Measurement of Atmospheric Neutrino Mixing with Improved IceCube DeepCore Calibration and Data Processing

• DOI: 10.48550/arxiv.2304.12236
• Publication Date: 2023-07-20
• Authors: Abbasi, R.; Ackermann, Markus; Adams, J.; Agarwalla, S. K.; Aguilar, J. A.; Ahlers, M.; Alameddine, J. M.; Amin, N. M.; Andeen, K.; Anton, G.; Argüelles, C.; Ashida, Y.; Athanasiadou, S.; Axani, S. N.; Bai, X.; Balagopal, V. A.; Baricevic, M.; Barwick, S. W.; Basu, V.; Bay, R.; Beatty, J. J.; Becker, K.-H.; Becker Tjus, J.; Beise, J.; Bellenghi, C.; Benning, C.; BenZvi, S.; Berley, D.; Bernardini, E.; Besson, D. Z.; Binder, G.; Blaufuss, E.; Blot, S.; Bontempo, F.; Book, J. Y.; Boscolo Meneguolo...; Böser, S.; Botner, O.; Böttcher, J.; Bourbeau, E.; Braun, J.; Brinson, B.; Brostean-Kaiser, J.; Burley, R. T.; Busse, R. S.; Butterfield, D.; Campana, M. A.; Carloni, K.; Carnie-Bronca, E. G.; Chattopadhyay, S.; Chau, N.; Chen, C.; Chen, Z.; Chirkin, D.; Choi, S.; Clark, B. A.; Classen, L.; Coleman, A.; Collin, G. H.; Connolly, A.; Conrad, J. M.; Coppin, P.; Correa, P.; Countryman, S.; Cowen, D. F.; Dave, P.; De Clercq, C.; DeLaunay, J. J.; Delgado, D.; Dembinski, H.; Deng, S.; Deoskar, K.; Desai, A.; Desiati, P.; de Vries, K. D.; de Wasseige, G.; DeYoung, T.; Diaz, A.; Díaz-Vélez, J. C.; Dittmer, M.; Domi, A.; Dujmovic, H.; DuVernois, M. A.; Ehrhardt, T.; Eller, P.; Mentawi, S. El; Engel, R.; Erpenbeck, H.; Evans, J.; Evenson, P. A.; Fan, K. L.; Fang, K.; Farrag, K.; Fazely, A. R.; Fedynitch, A.; Feigl, N.; Fiedlschuster, S.; Finley, C.; Fischer, Leander; Fox, D.; Franckowiak, A.; Friedman, E.; Fritz, A.; Fürst, P.; Gaisser, T. K.; Gallagher, J.; Ganster, E.; Garcia, A.; Gerhardt, L.; Ghadimi, A.; Glaser, C.; Glauch, T.; Glüsenkamp, T.; Goehlke, N.; Gonzalez, J. G.; Goswami, S.; Grant, D.; Gray, S. J.; Gries, O.; Griffin, S.; Griswold, S.; Günther, C.; Gutjahr, P.; Haack, C.; Hallgren, A.; Halliday, R.; Halve, L.; Halzen, F.; Hamdaoui, H.; Ha Minh, M.; Hanson, K.; Hardin, J.; Harnisch, A. A.; Hatch, P.; Haungs, A.; Helbing, K.; Hellrung, J.; Henningsen, F.; Heuermann, L.; Heyer, N.; Hickford, S.; Hidvegi, A.; Hignight, J.; Hill, C.; Hill, G. C.; Hoffman, K. D.; Hori, S.; Hoshina, K.; Hou, W.; Huber, T.; Hultqvist, K.; Hünnefeld, M.; Hussain, R.; Hymon, K.; In, S.; Ishihara, A.; Jacquart, M.; Janik, O.; Jansson, M.; Japaridze, G. S.; Jeong, M.; Jin, M.; Jones, B. J. P.; Kang, D.; Kang, W.; Kang, X.; Kappes, A.; Kappesser, D.; Kardum, L.; Karg, T.; Karl, M.; Karle, A.; Katz, U.; Kauer, M.; Kelley, J. L.; Khatee Zathul, A.; Kheirandish, A.; Kiryluk, J.; Klein, S. R.; Kochocki, A.; Koirala, R.; Kolanoski, H.; Kontrimas, T.; Köpke, L.; Kopper, C.; Koskinen, D. J.; Koundal, P.; Kovacevich, M.; Kowalski, Marek; Kozynets, T.; Krishnamoorthi, J.; Kruiswijk, K.; Krupczak, E.; Kumar, Anil; Kun, E.; Kurahashi, N.; Lad, N.; Gualda, C. Lagunas; Lamoureux, M.; Larson, M. J.; Leonard DeHolton, K.; Liu, Q. R.; Love, C.; Lu, L.; Mancina, S.; Marka, S.; Mead, J. V.; Merckx, Y.; Merten, L.; Naab, R.; Necker, J.; Paudel, E. N.; Pizzuto, A.; Rhode, W.; Rott, C.; Safa, I.; Schlüter, F.; Schumacher, L.; Seikh, M.; Sommani, G.; Spiering, C.; Stuttard, T.; Taboada, I.; Valtonen-Mattila, N.; van Eijndhoven, N.
• Keywords: Physics - Instrumentation and Detectors; Neutrino: flavor; neutrino: flux; Physics, Particles & Fields; High Energy Physics - Experiment; IceCube; Subatomär fysik; High Energy Physics - Experiment (hep-ex); Astronomi, astrofysik och kosmologi; neutrino: atmosphere; Subatomic Physics; Neutrino: mixing angle: measured; Astronomy, Astrophysics and Cosmology; info:eu-repo/classification/ddc/530; physics.ins-det; Physics; ddc:530; Instrumentation and Detectors (physics.ins-det); mass difference: measured; STATISTICS; INVARIANCE; Neutrino: atmosphere; Calibration; Physical Sciences; neutrino: flavor; Neutrino: oscillation; numerical calculations: Monte Carlo; BEHAVIOR; neutrino: mixing angle: measured; accelerator; neutrino: mass difference; Accelerator; FOS: Physical sciences; ISING-MODEL; Astronomy & Astrophysics; 530; info:eu-repo/classification/ddc/500.2; neutrino: energy; Experimental results; Science & Technology; hep-ex; Numerical calculations: Monte Carlo; Neutrino: mixing; Neutrino: flux; calibration; Neutrino: mass difference; Physics and Astronomy; 13. Climate action; neutrino: oscillation; Mass difference: measured; neutrino: mixing; Neutrino: energy; GAUGE-THEORY; experimental results

Published by Inst., Woodbury, NY<br/>Physical review / D 108(1), 012014 (2023). doi:10.1103/PhysRevD.108.012014<br/>We describe a new data sample of IceCube DeepCore and report on the latest measurement of atmospheric neutrino oscillations obtained with data recorded between 2011–2019. The sample includes significant improvements in data calibration, detector simulation, and data processing, and the analysis benefits from a sophisticated treatment of systematic uncertainties, with significantly greater level of detail since our last study. By measuring the relative fluxes of neutrino flavors as a function of their reconstructed energies and arrival directions we constrain the atmospheric neutrino mixing parameters to be sin2θ23=0.51±0.05 and Δm322=2.41±0.07×10-3 eV2, assuming a normal mass ordering. The errors include both statistical and systematic uncertainties. The resulting 40% reduction in the error of both parameters with respect to our previous result makes this the most precise measurement of oscillation parameters using atmospheric neutrinos. Our results are also compatible and complementary to those obtained using neutrino beams from accelerators, which are obtained at lower neutrino energies and are subject to different sources of uncertainties.<br/>