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arXiv 1602.05288hep-phhep-ex
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$D_s/B_s$介子弱衰变中的$a_0(980)-f_0(980)$混合

Search for the $a_0(980)-f_0(980)$ mixing in weak decays of $D_s/B_s$ mesons

Wei Wang

摘要:

标量介子$a^0_0(980)$和$f_0(980)$可以通过同位旋破坏效应相互混合,并且混合强度在各种理论模型中都得到了百分水平的预测。然而,迄今为止,在实验方面还没有确定混合。本文探讨了利用重介子的弱衰变:$D_s\to [π^0η, ππ] e^+ν$、$B_s\to [π^0η, ππ]\ell^+\ell^-$和$B_s\to J/ψ[π^0η,π^+π^-]$衰变提取$a_0-f_0$混合强度的可能性。基于BEPC-Ⅱ、LHC、Super KEKB和未来对撞机等实验装置积累的大量数据,我们发现有可能高精度地确定$a_0-f_0$混合强度,这将有助于更好地理解标量介子的性质。

英文摘要:

Scalar mesons $a^0_0(980)$ and $f_0(980)$ can mix with each other through isospin violating effects, and the mixing intensity has been predicted at the percent level in various theoretical models. However the mixing has not been firmed established on the experimental side to date. In this work we explore the possibility to extract the $a_0-f_0$ mixing intensity using weak decays of heavy mesons: $D_s\to [π^0η, ππ] e^+ν$, $B_s\to [π^0η, ππ]\ell^+\ell^-$ and the $B_s\to J/ψ[π^0η,π^+π^-]$ decays. Based on the large amount of data accumulated by various experimental facilities including BEPC-II, LHC, Super KEKB and the future colliders, we find that the $a_0-f_0$ mixing intensity might be determined to a high precision, which will lead to a better understanding of the nature of scalar mesons.

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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