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Inside dense neutrino gases, such as neutron star mergers or core-collapse supernovae, collective neutrino effects cause the transformation of one neutrino flavour into another. Due to strong neutrino self-interactions in these…

量子物理 · 物理学 2025-08-18 Shvetaank Tripathi , Sandeep Joshi , Garima Rajpoot , Prashant Shukla

We examine how a parametrization of neutrino mixing matrix reflecting quark-lepton complementarity can be probed by considering phase-averaged oscillation probabilities, flavor composition of neutrino fluxes coming from atmospheric and…

高能物理 - 唯象学 · 物理学 2011-05-12 Sin Kyu Kang

The largest tau neutrino dataset to date is IceCube's atmospheric tau neutrino appearance dataset containing $>1,000$ tau neutrino and antineutrino events as determined by a fit to a standard three-flavor oscillation framework. On an…

高能物理 - 唯象学 · 物理学 2021-12-17 Peter B. Denton

We study the predictions for BR(mu-> e+gamma) and BR(tau-> e,mu+gamma) in a class of recently proposed horizontal SU(2) model that leads to a 3 X 2 seesaw model for neutrino masses. We consider two such models and obtain the correct…

高能物理 - 唯象学 · 物理学 2009-11-10 B. Dutta , R. N. Mohapatra

We investigate the flavor-specific properties of leptophilic dark matter in neutrino mass models, where dark matter signals are directly correlated with the neutrino oscillation data, providing complementary insights into the neutrino mass…

高能物理 - 唯象学 · 物理学 2025-02-21 Subhaditya Bhattacharya , Sven Fabian , Johannes Herms , Sudip Jana

We consider the flavor symmetry L_mu - L_tau for the neutrino mass matrix. The most general neutrino mass matrix conserving L_mu - L_tau predicts quasi-degenerate neutrino masses with one maximal and two zero mixing angles. The presence of…

高能物理 - 唯象学 · 物理学 2009-11-10 Sandhya Choubey , Werner Rodejohann

Current data implies three simple forms of the neutrino mass matrix, each corresponding to the conservation of a non-standard lepton charge. While models based on L_e and L_e - L_mu - L_tau are well-known, little attention has been paid to…

高能物理 - 唯象学 · 物理学 2007-05-23 W. Rodejohann , M. A. Schmidt

Neutrinos experience collective flavor conversion in extreme astrophysical environments such as core-collapse supernovae (CCSNe). One manifestation of collective conversion is slow flavor conversion (SFC), which has recently attracted…

高能天体物理现象 · 物理学 2025-09-03 Ian Padilla-Gay , Heng-Hao Chen , Sajad Abbar , Meng-Ru Wu , Zewei Xiong

The Standard Model lacks an organizing principle to describe quark and lepton ``flavours''. Neutrino oscillation experiments show that leptons mix very differently from quarks, adding a major challenge to the flavour puzzle. We briefly…

高能物理 - 唯象学 · 物理学 2025-02-04 Gui-Jun Ding , Jose W. F. Valle

We consider a class of models predicting new heavy neutral fermionic states, whose mixing with the light neutrinos can be naturally significant and produce observable effects below the threshold for their production. We update the indirect…

高能物理 - 唯象学 · 物理学 2016-09-01 D. Tommasini , G. Barenboim , G. Bernabeu , C. Jarlskog

The flavor composition of astrophysical neutrinos observed in neutrino telescopes is a powerful discriminator between different astrophysical neutrino production mechanisms and can also teach us about the particle physics properties of…

高能物理 - 唯象学 · 物理学 2017-01-18 Vedran Brdar , Joachim Kopp , Xiao-Ping Wang

We study a neutrino mass model with $A_4$ discrete flavor symmetry using a type-I seesaw mechanism. The inclusion of extra flavons in our model leads to the deviations from exact tribimaximal mixing pattern resulting in a nonzero…

高能物理 - 唯象学 · 物理学 2023-07-10 Animesh Barman , Ng. K. Francis , Hrishi Bora

Neutrino masses and mixings have important implications for models of fermion masses, and, most directly, for the charged lepton sector. We consider supersymmetric Abelian flavor models, where neutrino mass parameters are related to those…

高能物理 - 唯象学 · 物理学 2009-10-31 Jonathan L. Feng , Yosef Nir , Yael Shadmi

We consider the ``standard'' spectrum of the active neutrinos (characterized by strong mass hierarchy and small mixing) with additional sterile neutrino, $\nu_s$. The sterile neutrino mixes strongly with the muon neutrino, so that…

高能物理 - 唯象学 · 物理学 2011-07-19 Q. Y. Liu , A. Yu. Smirnov

The supernova neutrino flavor evolution in the presence of the non-trivial neutrino magnetic moment and strong magnetic field is numerically derived using the two-flavor and single-angle approximation. The novel properties of collective…

高能物理 - 唯象学 · 物理学 2021-05-18 Ziyi Yuan , Yu-Feng Li , Xiang Zhou

We study the renormalization group running of the tri-bimaximal mixing predicted by the two typical $S_4$ flavor models at leading order. Although the textures of the mass matrices are completely different, the evolution of neutrino mass…

高能物理 - 唯象学 · 物理学 2011-08-05 Gui-Jun Ding , Dong-Mei Pan

In the early Universe, or near a supernova core, neutrino flavor evolution may be affected by coherent neutrino-neutrino scattering. We develop a microscopic picture of this phenomenon. We show that coherent scattering does not lead to the…

高能物理 - 唯象学 · 物理学 2009-11-10 Alexander Friedland , Cecilia Lunardini

Neutrino evolution, of great importance in environments such as neutron star mergers (NSMs) because of their impact on explosive nucleosynthesis, is still poorly understood due to the high complexity and variety of possible flavor…

In this paper, we make an attempt to combine the neutrino trimaximal (TM1 and TM2) mixings and $\mu$-$\tau$ reflection symmetry in the type-I seesaw model. Such a scenario is highly restrictive and predictive: in addition to three…

高能物理 - 唯象学 · 物理学 2022-05-16 Zhen-hua Zhao

We examine a phenomenon recently predicted by numerical simulations of supernova neutrino flavor evolution: the swapping of supernova $\nu_e$ and $\nu_{\mu,\tau}$ energy spectra below (above) energy $\EC$ for the normal (inverted) neutrino…

天体物理学 · 物理学 2008-11-26 Huaiyu Duan , George M. Fuller , J. Carlson , Yong-Zhong Qian