Updated constraints on sterile neutrino mixing in the OPERA experiment using a new nu(e) identification method

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.; Jakovčć, K.; Jollet, C.; Kamiscioglu, ÇAĞIN; Kamiscioglu, M.; Kim, S.H.; Kitagawa, N.; Kliček, 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.; Stipčevic, 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.

doi:10.1093/ptep/ptad012

Updated constraints on sterile neutrino mixing in the OPERA experiment using a new nu(e) identification method

Atıf İçin Kopyala

Agafonova N., Alexandrov A., Anokhina A., Aoki S., Ariga A., Ariga T., ...Daha Fazla

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS, cilt.2023, sa.3, 2023 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 2023 Sayı: 3
Basım Tarihi: 2023
Doi Numarası: 10.1093/ptep/ptad012
Dergi Adı: PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Applied Science & Technology Source, INSPEC, zbMATH, Directory of Open Access Journals
Ankara Üniversitesi Adresli: Evet

Özet

This paper describes a new v(e) identification method specifically designed to improve the low-energy (< 30 GeV) nu(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 nu(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 nu(e) candidate is found. The analysis combined with the nu(tau) appearance results improves the upper limit on sin (2)2 theta(mu e) to 0.016 at 90% C.L. in the Mini-BooNE allowed region Delta m(41)(2) similar to 0.3 eV(2).