部分可观测时空混沌系统的无模型预测

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部分可观测时空混沌系统的无模型预测

Improved measurement of solar neutrinos from the Carbon-Nitrogen-Oxygen cycle by Borexino and its implications for the Standard Solar Model

论文作者

Appel, S., Bagdasarian, Z., Basilico, D., Bellini, G., Benziger, J., Biondi, R., Caccianiga, B., Calaprice, F., Caminata, A., Cavalcante, P., Chepurnov, A., D'Angelo, D., Derbin, A., Di Giacinto, A., Di Marcello, V., Ding, X. F., Di Ludovico, A., Di Noto, L., Drachnev, I., Franco, D., Galbiati, C., Ghiano, C., Giammarchi, M., Goretti, A., Göttel, A. S., Gromov, M., Guffanti, D., Ianni, Aldo, Ianni, Andrea, Jany, A., Kobychev, V., Korga, G., Kumaran, S., Laubenstein, M., Litvinovich, E., Lombardi, P., Lomskaya, I., Ludhova, L., Lukyanchenko, G., Machulin, I., Martyn, J., Meroni, E., Miramonti, L., Misiaszek, M., Muratova, V., Nugmanov, R., Oberauer, L., Orekhov, V., Ortica, F., Pallavicini, M., Papp, L., Pelicci, L., Penek, Ö., Pietrofaccia, L., Pilipenko, N., Pocar, A., Raikov, G., Ranalli, M. T., Ranucci, G., Razeto, A., Re, A., Redchuk, M., Rossi, N., Schönert, S., Semenov, D., Settanta, G., Skorokhvatov, M., Singhal, A., Smirnov, O., Sotnikov, A., Tartaglia, R., Testera, G., Unzhakov, E., Villante, F. L., Vishneva, A., Vogelaar, R. B., von Feilitzsch, F., Wojcik, M., Wurm, M., Zavatarelli, S., Zuber, K., Zuzel, G.

论文摘要

我们提出了对使用完整的Borexino Phoes-III数据集获得的CNO太阳中微子相互作用率的改进测量。测得的速率r $ _ {\ rm cno} $ = $ 6.7^{+2.0} _ { - 0.8} $ counts/（day $ \ cdot $ 100吨），使我们能够排除CNO信号的缺失，约7 $ C.L.记者中微子通量为$ 6.6^{+2.0} _ { - 0.9} \ times 10^8 $ cm $^{ - 2} $ s $ s $^{ - 1} $。我们使用新的CNO测量来评估太阳中微子首次与H丰度相对于太阳的C和N丰度。我们的结果是$ n _ {\ rm cn} $ = $ = $（5.78^{+1.86} _ { - 1.00}）\ times10^{ - 4} $显示$ \ sim $ \ sim $ 2 $σ$张力，带有“低金属性”光谱光谱照片测量。另一方面，我们的结果与$^7 $ be和$^8 $ b Solar Neutruxs（也由Borexino测量）一起使用，许可证可在3.1 $σ$ c.l. disfavour上使用。 “低金属性” SSM B16-AGSS09MET作为“高金属性” SSM B16-GS98的替代方案。

We present an improved measurement of the CNO solar neutrino interaction rate at Earth obtained with the complete Borexino Phase-III dataset. The measured rate R$_{\rm CNO}$ = $6.7^{+2.0}_{-0.8}$ counts/(day$ \cdot$ 100 tonnes), allows us to exclude the absence of the CNO signal with about 7$σ$ C.L. The correspondent CNO neutrino flux is $6.6^{+2.0}_{-0.9} \times 10^8$ cm$^{-2}$ s$^{-1}$, taking into account the neutrino flavor conversion. We use the new CNO measurement to evaluate the C and N abundances in the Sun with respect to the H abundance for the first time with solar neutrinos. Our result of $N_{\rm CN}$ = $(5.78^{+1.86}_{-1.00})\times10^{-4}$ displays a $\sim$2$σ$ tension with the "low metallicity" spectroscopic photospheric measurements. On the other hand, our result used together with the $^7$Be and $^8$B solar neutrino fluxes, also measured by Borexino, permits to disfavour at 3.1$σ$ C.L. the "low metallicity" SSM B16-AGSS09met as an alternative to the "high metallicity" SSM B16-GS98.

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