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arXiv 0812.2715astro-ph
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ANITA实验中超高能宇宙中微子通量的新极限

New Limits on the Ultra-high Energy Cosmic Neutrino Flux from the ANITA Experiment

ANITA collaboration, P. Gorham, P. Allison, S. Barwick, J. Beatty, D. Besson, W. Binns, C. Chen, P. Chen, J. Clem, A. Connolly, P. Dowkontt, M. DuVernois, R. Fi… 展开作者

ANITA collaboration, P. Gorham, P. Allison, S. Barwick, J. Beatty, D. Besson, W. Binns, C. Chen, P. Chen, J. Clem, A. Connolly, P. Dowkontt, M. DuVernois, R. Field, D. Goldstein, A. Goodhue, C. Hast, C. Hebert, S. Hoover, M. Israel, J. Kowalski, J. Learned, K. Liewer, J. Link, E. Lusczek, S. Matsuno, B. Mercurio, C. Miki, P. Miocinovic, J. Nam, C. Naudet, R. Nichol, K. Palladino, K. Reil, A. Romero-Wolf, M. Rosen, L. Ruckman, D. Saltzberg, D. Seckel, G. Varner, D. Walz, Y. Wang, F. Wu

摘要:

我们报告的南极脉冲瞬态天线(ANITA-1)2006-2007年的长期气球飞行,寻找宇宙中微子的扩散通量以上的能量为3 EeV的证据的第一次飞行的初步结果。ANITA-1飞行了35天,寻找由于南极冰盖内中微子诱导的电磁阵雨中的Askaryan效应而产生的无线电脉冲。我们在这里报告我们的初步分析,这是作为数据的盲检进行的。没有发现中微子候选者,没有探测到物理背景。我们根据这一结果设置了与模型无关的限制。从我们的分析得出的上限排除了最高的宇宙成因中微子模型。在一个背景水平极化通道,我们还检测到六个事件一致的无线电脉冲从超高能量广泛的空气淋浴。

英文摘要:

We report initial results of the first flight of the Antarctic Impulsive Transient Antenna (ANITA-1) 2006-2007 Long Duration Balloon flight, which searched for evidence of a diffuse flux of cosmic neutrinos above energies of 3 EeV. ANITA-1 flew for 35 days looking for radio impulses due to the Askaryan effect in neutrino-induced electromagnetic showers within the Antarctic ice sheets. We report here on our initial analysis, which was performed as a blind search of the data. No neutrino candidates are seen, with no detected physics background. We set model-independent limits based on this result. Upper limits derived from our analysis rule out the highest cosmogenic neutrino models. In a background horizontal-polarization channel, we also detect six events consistent with radio impulses from ultra-high energy extensive air showers.

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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