I c N interaction in chiral effective field theory

被引：15
|
作者：
Meng, Lu [1 ,2 ]
Wang, Bo [1 ,2 ,3 ]
Zhu, Shi-Lin [1 ,2 ,3 ]
机构：
[1] Peking Univ, Sch Phys, Beijing 100871, Peoples R China
[2] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
[3] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
来源：
PHYSICAL REVIEW C | 2020年 / 101卷 / 06期
基金：
中国国家自然科学基金;
关键词：
BARYON-BARYON INTERACTION; SHORT-RANGE PART; NUCLEAR-FORCES; QUARK-MODEL; PHASE-SHIFTS; HYPERNUCLEI; PENTAQUARK; QCD;
D O I：
10.1103/PhysRevC.101.064002
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We adopt the chiral effective field theory to calculate the ςcN interaction to the next-to-leading order. We consider the contact interactions, one-pion-exchange contributions, two-pion-exchange diagrams, and renormalization effects of the vertices, masses, and wave functions. With the pion-mass-dependent expression, we fit the ςcN interaction from the HAL QCD calculation with mπ≈410 MeV and mπ≈570 MeV, and then extrapolate it to the physical pion mass. The S13(I=1/2)ςcN interaction is weakly attractive but no bound solution is found. We also propose a quark model to estimate the leading order ςcN contact interaction with the NN interaction as input. This approach combining the quark model and the chiral effective field theory predicts a very attractive interaction in the S01(I=3/2)ςcN channel and a two-body bound state. © 2020 American Physical Society.
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页数：11
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