中文

NOvA 实验中由 $\nu_e$ 出现与 $\nu_\mu$ 消失给出的振荡参数新约束

高能物理 - 实验 2018-08-29 v2

摘要

我们给出了 NOvA 实验基于 8.85×10208.85\times10^{20} 质子打靶曝光量的更新结果,对应于 νμνμ\nu_\mu\rightarrow\nu_\muνμνe\nu_\mu\rightarrow\nu_e 振荡,较我们此前发表的结果增加了 46%。该结果利用了在模拟与数据分析两方面的显著改进。对 νμ\nu_\mu 消失与 νe\nu_e 出现数据的联合拟合给出最佳拟合点为正常质量层级、Δm322=2.44×103eV2/c4\Delta m^2_{32} = 2.44\times 10^{-3}{{\rm eV}^2}/c^4sin2θ23=0.56\sin^2\theta_{23} = 0.56 以及 δCP=1.21π\delta_{CP} = 1.21\pi。在正常质量层级下,68.3% 置信区间为 Δm322[2.37,2.52]×103eV2/c4\Delta m^2_{32} \in [2.37,2.52]\times 10^{-3}{{\rm eV}^2}/c^4sin2θ23[0.43,0.51][0.52,0.60]\sin^2\theta_{23} \in [0.43,0.51] \cup [0.52,0.60] 以及 δCP[0,0.12π][0.91π,2π]\delta_{CP} \in [0,0.12\pi] \cup [0.91\pi,2\pi]。在 95% 置信水平下,对于所有其他振荡参数的取值,倒置质量层级均被排除。

关键词

引用

@article{arxiv.1806.00096,
  title  = {New constraints on oscillation parameters from $\nu_e$ appearance and $\nu_\mu$ disappearance in the NOvA experiment},
  author = {M. A. Acero and P. Adamson and L. Aliaga T. Alion and V. Allakhverdian and N. Anfimov A. Antoshkin and E. Arrieta-Diaz and A. Aurisano A. Back and C. Backhouse and M. Baird N. Balashov and B. A. Bambah and K. Bays B. Behera and S. Bending and R. Bernstein V. Bhatnagar and B. Bhuyan and J. Bian T. Blackburn and J. Blair and A. Bolshakova P. Bour and C. Bromberg and J. Brown N. Buchanan and A. Butkevich and V. Bychkov M. Campbell and T. J. Carroll and E. Catano-Mur A. Cedeno and S. Childress and B. C. Choudhary B. Chowdhury and T. E. Coan and M. Colo J. Cooper and L. Corwin and L. Cremonesi D. Cronin-Hennessy and G. S. Davies and J. P. Davies S. De Rijck and P. F. Derwent and R. Dharmapalan P. Ding and Z. Djurcic and E. C. Dukes P. Dung and H. Duyang and S. Edayath R. Ehrlich and G. J. Feldman and M. J. Frank H. R. Gallagher and R. Gandrajula and F. Gao S. Germani and A. Giri and R. A. Gomes M. C. Goodman and V. Grichine and M. Groh R. Group and D. Grover and B. Guo A. Habig and F. Hakl and J. Hartnell R. Hatcher and A. Hatzikoutelis and K. Heller A. Himmel and A. Holin and B. Howard J. Huang and J. Hylen and F. Jediny M. Judah and I. Kakorin and D. Kalra D. M. Kaplan and R. Keloth and O. Klimov L. W. Koerner and L. Kolupaeva and S. Kotelnikov I. Kourbanis and A. Kreymer and Ch. Kulenberg A. Kumar and C. Kuruppu and V. Kus T. Lackey and K. Lang and S. Lin M. Lokajicek and J. Lozier and S. Luchuk K. Maan and S. Magill and W. A. Mann M. L. Marshak and V. Matveev and D. P. Méndez M. D. Messier and H. Meyer and T. Miao W. H. Miller and S. R. Mishra and A. Mislivec R. Mohanta and A. Moren and L. Mualem M. Muether and S. Mufson and R. Murphy J. Musser and D. Naples and N. Nayak J. K. Nelson and R. Nichol and E. Niner A. Norman and T. Nosek and Y. Oksuzian A. Olshevskiy and T. Olson and J. Paley R. B. Patterson and G. Pawloski and D. Pershey O. Petrova and R. Petti and S. Phan-Budd R. K. Plunkett and B. Potukuchi and C. Principato F. Psihas and A. Radovic and R. A. Rameika B. Rebel and P. Rojas and V. Ryabov K. Sachdev and O. Samoylov and M. C. Sanchez J. Sepulveda-Quiroz and P. Shanahan and A. Sheshukov P. Singh and V. Singh and E. Smith J. Smolik and P. Snopok and N. Solomey E. Song and A. Sousa and K. Soustruznik M. Strait and L. Suter and R. L. Talaga P. Tas and R. B. Thayyullathil and J. Thomas E. Tiras and S. C. Tognini and D. Torbunov J. Tripathi and A. Tsaris and Y. Torun J. Urheim and P. Vahle and J. Vasel L. Vinton and P. Vokac and A. Vold T. Vrba and B. Wang and T. K. Warburton M. Wetstein and D. Whittington and S. G. Wojcicki J. Wolcott and S. Yang and S. Yu J. Zalesak and B. Zamorano and R. Zwaska},
  journal= {arXiv preprint arXiv:1806.00096},
  year   = {2018}
}