在Borexino中使用太阳中微子的地球轨道参数独立测定

论文标题

在Borexino中使用太阳中微子的地球轨道参数独立测定

Independent determination of the Earth's orbital parameters with solar neutrinos in Borexino

论文作者

Appel, S., Bagdasarian, Z., Basilico, D., Bellini, G., Benziger, J., Biondi, R., Caccianiga, B., Calaprice, F., Caminata, A., 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., Goettel, 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., Pelicci, L., Penek, O., Pietrofaccia, L., Pilipenko, N., Pocar, A., Raikov, G., Ranalli, M. T., Ranucci, G., Razeto, A., Re, A., Redchuk, M., Rossi, N., Schoenert, S., Semenov, D., Settanta, G., Skorokhvatov, M., Singhal, A., Smirnov, O., Sotnikov, A., Tartaglia, R., Testera, G., Unzhakov, E., Vishneva, A., Vogelaar, R. B., von Feilitzsch, F., Wojcik, M., Wurm, M., Zavatarelli, S., Zuber, K., Zuzel, G.

论文摘要

自2012年初以来，Borexino的合作一直在报告质子蛋白链和碳氮氧气周期中发出的太阳中微子通量的精确测量。由于地球轨道的偏心率，在Borexino数据的II期和II期达到的实验灵敏度使得可以检测到太阳中微子相互作用速率的年度调制，其统计学显着性大于5 $σ$。这是仅基于太阳中微子的地球轨道参数的第一个精确测量，也是Borexino信号太阳起源的附加签名。还报道了Borexino太阳中微子检测率的时间序列的完整期间图，探索一个周期/年/天之间的频率。找不到其他重要的调制频率。 Borexino长达十年的高精度太阳中微子检测是唯一使目前的结果成为可能的。

Since the beginning of 2012, the Borexino collaboration has been reporting precision measurements of the solar neutrino fluxes, emitted in the proton-proton chain and in the Carbon-Nitrogen-Oxygen cycle. The experimental sensitivity achieved in Phase-II and Phase-III of the Borexino data taking made it possible to detect the annual modulation of the solar neutrino interaction rate due to the eccentricity of Earth's orbit, with a statistical significance greater than 5$σ$. This is the first precise measurement of the Earth's orbital parameters based solely on solar neutrinos and an additional signature of the solar origin of the Borexino signal. The complete periodogram of the time series of the Borexino solar neutrino detection rate is also reported, exploring frequencies between one cycle/year and one cycle/day. No other significant modulation frequencies are found. The present results were uniquely made possible by Borexino's decade-long high-precision solar neutrino detection.

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