*)}\bar D_1/\Xi_c^{(\prime,*)}\bar D_2^*$ interactions

High Energy Physics - Phenomenology 2023-09-27 v2

Abstract

The discoveries of the PψsΛ(4459)P_{\psi s}^\Lambda(4459) and PψsΛ(4338)P_{\psi s}^\Lambda(4338) as the potential ΞcDˉ()\Xi_c\bar D^{(*)} molecules have sparked our curiosity in exploring a novel class of molecular PψsΛ/ΣP_{\psi s}^{\Lambda/\Sigma} pentaquarks. In this study, we carry out an investigation into the higher molecular pentaquarks, specifically focusing on the PψsΛ/ΣP_{\psi s}^{\Lambda/\Sigma} states arising from the Ξc(,)Dˉ1/Ξc(,)Dˉ2\Xi_c^{(\prime,*)}\bar D_1/\Xi_c^{(\prime,*)}\bar D_2^* interactions. Our approach employs the one-boson-exchange model, incorporating both the SS-DD wave mixing effect and the coupled channel effect. Our numerical results suggest that the ΞcDˉ1\Xi_c\bar D_1 states with I(JP)=0(1/2+,3/2+)I(J^P)=0({1}/{2}^+,\,{3}/{2}^+), the ΞcDˉ2\Xi_c\bar D_2^* states with I(JP)=0(3/2+,5/2+)I(J^P)=0({3}/{2}^+,\,{5}/{2}^+), the ΞcDˉ1\Xi_c^{\prime}\bar D_1 states with I(JP)=0(1/2+,3/2+)I(J^P)=0({1}/{2}^+,\,{3}/{2}^+), the ΞcDˉ2\Xi_c^{\prime}\bar D_2^* states with I(JP)=0(3/2+,5/2+)I(J^P)=0({3}/{2}^+,\,{5}/{2}^+), the ΞcDˉ1\Xi_c^{*}\bar D_1 states with I(JP)=0(1/2+,3/2+,5/2+)I(J^P)=0({1}/{2}^+,\,{3}/{2}^+,\,{5}/{2}^+), and the ΞcDˉ2\Xi_c^{*}\bar D_2^* states with I(JP)=0(1/2+,3/2+,5/2+,7/2+)I(J^P)=0({1}/{2}^+,\,{3}/{2}^+,\,{5}/{2}^+,\,{7}/{2}^+) can be recommended as the most promising molecular PψsΛP_{\psi s}^\Lambda pentaquark candidates, and there may exist the potential molecular PψsΣP_{\psi s}^\Sigma pentaquark candidates for several isovector Ξc(,)Dˉ1/Ξc(,)Dˉ2\Xi_c^{(\prime,*)}\bar D_1/\Xi_c^{(\prime,*)}\bar D_2^* states. With the higher statistical data accumulation at the LHCb's Run II and Run III status, there is the possibility that our predicted PψsΛ/ΣP_{\psi s}^{\Lambda/\Sigma} states can be detected through the weak decay of the Ξb\Xi_b baryon, especially in hunting for the predicted PψsΛP_{\psi s}^\Lambda states.

Keywords

Cite

@article{arxiv.2307.08276,
  title  = {Higher molecular $P_{\psi s}^{\Lambda/\Sigma}$ pentaquarks arising from the $\Xi_c^{(\prime,*)}\bar D_1/\Xi_c^{(\prime,*)}\bar D_2^*$ interactions},
  author = {Fu-Lai Wang and Xiang Liu},
  journal= {arXiv preprint arXiv:2307.08276},
  year   = {2023}
}

Comments

22 pages, 6 figures, and 10 tables