利用 IceCube 中多 TeV 中微子相互作用的非弹性度分布进行测量
高能物理 - 实验
2019-02-26 v2 高能天体物理现象
核实验
摘要
非弹性度——中微子能量转移给强子的比例——是在 IceCube 中研究多 TeV 能段天体物理与大气层中微子相互作用时令人关注的一个量。本工作中，从 5 年数据中获得 IceCube 中一组含内中微子相互作用样本，并分类为 2650 个径迹和 965 个级联。径迹主要来源于带电流 相互作用，我们证明可以重建其能量与非弹性度。发现非弹性度分布在约 1 TeV 到约 100 TeV 的能段内与 Cooper-Sarkar 等人的计算一致。连同所有味的中微子级联，我们还对能量、天顶角和非弹性度分布进行了拟合，以刻画天体物理与大气层中微子的通量。弥漫天体物理中微子的能谱在径迹与级联样本中均可由幂律很好地描述，并在 3.5 TeV 到 2.6 PeV 能段内得到最佳拟合指数 。对天体物理味组成的限制与 的比例相容。利用 与 相互作用截然不同的非弹性度分布，发现 770 GeV 到 21 TeV 能段内大气 与 通量比为 Honda 等人计算的 倍。最后，非弹性度分布也对中微子带电流粲产生敏感。数据与领头阶计算一致，在 置信水平下排除零粲产生。未来对非弹性度分布的分析或可探测影响标准模型内及之外中微子相互作用的新物理。
引用
@article{arxiv.1808.07629,
title = {Measurements using the inelasticity distribution of multi-TeV neutrino interactions in IceCube},
author = {IceCube Collaboration and M. G. Aartsen and M. Ackermann and J. Adams and J. A. Aguilar and M. Ahlers and M. Ahrens and I. Al Samarai and D. Altmann and K. Andeen and T. Anderson and I. Ansseau and G. Anton and C. Argüelles and J. Auffenberg and S. Axani and P. Backes and H. Bagherpour and X. Bai and A. Barbano and J. P. Barron and S. W. Barwick and V. Baum and R. Bay and J. J. Beatty and J. Becker Tjus and K. -H. Becker and S. BenZvi and D. Berley and E. Bernardini and D. Z. Besson and G. Binder and D. Bindig and E. Blaufuss and S. Blot and C. Bohm and M. Börner and F. Bos and S. Böser and O. Botner and E. Bourbeau and J. Bourbeau and F. Bradascio and J. Braun and M. Brenzke and H. -P. Bretz and S. Bron and J. Brostean-Kaiser and A. Burgman and R. S. Busse and T. Carver and E. Cheung and D. Chirkin and K. Clark and L. Classen and G. H. Collin and J. M. Conrad and P. Coppin and P. Correa and D. F. Cowen and R. Cross and P. Dave and M. Day and J. P. A. M. de André and C. De Clercq and J. J. DeLaunay and H. Dembinski and K. Deoskar and S. De Ridder and P. Desiati and K. D. de Vries and G. de Wasseige and M. de With and T. DeYoung and J. C. Díaz-Vélez and V. di Lorenzo and H. Dujmovic and J. P. Dumm and M. Dunkman and E. Dvorak and B. Eberhardt and T. Ehrhardt and B. Eichmann and P. Eller and P. A. Evenson and S. Fahey and A. R. Fazely and J. Felde and K. Filimonov and C. Finley and A. Franckowiak and E. Friedman and A. Fritz and T. K. Gaisser and J. Gallagher and E. Ganster and S. Garrappa and L. Gerhardt and K. Ghorbani and W. Giang and T. Glauch and T. Glüsenkamp and A. Goldschmidt and J. G. Gonzalez and D. Grant and Z. Griffith and C. Haack and A. Hallgren and L. Halve and F. Halzen and K. Hanson and D. Hebecker and D. Heereman and K. Helbing and R. Hellauer and S. Hickford and J. Hignight and G. C. Hill and K. D. Hoffman and R. Hoffmann and T. Hoinka and B. Hokanson-Fasig and K. Hoshina and F. Huang and M. Huber and K. Hultqvist and M. 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Meures and S. Miarecki and J. Micallef and G. Momenté and T. Montaruli and R. W. Moore and M. Moulai and R. Nagai and R. Nahnhauer and P. Nakarmi and U. Naumann and G. Neer and H. Niederhausen and S. C. Nowicki and D. R. Nygren and A. Obertacke Pollmann and A. Olivas and A. O'Murchadha and E. O'Sullivan and T. Palczewski and H. Pandya and D. V. Pankova and P. Peiffer and J. A. Pepper and C. Pérez de los Heros and D. Pieloth and E. Pinat and A. Pizzuto and M. Plum and P. B. Price and G. T. Przybylski and C. Raab and M. Rameez and L. Rauch and K. Rawlins and I. C. Rea and R. Reimann and B. Relethford and G. Renzi and E. Resconi and W. Rhode and M. Richman and S. Robertson and M. Rongen and C. Rott and T. Ruhe and D. Ryckbosch and D. Rysewyk and I. Safa and S. E. Sanchez Herrera and A. Sandrock and J. Sandroos and M. Santander and S. Sarkar and S. Sarkar and K. Satalecka and M. Schaufel and P. Schlunder and T. Schmidt and A. Schneider and J. Schneider and S. Schöneberg and L. Schumacher and S. Sclafani and D. Seckel and S. Seunarine and J. Soedingrekso and D. Soldin and M. Song and G. M. Spiczak and C. Spiering and J. Stachurska and M. Stamatikos and T. Stanev and A. Stasik and R. Stein and J. Stettner and A. Steuer and T. Stezelberger and R. G. Stokstad and A. Stößl and N. L. Strotjohann and T. Stuttard and G. W. Sullivan and M. Sutherland and I. Taboada and F. Tenholt and S. Ter-Antonyan and A. Terliuk and S. Tilav and P. A. Toale and M. N. Tobin and C. Tönnis and S. Toscano and D. Tosi and M. Tselengidou and C. F. Tung and A. Turcati and C. F. Turley and B. Ty and E. Unger and M. A. Unland Elorrieta and M. Usner and J. Vandenbroucke and W. Van Driessche and D. van Eijk and N. van Eijndhoven and S. Vanheule and J. van Santen and M. Vraeghe and C. Walck and A. Wallace and M. Wallraff and F. D. Wandler and N. Wandkowsky and T. B. Watson and A. Waza and C. Weaver and M. J. Weiss and C. Wendt and J. Werthebach and S. Westerhoff and B. J. Whelan and N. Whitehorn and K. Wiebe and C. H. Wiebusch and L. Wille and D. R. Williams and L. Wills and M. Wolf and J. Wood and T. R. Wood and E. Woolsey and K. Woschnagg and G. Wrede and D. L. Xu and X. W. Xu and Y. Xu and J. P. Yanez and G. Yodh and S. Yoshida and T. Yuan},
journal= {arXiv preprint arXiv:1808.07629},
year = {2019}
}
备注
20 pages, 13 figures