학술논문
Updated constraints on sterile neutrino mixing in the OPERA experiment using a new [v.sub.e] identification method
Document Type
Academic Journal
Author
Agafonova, N.; Alexandrov, A.; Anokhina, A.; Aoki, S.; Ariga, A.; Ariga, T.; Bertolin, A.; Bozza, C.; Brugnera, R.; Buontempo, S.; Chernyavskiy, M.; Chukanov, A.; Consiglio, L.; D'ambrosio, N.; De Lellis, G.; De Serio, M.; Del Amo Sanchez, P.; Di Crescenzo, A.; Di Ferdinando, D.; Di Marco, N.; Dmitrievsky, S.; Dracos, M.; Duchesneau, D.; Dusini, S.; Dzhatdoev, T.; Ebert, J.; Ereditato, A.; Fini, R.A.; Fukuda, T.; Galati, G.; Garfagnini, A.; Gentile, V.; Goldberg, J.; Gorbunov, S.; Gornushkin, Y.; Grella, G.; Guler, A.M.; Gustavino, C.; Hagner, C.; Hara, T.; Hayakawa, T.; Hollnagel, A.; Ishiguro, K.; Iuliano, A.; Jakovcc, K.; Jollet, C.; Kamiscioglu, C.; Kamiscioglu, M.; Kim, S.H.; Kitagawa, N.; Klicek, B.; Kodama, K.; Komatsu, M.; Kose, U.; Kreslo, I.; Laudisio, F.; Lauria, A.; Longhin, A.; Loverre, P.; Malgin, A.; Mandrioli, G.; Matsuo, T.; Matveev, V.; Mauri, N.; Medinaceli, E.; Meregaglia, A.; Mikado, S.; Miyanishi, M.; Mizutani, F.; Monacelli, P.; Montesi, M.C.; Morishima, K.; Muciaccia, M.T.; Naganawa, N.; Naka, T.; Nakamura, M.; Nakano, T.; Niwa, K.; Ogawa, S.; Okateva, N.; Ozaki, K.; Paoloni, A.; Paparella, L.; Park, B.D.; Pasqualini, L.; Pastore, A.; Patrizii, L.; Pessard, H.; Podgrudkov, D.; Polukhina, N.; Pozzato, M.; Pupilli, F.; Roda, M.; Roganova, T.; Rokujo, H.; Rosa, G.; Ryazhskaya, O.; Sato, O.; Schembri, A.; Shakiryanova, I.; Shchedrina, T.; Shibayama, E.; Shibuya, H.; Shiraishi, T.; Simone, S.; Sirignano, C.; Sirri, G.; Sotnikov, A.; Spinetti, M.; Stanco, L.; Starkov, N.; Stellacci, S.M.; Stipcevic, M.; Strolin, P.; Takahashi, S.; Tenti, M.; Terranova, F.; Tioukov, V.; Tufanli, S.; Vasina, S.; Vilain, P.; Voevodina, E.; Votano, L.; Vuilleumier, J.L.; Wilquet, G.; Yoon, C.S.
Source
Progress of Theoretical and Experimental Physics. March, 2023, Vol. 2023 Issue 3, p1r, 12 p.
Subject
Language
English
Abstract
This paper describes a new [v.sub.e] identification method specifically designed to improve the low-energy (< 30 GeV) [v.sub.e] identification efficiency attained by enlarging the emulsion film scanning volume with the next-generation emulsion readout system. A relative increase of 25-70% in the [v.sub.e] low-energy region is expected, leading to improvements in the OPERA sensitivity to neutrino oscillations in the framework of the 3 + 1 model. The method is applied to a subset of data where the detection efficiency increase is expected to be more relevant, and one additional [v.sub.e] candidate is found. The analysis combined with the [v.sub.[tau]] appearance results improves the upper limit on [sin.sup.2]2[[theta].sub.[mu]e] to 0.016 at 90% C. L. in the Mini-BooNE allowed region [DELTA][m.sup.2.sub.41] ~ 0.3e[V.sup.2]. Subject Index C04, C32
1. Introduction Oscillations among three neutrino flavors have been established by solar, atmospheric, reactor, and long-baseline accelerator neutrino experiments [1-7] over the last two decades. On the other hand, the [...]
1. Introduction Oscillations among three neutrino flavors have been established by solar, atmospheric, reactor, and long-baseline accelerator neutrino experiments [1-7] over the last two decades. On the other hand, the [...]