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arXiv 1306.2608nucl-exnucl-th
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核和中子$β$ ~衰变张量型弱流的极限

Limits on tensor type weak currents from nuclear and neutron $β$~decays

Frederik Wauters, Alejandro García, Ran Hong

摘要:

利用最新的实验数据,对核和中子$β$衰变产生的时间反演不变张量型弱电流的极限进行了评估。我们发现$ -0.14 \times 10^{-2} < (C_T + C^\prime_T)/C_A < 1.4 \times 10^{-2} $和$ -0.16 < (C_T - C^\prime_T)/C_A < 0.16$(90% C.L.),而对于$C_T = C^\prime_T$情况,限制为$ | C_T/C_A | < 3.7 \times 10^{-3} $。这些限制被证明是更严格的比那些从最近的测量辐射π衰变。此外,未来的$10^{-3}$级相关测量的灵敏度进行了研究。

英文摘要:

The limits on time-reversal invariant tensor-type weak currents from nuclear and neutron $β$ decays are evaluated including most recent experimental data. We find that $ -0.14 \times 10^{-2} < (C_T + C^\prime_T)/C_A < 1.4 \times 10^{-2} $ and $ -0.16 < (C_T - C^\prime_T)/C_A < 0.16$ (90% C.L.), while for the case $C_T = C^\prime_T$ the limits are $ | C_T/C_A | < 3.7 \times 10^{-3} $. These limits are shown to be more stringent than those from recent measurements of the radiative pion decay. In addition, the sensitivity of future $10^{-3}$-level correlation measurements is investigated.

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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