Probing matter effects with neutrino long baseline experiments

Mohan Narayan; S. Uma Sankar

doi:10.1103/PhysRevD.61.013003

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Probing matter effects with neutrino long baseline experiments

Mohan Narayan and S. Uma Sankar

Department of Physics, I.I.T., Powai, Mumbai 400076, India

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Phys. Rev. D 61, 013003 – Published 6 December, 1999

DOI: https://doi.org/10.1103/PhysRevD.61.013003

Abstract

We consider $ν_{μ} \to ν_{e}$ oscillations in long baseline experiments within a three flavor oscillation framework. A non-zero measurement of this oscillation probability implies that the $(13)$ mixing angle $φ$ is non-zero. We consider the effect of neutrino propagation through the matter of Earth’s crust and show that, given the constraints from solar neutrino and CHOOZ data, matter effects enhance the mixing for neutrinos rather than for anti-neutrinos. We need data from two different experiments with different baseline lengths (such as K2K and MINOS) to discern the effect of the matter term.

References (16)

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M. Narayan, M. V. N. Murthy, G. Rajasekaran, and S. Uma Sankar, Phys. Rev. D 53, 2809 (1996).
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[c1] Super-Kamiokande Collaboration, Y. Fukuda et al., Phys. Rev. Lett. 81, 1562 (1998).

[c2] Super-Kamiokande Collaboration, Y. Fukuda et al., Phys. Rev. Lett. 82, 1810 (1999).

[c3] M. Narayan, M. V. N. Murthy, G. Rajasekaran, and S. Uma Sankar, Phys. Rev. D 53, 2809 (1996).

[c4] G. Fogli, E. Lisi, and D. Montanino, Phys. Rev. D 54, 2048 (1996).

[c5] Particle Data Group, C. Caso et al., Eur. Phys. J. C 3, 1 (1998), p. 23.

[c6] T. K. Kuo and J. Pantaleone, Rev. Mod. Phys. 61, 937 (1989).

[c7] G. Fogli, E. Lisi, D. Montanino, and G. Scoscia, Phys. Rev. D 55, 4385 (1997), especially Appendix C.

[c8] J. Pantaleone, Phys. Rev. D 49, R2152 (1994).

[c9] CHOOZ Collaboration, M. Appolonio et al., Phys. Lett. B 420, 397 (1998).

[c10] M. Narayan, G. Rajasekaran, and S. Uma Sankar, Phys. Rev. D 58, 031301 (1998).

[c11] J. Pantaleone, Phys. Rev. Lett. 81, 5060 (1998).

[c12] Y. Oyama, talk presented at YITP workshop on flavor physics, Kyoto, 1998; hep-ex/9803014.

[c13] L. Wolfenstein, Phys. Rev. D 17, 2369 (1978); ibid.20, 2634 (1979).

[c14] S. P. Mikheyev and A. Yu. Smirnov, Yad. Fiz. 42, 1441 (1985) [Sov. J. Nucl. Phys. 42, 913 (1985)]; Nuovo Cimento C 9, 17 (1986).

[c15] A. S. Joshipura and M. V. N. Murthy, Phys. Rev. D 37, 1374 (1988).

[c16] P. Lipari, Phys. Rev. D (to be published), hep-ph/9903481.

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Probing matter effects with neutrino long baseline experiments

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