Implications of chiral symmetry on S-wave pionic resonances and the scalar charmed mesons
文献类型：期刊论文
| 作者 | Du, ML; Guo, FK; Meissner, UG; Guo, FengKun
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2019 |
| 卷号 | 99期号:11页码:114002 |
| ISSN号 | 2470-0010 |
| 关键词 | PERTURBATION-THEORY HEAVY MESONS DECAYS |
| DOI | 10.1103/PhysRevD.99.114002 |
| 英文摘要 | The chiral symmetry of QCD requires energy-dependent pionic strong interactions at low energies. This constraint, however, is not fulfilled by the usual Breit-Wigner parametrization of pionic resonances, leading to masses larger than the real ones. We derive relations between nonleptonic three-body decays of the B meson into a D meson and a pair of light pseudoscalar mesons based on SU(3) chiral symmetry. Employing effective field theory methods, we demonstrate that taking into account the final-state interactions, the experimental data of the decays B--> D+pi(-)pi(-), B-s(0)-> (D) over bar (0) K-pi(+), B-0 -> (D) over bar (0)pi(-)pi(+), B- -> D+pi K--(-) and B-0 -> (D ) over bar (0)pi K--(+) can all be described by the nonperturbative pi/eta/K-D/D-s scattering amplitudes previously obtained from a combination of chiral effective field theory and lattice QCD calculations. The results provide strong support of the scenario that the broad scalar charmed meson D-0*(2400) should be replaced by two states, the lower one of which has a mass of around 2.1 GeV, much smaller than that extracted from experimental data using a Breit-Wigner parametrization. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/23410]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.[Du, Meng-Lin 2.Meissner, Ulf-G.] Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany 3.Meissner, Ulf-G.] Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany 4.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 5.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 6.[Meissner, Ulf-G.] Forschungszentrum Julich, Inst Kernphys, Inst Adv Simulat, D-52425 Julich, Germany 7.[Meissner, Ulf-G.] Forschungszentrum Julich, Julich Ctr Hadron Phys, D-52425 Julich, Germany 8.[Meissner, Ulf-G.] Tbilisi State Univ, Tbilisi 0186, Georgia |
| 推荐引用方式 GB/T 7714 | Du, ML,Guo, FK,Meissner, UG,et al. Implications of chiral symmetry on S-wave pionic resonances and the scalar charmed mesons[J]. PHYSICAL REVIEW D,2019,99(11):114002. |
| APA | Du, ML,Guo, FK,Meissner, UG,&Guo, FengKun.(2019).Implications of chiral symmetry on S-wave pionic resonances and the scalar charmed mesons.PHYSICAL REVIEW D,99(11),114002. |
| MLA | Du, ML,et al."Implications of chiral symmetry on S-wave pionic resonances and the scalar charmed mesons".PHYSICAL REVIEW D 99.11(2019):114002. |
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来源：理论物理研究所
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