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After discovery of the Higgs boson at CERN the Standard Model acquired a status of the theory of the elementary particles in the electroweak range (up to about 300 GeV). What general conclusions can be inferred from the Standard Model? It…

高能物理 - 唯象学 · 物理学 2015-01-05 S. M. Bilenky

We study the interplay between flavor symmetries and leptogenesis in the case when the scale of flavor symmetry breaking is higher than the scale at which lepton number is violated. We show that when the heavy Majorana neutrinos belong to…

高能物理 - 唯象学 · 物理学 2009-11-13 E. Bertuzzo , P. Di Bari , F. Feruglio , E. Nardi

Motivated by the scenario of resonant leptogenesis in which lepton number creation in the electroweak-scale is relevant, we investigate the spectral properties and possible collective nature of the standard model neutrinos at electroweak…

高能物理 - 唯象学 · 物理学 2013-10-08 Kohtaroh Miura , Yoshimasa Hidaka , Daisuke Satow , Teiji Kunihiro

We analyze the structure of quark and lepton mass matrices under the hypothesis that they are determined from a minimum principle applied to a generic potential invariant under the $\left[SU(3)\right]^5\otimes \mathcal O(3)$ flavor…

高能物理 - 唯象学 · 物理学 2015-06-16 R. Alonso , M. B. Gavela , G. Isidori , L. Maiani

The discovery of the Planck's relation is generally regarded as the starting point of quantum physics. The Planck's constant h is now regarded as one of the most important universal constants. The physical nature of h, however, has not been…

综合物理 · 物理学 2017-06-15 Donald C. Chang

The present paper is based upon ideas and results obtained in an earlier paper by the author devoted to a new formulation of quantum electrodynamics. The equations derived in that paper depict the structure and properties of the electron as…

综合物理 · 物理学 2017-05-08 V. A. Golovko

A discovery of neutrinoless double-$\beta$ decay would be profound, providing the first direct experimental evidence of $\Delta L=2$ lepton number violating processes. While a natural explanation is provided by an effective Majorana…

高能物理 - 唯象学 · 物理学 2017-09-13 Michael L. Graesser

In the case of two generation neutrinos, the energy-scale dependence of the lepton-flavor mixing matrix with Majorana phase can be governed by only one parameter r, which is the ratio between the diagonal elements of neutrino mass matrix.…

高能物理 - 唯象学 · 物理学 2009-10-31 N. Haba , Y. Matsui , N. Okamura

We present and explore the Higgs physics of a model that in addition to the Standard Model fields includes a lepton number violating singlet scalar field. Based on the fact that the only experimental data we have so far for physics beyond…

高能物理 - 唯象学 · 物理学 2008-11-26 Alfredo Aranda , Omar Blanno , J. Lorenzo Diaz-Cruz

The Planck constant ($\hbar$) plays a pivotal role in quantum physics. Historically, it has been proposed as postulate, part of a genius empirical relationship $E=\hbar \omega$ in order to explain the intensity spectrum of the blackbody…

光学 · 物理学 2015-05-04 Real Tremblay , Nicolas Doyon , Claudine Ni Allen

We present an updated analysis of the coherent neutrino-nucleus elastic scattering data of the COHERENT experiment taking into account the new quenching factor published recently in Phys. Rev. D100, 033003 (2019). Through a fit of the…

高能物理 - 唯象学 · 物理学 2020-02-26 M. Cadeddu , F. Dordei , C. Giunti , Y. F. Li , Y. Y. Zhang

Heavy neutral leptons (HNLs) are hypothetical particles proposed as a potential explanation for neutrino oscillations and the generation of the baryon asymmetry in the Universe. This paper focuses on HNLs with masses significantly above the…

高能物理 - 唯象学 · 物理学 2025-02-11 Volodymyr Gorkavenko , Oleksandr Khasai , Oleg Ruchayskiy , Mariia Tsarenkova

The seeming violation of universality in the tau lepton coupling to the W boson suggested by LEP II data is studied using an Effective Field Theory (EFT) approach. Within this framework we explore how this feature fits into the current…

高能物理 - 唯象学 · 物理学 2015-06-04 Alberto Filipuzzi , Martin Gonzalez-Alonso , Jorge Portoles

Exponential lepton mass ratios are studied in a low energy phenomenology. In view of the known data, the mass patterns of the charged leptons and widely discussed quasi-degenerate neutrinos are related to one another by two different traits…

高能物理 - 唯象学 · 物理学 2007-05-23 E. M. Lipmanov

Flavour physics represents one of the most interesting and, at the same time, less understood sector of the Standard Theory. On the one hand, the peculiar pattern of quark and lepton masses, and their mixing angles, may be the clue to some…

高能物理 - 唯象学 · 物理学 2016-10-12 Gino Isidori

We present a relationship, E_\nu^{max} = m_{\nu} M_{Planck}/M_{weak}, among the highest observed neutrino energy (~PeV) and the neutrino mass, the weak scale, and the Planck energy. We then discuss some tests of this relationship, and…

高能天体物理现象 · 物理学 2014-07-04 John G. Learned , Thomas J. Weiler

The three Standard Model neutrinos can have Majorana mass or strictly Dirac mass, but both scenarios are practically indistinguishable in neutrino oscillation experiments. If they are pseudo-Dirac, however, there will be new mass splittings…

高能物理 - 唯象学 · 物理学 2025-09-29 Chee Sheng Fong , Yago Porto

We discuss the possibility of using the observables deduced from the angular distribution of the $B\to D^{(\ast)} \ell\bar{\nu}$ decays to test the effects of lepton flavor universality violation (LFUV). We show that the measurement of even…

高能物理 - 唯象学 · 物理学 2019-07-16 Damir Becirevic , Marco Fedele , Ivan Nisandzic , Andrey Tayduganov

The main goal of the paper is to give a short review on neutrino electromagnetic properties. In the introductory part of the paper a summary on what we really know about neutrinos is given: we discuss the basics of neutrino mass and mixing…

高能物理 - 唯象学 · 物理学 2015-03-13 Carlo Giunti , Alexander Studenikin

The neutrino asymmetry in the early universe plasma, $n_\nu - n_{\bar \nu}$, is calculated both before and after the electroweak phase transition (EWPT). The leptogenesis before EWPT within the standard model is well known to be driven by…

宇宙学与河外天体物理 · 物理学 2017-05-05 Maxim Dvornikov , Victor B. Semikoz