Revisiting spin alignment of heavy meson in its inclusive production
文献类型：期刊论文
| 作者 | Ma, JP ; Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
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| 刊名 | NUCLEAR PHYSICS B
 |
| 出版日期 | 2002 |
| 卷号 | 622期号:40910页码:416-428 |
| 关键词 | Charm-quark Fragmentation Effective Field-theory Parton Fragmentation D-star Polarization Decay Matrix Odd |
| ISSN号 | 0550-3213 |
| 英文摘要 | In the heavy quark limit inclusive production rate of a heavy meson can be factorized, in which the nonperturbative effect related to the heavy meson can be characterized by matrix elements defined in the heavy quark effective theory. Using this factorization, predictions for the full spin density matrix of a spin-1 and spin-2 meson can be obtained and they are characterized only by one coefficient representing the nonperturbative effect. Predictions for spin-1 heavy meson are compared with experiment performed at a(+)e(-) colliders in the energy range from roots = 10.5 GeV to roots = 91 GeV, a complete agreement is found for D* and B* meson. For D** meson, our prediction suffers a large correction, as indicated by experimental data. There exists another approach by taking heavy mesons as bound systems, in which the total angular momentum of the light degrees of freedom is 1/2 and 3/2 for spin-1 and spin-2 meson, respectively, then the diagonal parts of spin density matrices can be obtained. However, there are distinct differences in the predictions from the two approaches and they are discussed in detail. (C) 2002 Elsevier Science B.V. All rights reserved. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000173640800019 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13601]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Ma, JP,Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.. Revisiting spin alignment of heavy meson in its inclusive production[J]. NUCLEAR PHYSICS B,2002,622(40910):416-428. |
| APA | Ma, JP,&Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(2002).Revisiting spin alignment of heavy meson in its inclusive production.NUCLEAR PHYSICS B,622(40910),416-428. |
| MLA | Ma, JP,et al."Revisiting spin alignment of heavy meson in its inclusive production".NUCLEAR PHYSICS B 622.40910(2002):416-428. |
入库方式： OAI收割
来源：理论物理研究所
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