Pentaquark interpretation of $$\Lambda _{c}$$ states in the quark model

Author:

Yan Ye,Hu Xiaohuang,Wu Yuheng,Huang Hongxia,Ping Jialun,Yang Youchang

Abstract

AbstractMotivated by the recent observation of the$$\Lambda _c(2910)^+$$Λc(2910)+state in the$$\Sigma _{c}(2455)^{0,++}\pi ^{\pm }$$Σc(2455)0,++π±spectrum by the Belle Collaboration, we investigate the explanation of$$\Lambda _{c}$$Λcstates within the pentaquark framework using the quark delocalization color screening model (QDCSM). To check for bound states and resonance states, we utilize the real-scaling method. Additionally, we calculate the root mean square of cluster spacing to study the structure of the states and further estimate whether a state is a resonance state or not. Our numerical results show that$$\Lambda _{c}(2910)$$Λc(2910)cannot be interpreted as a molecular state, and$$\Sigma _{c}(2800)$$Σc(2800)cannot be explained as theNDmolecular state with$$J^P=1/2^-$$JP=1/2-. However, we find that$$\Lambda _{c}(2595)$$Λc(2595)can be interpreted as a molecular state with$$J^P=\frac{1}{2}^-$$JP=12-, where the main component is$$\Sigma _{c}\pi $$Σcπ. Similarly, we interpret$$\Lambda _{c}(2625)$$Λc(2625)as a molecular state with$$J^P=\frac{3}{2}^-$$JP=32-, where the main component is$$\Sigma _{c}^{*}\pi $$Σcπ. We also suggest that$$\Lambda _{c}(2940)$$Λc(2940)is likely to be interpreted as a molecular state with$$J^P=3/2^-$$JP=3/2-, where the main component is$$ND^{*}$$ND. In addition, we predict two new states: a$$J^P=3/2^-$$JP=3/2-$$\Sigma _{c}\rho $$Σcρresonance state with a mass of 3140–3142 MeV, and a$$J^P=\frac{5}{2}^-$$JP=52-$$\Sigma _{c}^*\rho $$Σcρstate with a mass about 3187–3188 MeV.

Funder

Postgraduate Research and Practice Innovation Program of Jiangsu Province

National Natural Science Foundation of China

Publisher

Springer Science and Business Media LLC

Subject

Physics and Astronomy (miscellaneous),Engineering (miscellaneous)

Reference116 articles.

1. B. Knapp, W.Y. Lee, P. Leung, S.D. Smith, A. Wijangco, J. Knauer, D. Yount, J. Bronstein, R. Coleman, G. Gladding et al., Phys. Rev. Lett. 37, 882 (1976)

2. H. Albrecht et al. (ARGUS), Phys. Lett. B 317, 227 (1993)

3. K.W. Edwards et al. (CLEO), Phys. Rev. Lett. 74, 3331 (1995)

4. H. Albrecht et al. (ARGUS), Phys. Lett. B 402, 207 (1997)

5. P.L. Frabetti et al. (E687), Phys. Rev. Lett. 72, 961 (1994)

Cited by 5 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3