The solution to the '1/2 vs 3/2' puzzle
文献类型：期刊论文
| 作者 | Wang, Guo-Li; Li, Qiang6; Wang, Tianhong7; Feng, Tai-Fu; Wu, Xing-Gang; Chang, Chao-Hsi |
| 刊名 | EUROPEAN PHYSICAL JOURNAL C
 |
| 出版日期 | 2022 |
| 卷号 | 82期号:11页码:1027 |
| ISSN号 | 1434-6044 |
| 关键词 | SEMILEPTONIC B DECAYS D-ASTERISK-ASTERISK MESONS TAU PREDICTIONS TRANSITIONS CONSTANTS MODEL |
| DOI | 10.1140/epjc/s10052-022-10997-4 |
| 英文摘要 | Using an almost complete relativistic method based on the Bethe-Salpeter equation, we study the mixing angle theta, the mass splitting Delta M, the strong decay widths Gamma (D-1(('))) and the weak production rates Br(B -> D(1)((') )lv(l))) of the D-1 (2420) and D-1' (2430). We find there is the strong cancellation between the P-1(1) and P-3(1) partial waves in D-1', (2430) with theta similar to - 35.3 degrees, which leads to the '1/2 vs 3/2' puzzle. The puzzle can not be overcome by adding only relativistic corrections since in a large parameter range where Delta M is linear varying and not small, the theta, Gamma(D-1(('))) and Br(B -> D-1((')) lv(l)) remain almost unchanged but conflict with data. While in a special range around the mass inverse point where Delta M = 0 and theta = +/- 90 degrees, they change rapidly but we find the windows where Delta M, Gamma (D-1(('))) and Br(B -> D(1)((') )lv(l)) are all consistent with data. The small Delta M confirmed by experiment, is crucial to solve the '1/2 vs 3/2' puzzle. |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27886]  |
| 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.Harbin Inst Technol, Sch Phys, Harbin 150001, Peoples R China 2.Chongqing Univ, Dept Phys, Chongqing Key Lab Strongly Coupled Phys, Chongqing 401331, Peoples R China 3.CCAST World Lab, POB 8730, Beijing 100190, Peoples R China 4.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China 5.Hebei Univ, Dept Phys, Baoding 071002, Peoples R China 6.Key Lab High Precis Computat & Applicat Quantum F, Baoding 071002, Peoples R China 7.Northwestern Polytech Univ, Sch Phys Sci & Technol, Xian 710072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Guo-Li,Li, Qiang,Wang, Tianhong,et al. The solution to the '1/2 vs 3/2' puzzle[J]. EUROPEAN PHYSICAL JOURNAL C,2022,82(11):1027. |
| APA | Wang, Guo-Li,Li, Qiang,Wang, Tianhong,Feng, Tai-Fu,Wu, Xing-Gang,&Chang, Chao-Hsi.(2022).The solution to the '1/2 vs 3/2' puzzle.EUROPEAN PHYSICAL JOURNAL C,82(11),1027. |
| MLA | Wang, Guo-Li,et al."The solution to the '1/2 vs 3/2' puzzle".EUROPEAN PHYSICAL JOURNAL C 82.11(2022):1027. |
入库方式： OAI收割
来源：理论物理研究所
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