利用能谱信息优化轻子 CP 破坏灵敏度：以 2300 公里基线的 LBNO 为例
高能物理 - 唯象学
2014-12-02 v1 高能物理 - 实验
摘要
长基线中微子观测站 (LBNO) 的主要目标之一是研究电子中微子和反中微子出现概率的 L/E 行为（能谱信息），以确定未知的 CP 破坏相位 δCP 并发现轻子扇区的 CP 破坏。该结果基于在 2300 公里的极长基线上，对覆盖第一和第二振荡极大值的广泛能量范围内出现概率的测量。通过优化中微子和反中微子通量的能谱，可以最大化实验的灵敏度。这种优化需要探索一个扩展的参数范围，详细描述中微子束流线中初级质子、强子靶和聚焦元件的几何形状与特性。在本文中，我们提出了一种数值解，可得到优化的能谱，并研究其对 LBNO 发现轻子 CP 破坏灵敏度的影响。在优化后的通量中，第一和第二振荡极大值都对 CP 灵敏度起着重要作用。研究还表明，与主要依赖第一极大值处的中微子-反中微子不对称性来确定 CP 破坏是否存在的实验相比，这种配置对系统误差（例如总事件率）较不敏感。
引用
@article{arxiv.1412.0593,
title = {Optimised sensitivity to leptonic CP violation from spectral information: the LBNO case at 2300 km baseline},
author = {LBNO Collaboration and S. K. Agarwalla and L. Agostino and M. Aittola and A. Alekou and B. Andrieu and F. Antoniou and R. Asfandiyarov and D. Autiero and O. Bésida and A. Balik and P. Ballett and I. Bandac and D. Banerjee and W. Bartmann and F. Bay and B. Biskup and A. M. Blebea-Apostu and A. Blondel and M. Bogomilov and S. Bolognesi and E. Borriello and I. Brancus and A. Bravar and M. Buizza-Avanzini and D. Caiulo and M. Calin and M. Calviani and M. Campanelli and C. Cantini and G. Cata-Danil and S. Chakraborty and N. Charitonidis and L. Chaussard and D. Chesneanu and F. Chipesiu and P. Crivelli and J. Dawson and I. De Bonis and Y. Declais and P. Del Amo Sanchez and A. Delbart and S. Di~Luise and D. Duchesneau and J. Dumarchez and I. Efthymiopoulos and A. Eliseev and S. Emery and T. Enqvist and K. Enqvist and L. Epprecht and A. N. Erykalov and T. Esanu and D. Franco and M. Friend and V. Galymov and G. Gavrilov and A. Gendotti and C. Giganti and S. Gilardoni and B. Goddard and C. M. Gomoiu and Y. A. Gornushkin and P. Gorodetzky and A. Haesler and T. Hasegawa and S. Horikawa and K. Huitu and A. Izmaylov and A. Jipa and K. Kainulainen and Y. Karadzhov and M. Khabibullin and A. Khotjantsev and A. N. Kopylov and A. Korzenev and S. Kosyanenko and D. Kryn and Y. Kudenko and P. Kuusiniemi and I. Lazanu and C. Lazaridis and J. -M. Levy and K. Loo and J. Maalampi and R. M. Margineanu and J. Marteau and C. Martin-Mari and V. Matveev and E. Mazzucato and A. Mefodiev and O. Mineev and A. Mirizzi and B. Mitrica and S. Murphy and T. Nakadaira and S. Narita and D. A. Nesterenko and K. Nguyen and K. Nikolics and E. Noah and Yu. Novikov and A. Oprima and J. Osborne and T. Ovsyannikova and Y. Papaphilippou and S. Pascoli and T. Patzak and M. Pectu and E. Pennacchio and L. Periale and H. Pessard and B. Popov and M. Ravonel and M. Rayner and F. Resnati and O. Ristea and A. Robert and A. Rubbia and K. Rummukainen and A. Saftoiu and K. Sakashita and F. Sanchez-Galan and J. Sarkamo and N. Saviano and E. Scantamburlo and F. Sergiampietri and D. Sgalaberna and E. Shaposhnikova and M. Slupecki and D. Smargianaki and D. Stanca and R. Steerenberg and A. R. Sterian and P. Sterian and S. Stoica and C. Strabel and J. Suhonen and V. Suvorov and G. Toma and A. Tonazzo and W. H. Trzaska and R. Tsenov and K. Tuominen and M. Valram and G. Vankova-Kirilova and F. Vannucci and G. Vasseur and F. Velotti and P. Velten and V. Venturi and T. Viant and S. Vihonen and H. Vincke and A. Vorobyev and A. Weber and S. Wu and N. Yershov and L. Zambelli and M. Zito},
journal= {arXiv preprint arXiv:1412.0593},
year = {2014}
}
备注
25 pages, 20 figures