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29 March 2024
 
  » arxiv » 1906.4907

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First measurement of neutrino oscillation parameters using neutrinos and antineutrinos by NOvA
NOvA Collaboration ; M. A. Acero ; P. Adamson ; L. Aliaga ; T. Alion ; V. Allakhverdian ; S. Altakarli ; N. Anfimov ; A. Antoshkin ; A. Aurisano ; A. Back ; C. Backhouse ; M. Baird ; N. Balashov ; P. Baldi ; B. A. Bambah ; S. Bashar ; K. Bays ; S. Bending ; R. Bernstein ; V. Bhatnagar ; B. Bhuyan ; J. Bian ; T. Blackburn ; J. Blair ; A. C. Booth ; P. Bour ; C. Bromberg ; N. Buchanan ; A. Butkevich ; S. Calvez ; M. Campbell ; T. J. Carroll ; E. Catano-Mur ; A. Cedeno ; S. Childress ; B. C. Choudhary ; B. Chowdhury ; T. E. Coan ; M. Colo ; J. Cooper ; L. Corwin ; L. Cremonesi ; G. S. Davies ; P. F. Derwent ; P. Ding ; Z. Djurcic ; D. Doyle ; E. C. Dukes ; H. Duyang ; S. Edayath ; R. Ehrlich ; M. Elkins ; G. J. Feldman ; P. Filip ; 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 ; J. Hewes ; 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 ; M. Martinez-Casales ; V. Matveev ; D. P. Mendez ; M. D. Messier ; H. Meyer ; T. Miao ; W. H. Miller ; S. R. Mishra ; A. Mislivec ; R. Mohanta ; A. Moren ; L. Mualem ; M. Muether ; S. Mufson ; K. Mulder ; R. Murphy ; J. Musser ; D. Naples ; N. Nayak ; J. K. Nelson ; R. Nichol ; G. Nikseresht ; E. Niner ; A. Norman ; T. Nosek ; A. Olshevskiy ; T. Olson ; J. Paley ; R. B. Patterson ; G. Pawloski ; D. Pershey ; O. Petrova ; R. Petti ; D. D. Phan ; R. K. Plunkett ; B. Potukuchi ; C. Principato ; F. Psihas ; A. Radovic ; V. Raj ; R. A. Rameika ; B. Rebel ; P. Rojas ; V. Ryabov ; O. Samoylov ; M. C. Sanchez ; S. Sanchez Falero ; 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 ; A. Sutton ; R. L. Talaga ; B. Tapia Oregui ; 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 ; M. Wallbank ; B. Wang ; T. K. Warburton ; M. Wetstein ; M. While ; D. Whittington ; S. G. Wojcicki ; J. Wolcott ; N. Yadav ; A. Yallappa Dombara ; K. Yonehara ; S. Yu ; S. Zadorozhnyy ; J. Zalesak ; B. Zamorano ; R. Zwaska ;
Date 12 Jun 2019
AbstractThe NOvA experiment has made a $4.4sigma$-significant observation of $ar u_{e}$ appearance in a 2 GeV $ar u_{mu}$ beam at a distance of 810 km. Using $12.33 imes10^{20}$ protons on target delivered to the Fermilab NuMI neutrino beamline, the experiment recorded 27 $ar u_{mu} ightarrow ar u_{e}$ candidates with a background of 10.3 and 102 $ar u_{mu} ightarrow ar u_{mu}$ candidates. This new antineutrino data is combined with neutrino data to measure the oscillation parameters $|Delta m^2_{32}| = 2.48^{+0.11}_{-0.06} imes10^{-3}$ eV$^2/c^4$, $sin^2 heta_{23} = 0.56^{+0.04}_{-0.03}$ in the normal neutrino mass hierarchy and upper octant and excludes most values near $delta_{ m CP}=pi/2$ for the inverted mass hierarchy by more than 3$sigma$. The data favor the normal neutrino mass hierarchy by 1.9$sigma$ and $ heta_{23}$ values in the upper octant by 1.6$sigma$.
Source arXiv, 1906.4907
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