Combined Sensitivity of T2K-II and NOνA Experiments to CP Violation in Lepton Sector

Tran Van Ngoc, Cao Van Son, Nguyen Thi Hong Van

Abstract


In this paper, we study the combined sensitivity of T2K-II and NOvA, the world leading long-baseline neutrino oscillation experiments, to CP violation in lepton sector. By operating until the year 2026, T2K-II is expected to collect a total exposure of \(20 \times 10^{21}\) protons-on-target. Meanwhile, NO$\nu$A experiment plan to expend the run up to 2024. By combining T2K-II and NO\(\nu\)A with an ultimate constraint from reactor, the sensitivity to CP-violation is expected to exceed $4\sigma$ C.L. It is also pointed out that by reducing the systematic uncertainties of both T2K-II and NO$\nu$A to a level of  2\%, the sensitivity to CP-violation will significantly increase with a discovery possibility at 5$\sigma$ C.L. significance for a particular range of true \(\delta_{CP}\).


Keywords


CP violation, neutrinos, T2K experiment, NOvA experiment

Full Text:

PDF

References


B. T. Cleveland, Timothy Daily, Raymond Davis, Jr., James R. Distel, Kenneth Lande, C. K. Lee, Paul S. Wilden- hain, and Jack Ullman. Measurement of the solar electron neutrino flux with the Homestake chlorine detector. Astrophys. J., 496:505–526, 1998.

K. S. Hirata et al. Experimental Study of the Atmospheric Neutrino Flux. Phys. Lett., B205:416, 1988. [,447(1988)].

B. Pontecorvo. Mesonium and anti-mesonium. Sov. Phys. JETP, 6:429, 1957. [Zh. Eksp. Teor. Fiz.33,549(1957)].

Ziro Maki, Masami Nakagawa, and Shoichi Sakata. Remarks on the unified model of elementary particles. Prog. Theor. Phys., 28:870–880, 1962. [,34(1962)].

Y. Fukuda et al. Evidence for oscillation of atmospheric neutrinos. Phys. Rev. Lett., 81:1562–1567, 1998.

Q. R. Ahmad et al. Measurement of the rate of νe + d → p + p + e− interactions produced by 8 B solar neutrinos at the Sudbury Neutrino Observatory. Phys. Rev. Lett., 87:071301, 2001.

C. Patrignani et al. Review of Particle Physics. Chin. Phys., C40(10):100001, 2016.

K. Abe et al. Neutrino oscillation physics potential of the T2K experiment. PTEP, 2015(4):043C01, 2015.

Jiro Arafune, Masafumi Koike, and Joe Sato. CP violation and matter effect in long baseline neutrino oscillation experiments. Phys. Rev., D56:3093–3099, 1997. [Erratum: Phys. Rev.D60,119905(1999)].

K. A. Olive et al. Review of Particle Physics. Chin. Phys., C38:090001, 2014.

Y. Itow et al. The JHF-Kamioka neutrino project. In Neutrino oscillations and their origin, 2001, pages 239–248, 2001.

K. Abe et al. Observation of Electron Neutrino Appearance in a Muon Neutrino Beam. Phys. Rev. Lett.,112:061802, 2014.

S. V. Cao. Latest results from T2K. In Moriond EW 2018, La Thuile, Italy, March 2018, 2018.

Ko Abe et al. Sensitivity of the T2K accelerator-based neutrino experiment with an Extended run to 20 × 10^21POT. 2016.

Patrick Huber, Manfred Lindner, and Walter Winter. Superbeams versus neutrino factories. Nucl. Phys., B645:3–48, 2002.

D. S. Ayres et al. NOvA: Proposal to Build a 30 Kiloton Off-Axis Detector to Study νμ → νe Oscillations in the

NuMI Beamline. 2004.

A. Aurisano, A. Radovic, D. Rocco, A. Himmel, M. D. Messier, E. Niner, G. Pawloski, F. Psihas, A. Sousa, and P. Vahle. A Convolutional Neural Network Neutrino Event Classifier. JINST, 11(09):P09001, 2016.

M. A. Acero et al. New constraints on oscillation parameters from νe appearance and νμ disappearance in the NOvA experiment. 2018.

Mayly Sanchez. Nova results and prospects, June 2018.

F. P. An et al. New Measurement of Antineutrino Oscillation with the Full Detector Configuration at Daya Bay.Phys. Rev. Lett., 115(11):111802, 2015.

JunCaoandKam-BiuLuk.AnoverviewoftheDayaBayReactorNeutrinoExperiment.Nucl.Phys.,B908:62–73, 2016.




DOI: https://doi.org/10.15625/0868-3166/28/4/12930 Display counter: Abstract : 220 views. PDF : 144 views.

Refbacks

  • There are currently no refbacks.




Editorial Office:

Communications in Physics

1st Floor, A16 Building, 18B Hoang Quoc Viet Street, Cau Giay District, Hanoi, Vietnam

Tel: (+84) 024 3791 7102 

Email: cip@vjs.ac.vn

Copyright by