IceCube 首次观测到 PeV 能量中微子
高能天体物理现象
2013-07-15 v2 宇宙学与河外天体物理
摘要
我们报告观测到两个由中微子诱导的事件，其在 IceCube 探测器中的估计沉积能量分别为 1.04 0.16 和 1.14 0.17 PeV，这是迄今为止观测到的最高中微子能量。这些事件与 IceCube 探测器内由中性流 () 或带电电流 () 相互作用引起的完全包含粒子簇射一致。这些事件是在利用对应于 615.9 天有效运行时间的数据搜索超高能中微子时发现的。预期的大气背景数量为 。考虑到预期背景事件数量的不确定性，在仅存在大气背景的假设下观测到两个或更多候选事件的概率为 ()。这两个事件可能是天体物理中微子通量的首个迹象，然而其中等显著性此时尚不允许得出确定性结论。
引用
@article{arxiv.1304.5356,
title = {First observation of PeV-energy neutrinos with IceCube},
author = {IceCube Collaboration and M. G. Aartsen and R. Abbasi and Y. Abdou and M. Ackermann and J. Adams and J. A. Aguilar and M. Ahlers and D. Altmann and J. Auffenberg and X. Bai and M. Baker and S. W. Barwick and V. Baum and R. Bay and J. J. Beatty and S. Bechet and J. Becker Tjus and K. -H. Becker and M. Bell and M. L. Benabderrahmane and S. BenZvi and J. Berdermann and P. Berghaus and D. Berley and E. Bernardini and A. Bernhard and D. Bertrand and D. Z. Besson and G. Binder and D. Bindig and M. Bissok and E. Blaufuss and J. Blumenthal and D. J. Boersma and S. Bohaichuk and C. Bohm and D. Bose and S. Böser and O. Botner and L. Brayeur and H. -P. Bretz and A. M. Brown and R. Bruijn and J. Brunner and M. Carson and J. Casey and M. Casier and D. Chirkin and A. Christov and B. Christy and K. Clark and F. Clevermann and S. Coenders and S. Cohen and D. F. Cowen and A. H. Cruz Silva and M. Danninger and J. Daughhetee and J. C. Davis and C. De Clercq and S. De Ridder and P. Desiati and M. de With and T. DeYoung and J. C. Díaz-Vélez and M. Dunkman and R. Eagan and B. Eberhardt and J. Eisch and R. W. Ellsworth and S. Euler and P. A. Evenson and O. Fadiran and A. R. Fazely and A. Fedynitch and J. Feintzeig and T. Feusels and K. Filimonov and C. Finley and T. Fischer-Wasels and S. Flis and A. Franckowiak and R. Franke and K. Frantzen and T. Fuchs and T. K. Gaisser and J. Gallagher and L. Gerhardt and L. Gladstone and T. Glüsenkamp and A. Goldschmidt and G. Golup and J. G. Gonzalez and J. A. Goodman and D. Góra and D. Grant and A. Groß and M. Gurtner and C. Ha and A. Haj Ismail and P. Hallen and A. Hallgren and F. Halzen and K. Hanson and D. Heereman and D. Heinen and K. Helbing and R. Hellauer and S. Hickford and G. C. Hill and K. D. Hoffman and R. Hoffmann and A. Homeier and K. Hoshina and W. Huelsnitz and P. O. Hulth and K. Hultqvist and S. Hussain and A. Ishihara and E. Jacobi and J. Jacobsen and K. Jagielski and G. S. Japaridze and K. Jero and O. Jlelati and B. Kaminsky and A. Kappes and T. Karg and A. Karle and J. L. Kelley and J. Kiryluk and F. Kislat and J. Kläs and S. R. Klein and J. -H. Köhne and G. Kohnen and H. Kolanoski and L. Köpke and C. Kopper and S. Kopper and D. J. Koskinen and M. Kowalski and M. Krasberg and K. Krings and G. Kroll and J. Kunnen and N. Kurahashi and T. Kuwabara and M. Labare and H. Landsman and M. J. Larson and M. Lesiak-Bzdak and M. Leuermann and J. Leute and J. Lünemann and J. Madsen and R. Maruyama and K. Mase and H. S. Matis and F. McNally and K. Meagher and M. Merck and P. Mészáros and T. Meures and S. Miarecki and E. Middell and N. Milke and J. Miller and L. Mohrmann and T. Montaruli and R. Morse and R. Nahnhauer and U. Naumann and H. Niederhausen and S. C. Nowicki and D. R. Nygren and A. Obertacke and S. Odrowski and A. Olivas and M. Olivo and A. O'Murchadha and L. Paul and J. A. Pepper and C. Pérez de los Heros and C. Pfendner and D. Pieloth and E. Pinat and N. Pirk and J. Posselt and P. B. Price and G. T. Przybylski and L. Rädel and M. Rameez and K. Rawlins and P. Redl and R. Reimann and E. Resconi and W. Rhode and M. Ribordy and M. Richman and B. Riedel and J. P. Rodrigues and C. Rott and T. Ruhe and B. Ruzybayev and D. Ryckbosch and S. M. Saba and T. Salameh and H. -G. Sander and M. Santander and S. Sarkar and K. Schatto and M. Scheel and F. Scheriau and T. Schmidt and M. Schmitz and S. Schoenen and S. Schöneberg and A. Schönwald and A. Schukraft and L. Schulte and O. Schulz and D. Seckel and Y. Sestayo and S. Seunarine and C. Sheremata and M. W. E. Smith and M. Soiron and D. Soldin and G. M. Spiczak and C. Spiering and M. Stamatikos and T. Stanev and A. Stasik and T. Stezelberger and R. G. Stokstad and A. Stößl and E. A. Strahler and R. Ström and G. W. Sullivan and H. Taavola and I. Taboada and A. Tamburro and S. Ter-Antonyan and G. Tešić and S. Tilav and P. A. Toale and S. Toscano and M. Usner and D. van der Drift and N. van Eijndhoven and A. Van Overloop and J. van Santen and M. Vehring and M. Voge and M. Vraeghe and C. Walck and T. Waldenmaier and M. Wallraff and R. Wasserman and Ch. Weaver and M. Wellons and C. Wendt and S. Westerhoff and N. Whitehorn and K. Wiebe and C. H. Wiebusch and D. R. Williams and H. Wissing and M. Wolf and T. R. Wood and K. Woschnagg and C. Xu and D. L. Xu and X. W. Xu and J. P. Yanez and G. Yodh and S. Yoshida and P. Zarzhitsky and J. Ziemann and S. Zierke and A. Zilles and M. Zoll},
journal= {arXiv preprint arXiv:1304.5356},
year = {2013}
}
备注
7 pages, 5 figures, 1 table, accepted for publication in Physical Review Letters