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The Daya Bay Collaboration (An et al) has recently proclaimed discovery of non-zero reactor angle, $\theta_{13}$, $\sin^{2}2\theta_{13}$=0.092$\pm$0.016(stat)$\pm$0.005(syst), at $5.2\sigma$ which is in conformity with the earlier…

高能物理 - 唯象学 · 物理学 2012-07-17 Surender Verma

Flavour oscillations of sub-GeV atmospheric neutrinos and antineutrinos, traversing different distances inside the Earth, are a promising source of information on the leptonic CP phase $\delta$. In that energy range, the oscillations are…

高能物理 - 唯象学 · 物理学 2020-12-02 Ara Ioannisian , Stefan Pokorski , Janusz Rosiek , Michal Ryczkowski

A possible experimental setup for measuring the effect of parity violation in the interaction of the polarized proton or deuteron beams with an unpolarized target is discussed. One possibility is investigation of scattering of the proton or…

高能物理 - 实验 · 物理学 2020-08-07 I. A. Koop , A. I. Milstein , N. N. Nikolaev , A. S. Popov , S. G. Salnikov , P. Yu. Shatunov , Yu. M. Shatunov

Assuming a minimal seesaw model with two heavy neutrinos (N), we examine effects of leptonic CP violation induced by approximate mu-tau symmetric interactions. As long as N is subject to the mu-tau symmetry, we can choose CP phases of Dirac…

高能物理 - 唯象学 · 物理学 2008-11-26 Teppei Baba , Masaki Yasue

It is shown that the vector current contribution of neutrino interaction with electrons in ion gives rise to oscillating component, which is absent for the axial-vector contribution, when a single neutrino is detected in the recently…

高能物理 - 唯象学 · 物理学 2016-08-03 T. Asaka , M. Tanaka , M. Yoshimura

If the massive neutrinos are the Majorana particles, how to pin down the Majorana CP-violating phases will eventually become an unavoidable question relevant to the future neutrino experiments. We argue that a study of neutrino-antineutrino…

高能物理 - 唯象学 · 物理学 2013-04-03 Zhi-zhong Xing

We constructed rephasing invariant measures of CP violation with elements of the neutrino mass matrix, in the basis in which the charged lepton mass matrix is diagonal. We discuss some examples of neutrino mass matrices with texture zeroes,…

高能物理 - 唯象学 · 物理学 2008-11-26 Utpal Sarkar , Santosh K. Singh

We present a new method to analyze upcoming results in the search for CP violating neutrino oscillations. The CP violating amplitudes $\mathcal{A}_{\alpha\beta}^{kj}$ provide parametrization independent observables, which will be accessible…

高能物理 - 唯象学 · 物理学 2017-04-12 Heinrich Päs , Philipp Sicking

The detection of CP violation in neutrino oscillations is one of the most important goals of the next generation of neutrino experiments. Here we study the detectability of the CP-violating phase in the oscillation of atmospheric neutrinos.…

高能物理 - 实验 · 物理学 2026-04-16 Thilo Birkenfeld , Achim Stahl

We revisit the effect of the (Dirac) CP-violating phase on neutrino lepton number asymmetries in both mass- and flavor-basis. We found that, even if there are sizable effects on muon- and tau-neutrino asymmetries, the effect on the…

宇宙学与河外天体物理 · 物理学 2016-12-28 Gabriela Barenboim , Wan-Il Park

If neutrinos get mass via the seesaw mechanism the mixing matrix describing neutrino oscillations can be effectively non-unitary. We show that in this case the neutrino appearance probabilities involve a new CP phase, phi, associated to…

高能物理 - 唯象学 · 物理学 2016-08-12 O. G. Miranda , M. Tortola , J. W. F. Valle

Discovery of the CP-violation in the lepton sector is one of the challenges of the particle physics. We search for possible principles, symmetries and phenomenological relations that can lead to particular values of the CP-violating Dirac…

高能物理 - 唯象学 · 物理学 2010-10-27 Y. Farzan , A. Yu. Smirnov

We present a necessary condition on the solar oscillation amplitude for CP violation to be detectable through neutrinoless double beta (0\nu\beta\beta) decay. It depends only on the fractional uncertainty in the \nu_e-\nu_e element of the…

高能物理 - 唯象学 · 物理学 2009-09-15 V. Barger , S. L. Glashow , P. Langacker , D. Marfatia

The CP violation effects in long baseline neutrino oscillations are studied in the framework of a four-neutrino model (three active neutrinos and one sterile neutrino). It is assumed that neutrino masses are devided into two nearly…

高能物理 - 唯象学 · 物理学 2008-11-26 Anna Kalliomäki , Jukka Maalampi , Morimitsu Tanimoto

We propose a new approach to explore CPT violation of neutrino oscillation through a fluctuating matter based on time-dependent geometric quantities. By mapping the neutrino oscillation onto a Poincare sphere structure, we obtain an…

量子物理 · 物理学 2016-06-14 Zisheng Wang , Hui Pan

It is shown that effects of CP violation arise in neutrino-photon scattering. Several CP-violating $\nu\gamma$ reactions are considered within the Standard Model and predictions for some observables are made. It is emphasized that…

高能物理 - 唯象学 · 物理学 2014-01-21 I. Alikhanov

We consider the transformation properties of fermions under the discrete symmetries CPT, CP, and C in the presence of B-L violation. We thus generalize the analysis of the known properties of Majorana neutrinos, probed via neutrinoless…

高能物理 - 唯象学 · 物理学 2016-06-01 Susan Gardner , Xinshuai Yan

Considering the $\mu$-$\tau$ symmetry, we discuss a direct linkage between phases of flavor neutrino masses and leptonic CP violation by determining three eigenvectors associated with ${\rm\bf M}=M^\dagger_\nu M_\nu$ for a complex flavor…

高能物理 - 唯象学 · 物理学 2008-11-26 Teppei Baba , Masaki Yasue

Taking into account the recent progress in the understanding of the lepton flavour effects in leptogenesis, we investigate in detail the possibility that the CP-violation necessary for the generation of the baryon asymmetry of the Universe…

高能物理 - 唯象学 · 物理学 2008-11-26 S. Pascoli , S. T. Petcov , Antonio Riotto

Nonzero and relatively large of $\theta_{13}$ mixing angle has some phenomenological consequences on neutrino physics beyond the standard model. One of the consequences if the mixing angle $\theta_{13}\neq 0$ is the possibility of the CP…

高能物理 - 唯象学 · 物理学 2014-10-16 Asan Damanik