arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1603.07232hep-phhep-ex
收藏

D波矢量夸克偶素的轻子衰变

Leptonic decays of D-wave vector quarkonia

A. Krassnigg, M. Gomez-Rocha, T. Hilger

摘要:

本文简要介绍了我们的协变Dyson-Schwinger-Bethe-Salpeter方程方法,利用彩虹梯截断模型研究了重夸克偶素态在赝标和矢量通道中的轻子衰变性质.比较衰变常数的大小,我们确定径向1-激发在我们的计算与实验激发J/π和π。特别注意的是那些被视为D波态的夸克模型的状态。我们预测了ca量级的π(1^3D_1)和π(2^3D_1)态的e+e-衰变宽度。15 eV或更高。我们还提供了一套预测的赝标径向激发的衰变常数在重夸克偶素。

英文摘要:

We give a short and basic introduction to our covariant Dyson-Schwinger-Bethe-Salpeter-equation approach using a rainbow-ladder truncated model of QCD, in which we investigate the leptonic decay properties of heavy quarkonium states in the pseudoscalar and vector channels. Comparing the magnitudes of decay constants, we identify radial 1-- excitations in our calculation with experimental excitations of J/Ψand Υ. Particular attention is paid to those states regarded as D-wave states in the quark model. We predict e+e- decay width of the Υ(1^3D_1) and Υ(2^3D_1) states of the order of ca. 15 eV or more. We also provide a set of predictions for decay constants of pseudoscalar radial excitations in heavy quarkonia.

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。

↑