| B→K2*(1430)ω中的电荷不对称性及其对B0→a2(1320)-π+和a2(1320)-ρ+的影响 |
| |
| 作者姓名： | 杨德山 杨绍恺 |
| |
| 作者单位： | 中国科学院研究生院物理学院, 北京 100049 |
| |
| 基金项目： | Supported by National Natural Science Foundation of China (10705050, 10935012) |
| |
| 摘 要： | B→K2*(1430)ω衰变中观测到大的电荷不对称性. 我们指出增强的张量介子发射图贡献可以解释这种不对称性. 从实验结果中提取出张量介子发射图的贡献,将其应用到B0→a2(1320)-π+和a2(1320)-ρ+衰变中. 预言的结果比以往的理论预言要大很多. 该结果将在不久的KEK-SuperB、LHCb实验中得到检验.
|
| 关 键 词： | B衰变" target="_blank">B衰变')">B衰变 电荷不对称性 张量介子 QCD因子化 味对称性 |
| 收稿时间： | 2011-04-27 |
| 修稿时间： | 2011-05-10 |
Charge asymmetry in B→K2*(1430)ω and its implications in B0→a2(1320)-π+ and a2(1320)-ρ+ |
| |
| Authors: | YANG De-Shan YANG Shao-Kai |
| |
| Institution: | College of Physical Sciences, Graduate University, Chinese Academy of Sciences, Beijing 100049, China |
| |
| Abstract: | The large charge asymmetry in B→K2*(1430)ω observed by the BaBar collaboration is hard to be explained within the framework of QCD factorization. We show that the enhanced tensor meson emission may cause such difficulties in the QCD factorization. We focus on the longitudinal part of the decay amplitude for B→K2*(1430)ω. We extract the tensor emission contribution from the experimental data and apply them to the Cabibbo favored B decays B0→a2*-π+(ρ+) by using the SU(3) flavor symmetry minimally. The predicted branching ratios of these decays are much greater than those obtained by the QCD factorization. Our results will be examined by future experimental measurements at the KEK-SuperB and LHCb. |
| |
| Keywords: | B decays" target="_blank">B decays')">B decays charge asymmetry tensor mesons QCD factorization flavor symmetry |
|
| 点击此处可从《》浏览原始摘要信息 |
| 点击此处可从《》下载免费的PDF全文 |
