Two-pole structure of the D0*(2400)

被引：0
|
作者：
Fernandez-Soler, P. [1 ]
Albaladejo, M. [1 ,2 ]
Guo, F. -K. [3 ,4 ]
Nieves, J. [1 ]
机构：
[1] Univ Valencia, Ctr Mixto CSIC, Inst Fis Corpuscular IFIC, Inst Invest Paterna, Aptd 22085, E-46071 Valencia, Spain
[2] Univ Murcia, Fac Quim, Dept Fis, E-30071 Murcia, Spain
[3] Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
[4] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
来源：
FAIRNESS 2017: FAIR NEXT GENERATION SCIENTISTS 2017 | 2018年 / 1024卷
关键词：
GOLDSTONE BOSONS; HEAVY MESONS;
D O I：
10.1088/1742-6596/1024/1/012036
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the interaction of the D pi, D eta and D-s(K) over bar channels in J(P) = 0(+) in the framework of unitarized chiral perturbation theory in finite volume, predicting the volume dependence of the energy levels. The results succesfully describe the energy levels provided in a recent lattice QCD calculation of the same system. We find two poles in the energy region of the D-0*(2400) resonance, with masses 2105(-8)(+6), 2451(-26)(+36) MeV and half-widths 102(-12)(+10), 134(-8)(+7) MeV respectively. We study their evolution in the light-flavor SU(3) limit, which allows us to identify the D-s*(0)(2317) resonance and the pole with lower mass as partners of the same SU(3) multiplet. The mass of the higher pole is obtained between the D eta and D-s(K) over bar threshold energies, strongly coupled to the latter channel, thus we expect it to influence the D-s(K) over bar invariant mass distribution.
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页数：5
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