Measurement of Neutrino-Induced Neutral-Current Coherent $π^0$ Production in the NOvA Near Detector
M. A. Acero, P. Adamson, L. Aliaga, T. Alion, V. Allakhverdian, N. Anfimov, A. Antoshkin, E. Arrieta-Diaz, A. Aurisano, A. Back, C. Backhouse, M. Baird, N. Bala… 展开作者
M. A. Acero, P. Adamson, L. Aliaga, T. Alion, V. Allakhverdian, N. Anfimov, A. Antoshkin, E. Arrieta-Diaz, A. Aurisano, A. Back, C. Backhouse, M. Baird, N. Balashov, P. Baldi, B. A. Bambah, S. Basher, K. Bays, B. Behera, S. Bending, R. Bernstein, V. Bhatnagar, B. Bhuyan, J. Bian, J. Blair, A. C. Booth, A. Bolshakova, P. Bour, C. Bromberg, N. Buchanan, A. Butkevich, M. Campbell, T. J. Carroll, E. Catano-Mur, S. Childress, B. C. Choudhary, B. Chowdhury, T. E. Coan, M. Colo, L. Corwin, L. Cremonesi, D. Cronin-Hennessy, G. S. Davies, P. F. Derwent, P. Ding, Z. Djurcic, D. Doyle, E. C. Dukes, P. Dung, H. Duyang, S. Edayath, R. Ehrlich, G. J. Feldman, W. Flanagan, M. J. Frank, H. R. Gallagher, R. Gandrajula, F. Gao, S. Germani, A. Giri, R. A. Gomes, M. C. Goodman, V. Grichine, M. Groh, R. Group, B. Guo, A. Habig, F. Hakl, J. Hartnell, R. Hatcher, A. Hatzikoutelis, K. Heller, A. Himmel, A. Holin, B. Howard, J. Huang, J. Hylen, F. Jediny, C. Johnson, M. Judah, I. Kakorin, D. Kalra, D. M. Kaplan, R. Keloth, O. Klimov, L. W. Koerner, L. Kolupaeva, S. Kotelnikov, A. Kreymer, Ch. Kulenberg, A. Kumar, C. D. Kuruppu, V. Kus, T. Lackey, K. Lang, S. Lin, M. Lokajicek, J. Lozier, S. Luchuk, K. Maan, S. Magill, W. A. Mann, M. L. Marshak, V. Matveev, D. P. Méndez, M. D. Messier, H. Meyer, T. Miao, W. H. Miller, S. R. Mishra, A. Mislivec, R. Mohanta, A. Moren, L. Mualem, M. Muether, K. Mulder, S. Mufson, R. Murphy, J. Musser, D. Naples, N. Nayak, J. K. Nelson, R. Nichol, E. Niner, A. Norman, T. Nosek, Y. Oksuzian, A. Olshevskiy, T. Olson, J. Paley, R. B. Patterson, G. Pawloski, D. Pershey, O. Petrova, R. Petti, R. K. Plunkett, B. Potukuchi, C. Principato, F. Psihas, V. Raj, A. Radovic, R. A. Rameika, B. Rebel, P. Rojas, V. Ryabov, K. Sachdev, O. Samoylov, M. C. Sanchez, I. S. Seong, P. Shanahan, A. Sheshukov, P. Singh, V. Singh, E. Smith, J. Smolik, P. Snopok, N. Solomey, E. Song, A. Sousa, K. Soustruznik, M. Strait, L. Suter, R. L. Talaga, P. Tas, R. B. Thayyullathil, J. Thomas, E. Tiras, D. Torbunov, J. Tripathi, A. Tsaris, Y. Torun, J. Urheim, P. Vahle, J. Vasel, L. Vinton, P. Vokac, T. Vrba, B. Wang, T. K. Warburton, M. Wetstein, M. While, D. Whittington, S. G. Wojcicki, J. Wolcott, N. Yadav, A. Yallappa Dombara, S. Yang, K. Yonehara, S. Yu, J. Zalesak, B. Zamorano, R. Zwaska
The cross section of neutrino-induced neutral-current coherent $π^0$ production on a carbon-dominated target is measured in the NOvA near detector. This measurement uses a narrow-band neutrino beam with an average neutrino energy of 2.7\,GeV, which is of interest to ongoing and future long-baseline neutrino oscillation experiments. The measured, flux-averaged cross section is $σ= 13.8\pm0.9 (\text{stat})\pm2.3 (\text{syst}) \times 10^{-40}\,\text{cm}^2/\text{nucleus}$, consistent with model prediction. This result is the most precise measurement of neutral-current coherent $π^0$ production in the few-GeV neutrino energy region.
Measurement of $π^0$ Production in $\barν_μ$ Charged-Current Interactions in the NOvA Near Detector
Erciyes University（埃尔齐耶斯大学）；Universidad del Atlantico（大西洋大学）；University of Mississippi（密西西比大学）；Fermi National Accelerator Laboratory（费米国家加速器实验室）；Joint Institute for Nuclear Research（苏联联合核研究所）；Universidad del Magdalena（马格达莱纳大学）；University of Sussex（萨塞克斯大学）；University of Cincinnati（辛辛那提大学）；Indiana University（印第安纳大学）；Iowa State University（爱荷华州立大学）；University of California at Irvine（加州大学尔湾分校）；University of Hyderabad（海得拉巴大学）
Search for active-sterile antineutrino mixing using neutral-current interactions with the NOvA experiment
这封信报告的结果，从第一个长基线搜索无菌反中微子混合在加速器为基础的反中微子为主的光束。在两个NOvA探测器，在距离1公里和810公里的光束源，中性电流相互作用的速率进行了分析，使用曝光的$12.51\times10^{20}$质子对目标从NuMI光束在费米实验室运行在反中微子模式。在远探测器处观察到中性电流候选者的总共$121$，与预测的$122\pm11$（统计）相比，$\pm15$（系统）假设在三种活性风味剂之间混合。没有观察到$\barν_μ\rightarrow\barν_{s}$振荡的证据。在3+1模型中解释该结果，在90% C. L.处对混合角$θ_{24} < 25^{\circ}$和$θ_{34} < 32^{\circ}$施加约束。对于$0.05$ eV $^{2} \leq Δm^{2}_{41} \leq 0.5$ eV $^{2}$，指在近检测器处不产生显著振荡的质量分裂范围。这是使用长基线加速器反中微子设定的第一个3+1置信限。
Measuring Active-to-Sterile Neutrino Oscillations with Neutral Current Coherent Neutrino-Nucleus Scattering
轻无菌中微子已经被引入，作为$Δm^2 \sim 1$ eV $^2$处的许多振荡信号的解释。在相对较短的基线上的中微子振荡提供了对这些可能的新状态的探测。本文描述了一个基于加速器的实验，利用中性流相干中微子-核散射来严格搜索活跃到无菌的中微子振荡。因此，这个实验可以明确地确定无菌中微子的存在，并对它们的混合参数提供限制。基于回旋加速器的质子束可以被引导到多个目标，产生低能π介子和μ介子衰变静止中微子源，与单个检测器的距离可变。两种类型的探测器被认为是：基于锗的探测器的灵感来自CDMS的设计和液氩探测器的灵感来自拟议的CLEAR实验。
Axial-vector neutral-current measurements in coherent elastic neutrino-nucleus scattering experiments
Universidad Técnica Federico Santa María（智利技术费德里科·圣玛丽亚大学）；Instituto de Física Corpuscular (CSIC-Universitat de València)（粒子物理研究所（西班牙国家研究委员会-瓦伦西亚大学））；University of Hamburg（汉堡大学）
