Measurement of the spectroscopy of orbitally excited B mesons at LEP
文献类型：期刊论文
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 1999 |
| 卷号 | 465期号:1--4页码:323-334 |
| 关键词 | LUND MONTE-CARLO HEAVY-QUARK Z-DECAYS ASTERISK PRODUCTION JET FRAGMENTATION CHARMED MESONS MUON DETECTOR L3 EXPERIMENT E+E-PHYSICS CONSTRUCTION |
| 通讯作者 | Acciarri, M (reprint author), Ist Nazl Fis Nucl, Sez Milano, Via Celoria 16, I-20133 Milan, Italy. |
| 英文摘要 | We measure the masses, decay widths and relative production rate of orbitally excited B mesons using 1.25 million hadronic Z decays recorded by the L3 detector. B-meson candidates are inclusively reconstructed and combined with charged pions produced at the primary event Vertex. An excess of events above the expected background in the Err mass spectrum in the region 5.6-5.8 GeV is interpreted as resulting from the decay B-u,B-d** --> B-pi((*)), where B-u,B-d** denotes a mixture of l = 1 B-meson states containing a u or a d quark. A fit to the mass spectrum yields the masses and decay widths of the B-1* and B-2* spin states, as well as the branching fraction for the combination of l = 1 states. In addition, evidence is presented for the existence of an excited B-meson state or mixture of states in the region 5.9-6.0 GeV. (C) 1999 Published by Elsevier Science B.V. All rights reserved. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000083732000044 |
| 公开日期 | 2016-02-25 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/211997]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 推荐引用方式 GB/T 7714 | . Measurement of the spectroscopy of orbitally excited B mesons at LEP[J]. PHYSICS LETTERS B,1999,465(1--4):323-334. |
| APA | (1999).Measurement of the spectroscopy of orbitally excited B mesons at LEP.PHYSICS LETTERS B,465(1--4),323-334. |
| MLA | "Measurement of the spectroscopy of orbitally excited B mesons at LEP".PHYSICS LETTERS B 465.1--4(1999):323-334. |
入库方式： OAI收割
来源：高能物理研究所
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