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首页> 外文期刊>European physical journal >An algorithm for the reconstruction of high-energy neutrino-induced particle showers and its application to the ANTARES neutrino telescope
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An algorithm for the reconstruction of high-energy neutrino-induced particle showers and its application to the ANTARES neutrino telescope

机译：高能中微子引起的粒子阵雨的重建算法及其在ANTARES中微子望远镜中的应用

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摘要

A novel algorithm to reconstruct neutrino-induced particle showers within the ANTARES neutrino telescope is presented. The method achieves a median angular resolution of (6^circ ) for shower energies below 100?TeV. Applying this algorithm to 6 years of data taken with the ANTARES detector, 8 events with reconstructed shower energies above 10?TeV are observed. This is consistent with the expectation of about 5 events from atmospheric backgrounds, but also compatible with diffuse astrophysical flux measurements by the IceCube collaboration, from which 2–4 additional events are expected. A (90%) C.L. upper limit on the diffuse astrophysical neutrino flux with a value per neutrino flavour of ( ext {E}^2cdot Phi ^{90%} = 4.9 cdot 10^{-8},mathrm {GeV} cdot mathrm {cm^{-2} cdot s^{-1}cdot sr^{-1}}) is set, applicable to the energy range from 23?TeV to 7.8?PeV, assuming an unbroken ( ext {E}^{-2}) spectrum and neutrino flavour equipartition at Earth.
机译：提出了一种在ANTARES中微子望远镜中重建中微子引起的粒子阵雨的新算法。对于低于100？TeV的淋浴能量，该方法可实现（6 ^ circ）的中值角分辨率。将该算法应用于使用ANTARES探测器采集的6年数据中，观察到8个事件的重建淋浴能量高于10？TeV。这与大气背景下大约5个事件的预期是一致的，但也与IceCube合作的弥散天体物理通量测量结果相符，预计还会有2-4个事件。 A（90％）C.L.每个中微子味的弥散天体中微子通量的上限（ext {E} ^ 2cdot Phi ^ {90 ％} = 4.9 cdot 10 ^ {-8}，mathrm {GeV} cdot mathrm {cm ^ {-设置2} cdot s ^ {-1} cdot sr ^ {-1}}），适用于从23？TeV到7.8？PeV的能量范围，假设光谱不间断（ext {E} ^ {-2}）和地球上的中微子味道均分。

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