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arXiv 0910.2969hep-phhep-ex
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自旋为1的HyperCP粒子对稀有B原子的衰变

Rare B Decays with a HyperCP Particle of Spin One

Sechul Oh, Jusak Tandean

摘要:

根据CLEO、BaBar、KTeV和Belle合作的最新实验信息,我们研究了轻自旋1粒子可能导致HyperCP实验观察到的三个Sigma^+ -> p mu^+ mu^-事件的一些后果。特别是,允许新粒子有矢量和轴矢量耦合到普通费米子,我们系统地研究了它的各种过程的贡献,涉及b味介子,包括B-Bbar混合以及轻子,包容性和排他性的B衰变。使用最新的实验数据,我们提取其耦合的界限,并随后估计上限的分支比的一些B衰变的新粒子。这可以用来指导对粒子的实验研究,以帮助证实或反驳它的存在。

英文摘要:

In light of recent experimental information from the CLEO, BaBar, KTeV, and Belle collaborations, we investigate some consequences of the possibility that a light spin-one particle is responsible for the three Sigma^+ -> p mu^+ mu^- events observed by the HyperCP experiment. In particular, allowing the new particle to have both vector and axial-vector couplings to ordinary fermions, we systematically study its contributions to various processes involving b-flavored mesons, including B-Bbar mixing as well as leptonic, inclusive, and exclusive B decays. Using the latest experimental data, we extract bounds on its couplings and subsequently estimate upper limits for the branching ratios of a number of B decays with the new particle. This can serve to guide experimental searches for the particle in order to help confirm or refute its existence.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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