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arXiv 0903.0787hep-ph
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中微子的超锐共振俘获作为普朗克长度的实验室探针

Hypersharp Resonant Capture of Neutrinos as a Laboratory Probe of the Planck Length

R. S. Raghavan

摘要:

18.6 keV的反中微子线从2体衰变的3 H在晶体中可以发射的自然宽度,因为晶格振动的运动平均,尽管3 H的寿命很长,并在这种情况下,通常持有的线宽的观点相反。它可以共振捕获在3 He的几何截面σ ~10-17 cm ~ 2。利用它的超灵敏度Δ E/E ~10-29和时间过滤共振方法,可以测量~ 3 H态预期的基本能宽~10-24 eV,以检验最终核宽度是否受普朗克长度而不是时间-能量不确定性的限制。

英文摘要:

The 18.6 keV antineutrino line from 2-body decay of 3H in crystals can be emitted with natural width because of motional averaging by lattice vibrations despite the very long lifetime of 3H and contrary to commonly held views of linewidths in such a case. It can be resonantly captured in 3He with geometrical cross section sigma ~10-17 cm2. Using its hypersharp sensitivity DELTAE/E ~10-29 and the method of time-filtered resonance, the basic energy width ~10-24 eV expected of the 3H state can be measured to test if ultimate nuclear widths are limited by the Planck length rather than time-energy uncertainty.

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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