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10 years from now reactor neutrino experiments will attempt to determine which neutrino mass eigenstate is the most massive. In this letter we present the results of more than seven million detailed simulations of such experiments, studying…

High Energy Physics - Phenomenology · Physics 2013-09-16 Emilio Ciuffoli , Jarah Evslin , Xinmin Zhang

Assuming lepton number conservation, hermiticity of the neutrino mass matrix and $\nu_{\mu} - \nu_{\tau}$ exchange symmetry, we show that we can determine the neutrino mass matrix completely from the existing data. Comparing with the…

High Energy Physics - Phenomenology · Physics 2014-05-26 Shreyashi Chakdar , Kirtiman Ghosh , S. Nandi

In this work, we study the appearance of neutrino asymmetries during the expansion of the Universe. A mathematical model based on differential equations was used to describe the processes of neutrino oscillations considering CP violation…

High Energy Physics - Phenomenology · Physics 2024-02-29 A. P Serebrov , O. M. Zherebtsov , R. M. Samoilov , N. S. Budanov

New physics beyond the Standard Model could appear at long baseline oscillation experiments as non-standard interactions (NSI) between neutrinos and matter. If so, determination of the CP-violating phase $\delta_{13}$ is ambiguous due to…

High Energy Physics - Phenomenology · Physics 2018-10-01 Jeffrey M. Hyde

We calculate the running of low-energy neutrino parameters from the bottom up, parameterizing the unknown seesaw parameters in terms of the dominance matrix $R$. We find significant running only if the $R$ matrix is non-trivial and the…

High Energy Physics - Phenomenology · Physics 2009-09-11 John Ellis , Andi Hektor , Mario Kadastik , Kristjan Kannike , Martti Raidal

We further study the "complementary" Ansatz, Tr$(M_\nu)$=0, for a prediagonal light Majorana type neutrino mass matrix. Previously, this was studied for the CP conserving case and the case where the two Majorana type CP violating phases…

High Energy Physics - Phenomenology · Physics 2009-11-10 Samina S. Masood , Salah Nasri , Joseph Schechter

We study the CP violation effects from two types of neutrino mass matrices with (i) $(M_\nu)_{ee}=0$, and (ii) $(M_\nu)_{ee}=(M_\nu)_{e\mu}=0$, which can be realized by the high dimensional lepton number violating operators $\bar…

High Energy Physics - Phenomenology · Physics 2016-01-20 Chao-Qiang Geng , Da Huang , Lu-Hsing Tsai

We derive renormalization group equations for neutrino masses, leptonic mixing angles and CP-violating phases running at energies above the seesaw threshold, both in the Standard Model and in the Minimal Supersymmetric Standard Model…

High Energy Physics - Phenomenology · Physics 2009-11-11 Jianwei Mei

We explore as clearly as possible the features of neutrino oscillation which are relevant for measurements of the CP violating Kobayashi-Maskawa phase delta and the sign of \Delta m^2_{13}. We focus on the so called low-energy option and…

High Energy Physics - Phenomenology · Physics 2010-02-03 Hisakazu Minakata , Hiroshi Nunokawa

The measurement of the mixing angle \theta_{13}, sign of \Delta m^2_{13} and the CP or T violating phase \delta is fraught with ambiguities in neutrino oscillation. In this paper we give an analytic treatment of the paramater degeneracies…

High Energy Physics - Phenomenology · Physics 2009-11-07 Hisakazu Minakata , Hiroshi Nunokawa , Stephen Parke

The effects of CP-phases on the three absolute quasi-degenerate Majorana neutrino (QDN) masses are stud-ied with neutrino mass matrices obeying {\mu} - {\tau} symmetry for normal as well as inverted hierarchical mass patterns. We have made…

High Energy Physics - Phenomenology · Physics 2012-06-18 Ng. K. Francis , N. Nimai Singh

Recently a new method for determining the neutrino mass hierarchy by comparing the effective values of the atmospheric \Delta m^2 measured in the electron neutrino disappearance channel, \Delta m^2(ee), with the one measured in the muon…

High Energy Physics - Phenomenology · Physics 2008-11-26 H. Minakata , H. Nunokawa , S. J. Parke , R. Zukanovich Funchal

In view of recent measurements of the mixing angle \theta_{13} a possibility to determine the difference of two CP Majorana phases of the neutrino mixing matrix from the study of neutrinoless double-beta decay is investigated. We show that…

High Energy Physics - Phenomenology · Physics 2015-06-11 F. Simkovic , S. M. Bilenky , Amand Faessler , Th. Gutsche

We propose to measure the CP phase $\delta_{\rm CP}$, the magnitude of the neutrino mixing matrix element $|U_{e3}|$ and the sign of the atmopheric scale mass--squared difference $\Delta{\rm m}^2_{31}$ with a superbeam by the joint analysis…

High Energy Physics - Phenomenology · Physics 2009-11-07 K. Whisnant , Jin Min Yang , Bing-Lin Young

We explore the physics potential of multi-megaton scale ice or water Cherenkov detectors with low ($\sim 1$ GeV) threshold. Using some proposed characteristics of the PINGU detector setup we compute the distributions of events versus…

High Energy Physics - Phenomenology · Physics 2013-04-29 E. Kh. Akhmedov , Soebur Razzaque , A. Yu. Smirnov

We consider a scenario where, along with the usual Higgs doublet, two scalar triplets are present. The extension of the triplet sector is required for the Type~II mechanism for the generation of neutrino masses, if this mechanism has to…

High Energy Physics - Phenomenology · Physics 2016-05-11 Avinanda Chaudhuri , Biswarup Mukhopadhyaya

Precision measurement of the neutrino mixing parameters and the determination of mass hierarchy are the primary goals of the present and upcoming neutrino experiments. In this work, we study the sensitivity of T2K,NO$\nu$A and LBNE…

High Energy Physics - Phenomenology · Physics 2015-06-22 K. N. Deepthi , C. Soumya , R. Mohanta

Crucial developments in neutrino physics would be the determination of the mass hierarchy (MH) and measurement of the CP phase in the leptonic sector. The patterns of the transition probabilities $P(\nu_\mu \rightarrow \nu_\tau)$ and…

High Energy Physics - Phenomenology · Physics 2017-04-27 Ahmed Rashed , Alakabha Datta

In the overlap region, for the normal and inverted hierarchies, of the neutrino-antineutrino bi-probability space for $\nu_\mu \to \nu_e$ appearance, we derive a simple identity between the solutions in the ($\sin^2 2\theta_{13}$, $\sin…

High Energy Physics - Phenomenology · Physics 2008-11-26 Olga Mena , Stephen Parke

We propose the indirect search for the CP violating phase in the long baseline $\n_\m \Ar\n_e$ oscillation experiment, in which two scenarios of the neutrino mass hierarchy are discussed in the three family model. The CP violatig phase…

High Energy Physics - Phenomenology · Physics 2014-11-17 Morimitsu Tanimoto