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We explore the possibility of using the recently proposed THEIA detector to measure the $\bar \nu_\mu \rightarrow \bar \nu_e$ oscillation with neutrinos from a muon decay at rest ($\mu$DAR) source to improve the leptonic CP phase…

High Energy Physics - Phenomenology · Physics 2022-07-13 Shao-Feng Ge , Chui-Fan Kong , Pedro Pasquini

We consider a minimal condition that predicts the 1-3 lepton mixing angle $\theta_{13} \simeq \theta_{\rm C}/\sqrt{2}$ with $\theta_{\rm C}$ the Cabibbo angle, and give the improved prediction of $\theta_{13}$. In the case of normal mass…

High Energy Physics - Phenomenology · Physics 2016-01-19 Junpei Harada

We demonstrate the ability to measure the CP-phase of a Higgs boson state by looking at the decays of heavy, Majorana neutrinos in the process $pp \to H \to N N$ at the LHC. This is shown for signals with both opposite-sign ($l^{\pm}…

High Energy Physics - Phenomenology · Physics 2011-08-04 Vernon Barger , Wai-Yee Keung , Brian Yencho

We study all possible texture zeros in the Majorana neutrino mass matrix which are allowed from neutrino oscillation as well as cosmology data when the charged lepton mass matrix is assumed to take the diagonal form. In case of one-zero…

High Energy Physics - Phenomenology · Physics 2015-06-17 Manikanta Borah , Debasish Borah , Mrinal Kumar Das

One of the primary objectives of Deep Underground Neutrino Experiment (DUNE) is to discover the leptonic CP violation and to identify it's source. In this context, we study the impact of non-standard neutrino interactions (NSIs) on…

High Energy Physics - Phenomenology · Physics 2018-10-17 K. N. Deepthi , Srubabati Goswami , Newton Nath

The scattering of solar neutrinos on electrons may reveal their CP properties, which are particularly sensitive to their Majorana nature. The cross section is sensitive to the neutrino dipole moments through an interference of…

High Energy Physics - Phenomenology · Physics 2009-09-17 S. Pastor , J. Segura , V. B. Semikoz , J. W. F. Valle

We have studied the prospects of measuring the CP violating phase with atmospheric neutrinos at a large magnetized iron calorimeter detector considering the muons (directly measurable) of the neutrino events generated by a MonteCarlo event…

High Energy Physics - Phenomenology · Physics 2009-10-16 Abhijit Samanta

The ``Practical Dirac-Majorana Confusion Theorem'' (PDMCT) asserts that phenomenological differences between Dirac and Majorana neutrinos are suppressed by $(m_\nu/E)^2$ in lepton-number-conserving processes, such that at high energy, it is…

High Energy Physics - Phenomenology · Physics 2026-02-26 David Delepine , A. Yebra

The precise determination of the leptonic $CP$-phase is one of the major goals for future generation long Baseline experiments. On the other hand, if new physics beyond the Standard Model exists, a robust determination of such a $CP$-phase…

High Energy Physics - Phenomenology · Physics 2023-11-08 Luis A. Delgadillo , O. G. Miranda

We address some theoretical issues of the quantum decoherence phenomenon within the neutrino oscillation framework and carry out various tests under DUNE simulated experimental environment. On the theoretical side, we provide a general…

High Energy Physics - Phenomenology · Physics 2020-05-20 Jose Carpio , Eduardo Massoni , Alberto Gago

Non-standard interactions (NSI) between neutrinos and matter at long-baseline experiments could make determination of the CP-violating phase $\delta_{13}$ ambiguous due to interference with additional complex phases. Such degeneracies are…

High Energy Physics - Phenomenology · Physics 2019-12-16 Jeffrey M. Hyde

We discuss the Dirac CP violating phase $\delta_{CP}$ in the Froggatt-Nielsen model for a neutrino mass matrix $M_\nu$ imposing a condition ${\rm det} [M_\nu]=0$. This additional condition restricts the CP violating phase $\delta_{CP}$…

High Energy Physics - Phenomenology · Physics 2017-05-17 Yuya Kaneta , Morimitsu Tanimoto , Tsutomu T. Yanagida

We propose a complex extension of mixed $\mu\tau$ antisymmetry in the neutrino Majorana mass matrix $M_\nu$. This can be implemented in the Lagrangian by a generalized CP transformation (labeled by a mixing parameter $\theta$) on the…

High Energy Physics - Phenomenology · Physics 2019-02-27 Roopam Sinha , Probir Roy , Ambar Ghosal

We study the interplay between coherence and mixedness in meson and neutrino systems. The dynamics of the meson system is treated using the open quantum system approach taking into account the decaying nature of the system. Neutrino…

High Energy Physics - Phenomenology · Physics 2019-02-05 Khushboo Dixit , Javid Naikoo , Subhashish Banerjee , Ashutosh Kumar Alok

We propose a strategy for distinguishing the Dirac / Majorana character of heavy neutrinos with masses below the $W$ boson mass, using purely leptonic decays at the LHC. The strategy makes use of a forward-backward asymmetry of the opposite…

High Energy Physics - Phenomenology · Physics 2018-03-14 Carolina Arbelaéz , Claudio Dib , Iván Schmidt , Juan Carlos Vasquez

In this paper we investigate how well the nature of heavy neutral leptons can be determined at a future lepton collider, after its potential discovery. Considered in a simplified model are prompt decays of the neutrino in the mass range…

High Energy Physics - Phenomenology · Physics 2023-12-18 Krzysztof Mękała , Jürgen Reuter , Aleksander Filip Żarnecki

Motivated by recent measurements of a relatively large \theta_{13} in the Daya Bay and RENO reactor neutrino experiments, we carry out a systematic analysis of the hybrid textures of Majorana neutrino mass matrix $M_\nu$, which contain one…

High Energy Physics - Phenomenology · Physics 2013-05-30 Ji-Yuan Liu , Shun Zhou

We give a comprehensive account of our proposed experimental method of using atoms or molecules in order to measure parameters of neutrinos still undetermined; the absolute mass scale, the mass hierarchy pattern (normal or inverted), the…

We derive predictions for the Dirac phase $\delta$ present in the $3\times 3$ unitary neutrino mixing matrix $U = U_e^{\dagger} \, U_{\nu}$, where $U_e$ and $U_{\nu}$ are $3\times 3$ unitary matrices which arise from the diagonalisation,…

High Energy Physics - Phenomenology · Physics 2015-11-10 I. Girardi , S. T. Petcov , A. V. Titov

We consider schemes of neutrino mixing arising within the discrete symmetry approach to the well-known flavour problem. We concentrate on $3\nu$ mixing schemes in which the cosine of the Dirac CP violation phase $\delta_\mathrm{CP}$…

High Energy Physics - Phenomenology · Physics 2018-04-11 Sanjib Kumar Agarwalla , Sabya Sachi Chatterjee , S. T. Petcov , A. V. Titov
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