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Neutrino-neutrino interactions inside core-collapse supernovae may give rise to collective flavor oscillations resulting in swap between flavors. These oscillations depend on the initial energy spectra, and relative fluxes or relative…

High Energy Physics - Phenomenology · Physics 2014-11-20 Sovan Chakraborty , Sandhya Choubey , Srubabati Goswami , Kamales Kar

Collective oscillations of supernova neutrinos swap the electron neutrino and antineutrino spectra with those of another flavor in certain energy intervals bounded by sharp spectral splits. This phenomenon is far more general than…

High Energy Physics - Phenomenology · Physics 2009-09-02 Basudeb Dasgupta , Amol Dighe , Georg G. Raffelt , Alexei Yu. Smirnov

In core-collapse supernovae, neutrinos and antineutrinos are initially subject to significant self-interactions induced by weak neutral currents, which may induce strong-coupling effects on the flavor evolution (collective transitions). The…

High Energy Physics - Phenomenology · Physics 2008-09-19 G. L. Fogli , E. Lisi , A. Marrone , A. Mirizzi

In the dense supernova core, self-interactions may align the flavor polarization vectors of neutrinos and antineutrinos, and induce collective flavor transformations. Different alignment ansatzes are known to describe approximately the…

High Energy Physics - Phenomenology · Physics 2008-11-26 G. L. Fogli , E. Lisi , A. Marrone , A. Mirizzi , I. Tamborra

Neutrinos in a core-collapse supernova undergo coherent flavor transformations in their own background. We explore this phenomenon during the cooling stage of the explosion. Our three-flavor calculations reveal qualitatively new effects…

High Energy Physics - Phenomenology · Physics 2010-05-25 Alexander Friedland

Neutrino and antineutrino fluxes from a core-collapse galactic supernova are studied, within a representative three-flavor scenario with inverted mass hierarchy and tiny 1-3 mixing. The initial flavor evolution is dominated by collective…

High Energy Physics - Phenomenology · Physics 2010-04-23 Gianluigi Fogli , Eligio Lisi , Antonio Marrone , Irene Tamborra

The formalism of flavor conversion of supernova neutrinos is generalized to include possible differences in the fluxes of the muon and tau neutrinos produced in the star. In this case the radiatively induced difference of the nu_mu and…

High Energy Physics - Phenomenology · Physics 2008-11-26 E. Kh. Akhmedov , C. Lunardini , A. Yu. Smirnov

I review the effects of flavor conversion of neutrinos from stellar collapse due to masses and mixing, and discuss the motivations for their study. I consider in detail the sensitivity of certain observables (characteristics of the energy…

High Energy Physics - Phenomenology · Physics 2007-05-23 Cecilia Lunardini

Neutrinos emitted from a core-collapse supernova can experience collective flavor transformation because of high neutrino fluxes. As a result, neutrinos of different flavors can have their energy spectra (partially) swapped, a phenomenon…

High Energy Astrophysical Phenomena · Physics 2010-04-21 Huaiyu Duan

We show that the bump in the electron number density profile at the base of the hydrogen envelope in O-Ne-Mg core-collapse supernovae causes an interesting interplay between neutrino-electron and neutrino-neutrino forward scattering effects…

High Energy Astrophysical Phenomena · Physics 2013-05-30 John F. Cherry , Meng-Ru Wu , Joe Carlson , Huaiyu Duan , George M. Fuller , Yong-Zhong Qian

Neutrinos emitted deep within a supernova explosion experience a self-induced index of refraction. In the stationary, one-dimensional (1D) supernova "bulb model", this self-induced refraction can lead to a collective flavor transformation…

High Energy Physics - Phenomenology · Physics 2020-01-17 Joshua D. Martin , J. Carlson , Huaiyu Duan

When the neutrino density is very high, as in core-collapse supernovae, neutrino-neutrino interactions are not negligible and can appreciably affect the evolution of flavour. The physics of these phenomena is briefly highlighted, and their…

High Energy Physics - Phenomenology · Physics 2009-05-18 Irene Tamborra

We consider for the first time R-parity violating interactions of the Minimal Standard Supersymmetric Model involving neutrinos and quarks (``flavor changing neutral currents'', FCNC's) in the infall stage of stellar collapse. Our…

High Energy Physics - Phenomenology · Physics 2011-05-23 Philip S. Amanik , George M. Fuller , Benjamin Grinstein

It was recently realized that three-flavor effects could peculiarly modify the development of spectral splits induced by collective oscillations, for supernova neutrinos emitted during the cooling phase of a protoneutron star. We…

High Energy Physics - Phenomenology · Physics 2014-11-20 Basudeb Dasgupta , Alessandro Mirizzi , Irene Tamborra , Ricard Tomas

Collective neutrino flavor conversions in core-collapse supernovae (SNe) begin with instabilities, initially triggered when the dominant $\nu_e$ outflow concurs with a small antineutrino flux of opposite lepton number, with…

High Energy Physics - Phenomenology · Physics 2025-11-21 Damiano F. G. Fiorillo , Hans-Thomas Janka , Georg G. Raffelt

We summarize our current understanding of the neutrino flavor conversions inside a core collapse supernova, clarifying the important role played by the "collective effects" in determining flavor conversion probabilities. The potentially…

High Energy Physics - Phenomenology · Physics 2010-04-22 Amol Dighe

In a core collapse supernova, collective oscillations of neutrinos emitted by the proto-neutron star significantly modifies the partition of energy between different flavors in a way which is potentially important for the nucleosynthesis of…

High Energy Astrophysical Phenomena · Physics 2017-03-29 T. Bulmus , Y. Pehlivan

We calculate coherent neutrino and antineutrino flavor transformation in the supernova environment, for the first time including a self-consistent treatment of forward scattering-induced coupling and entanglement of intersecting…

Astrophysics · Physics 2008-11-26 Huaiyu Duan , George M. Fuller , J. Carlson , Yong-Zhong Qian

Oscillations of neutrino emerging from a supernova core are studied. In this extremely high density region neutrino self interactions induce collective flavor transitions. When collective transitions are decoupled from matter oscillations,…

High Energy Physics - Phenomenology · Physics 2008-05-19 Gianluigi Fogli , Eligio Lisi , Antonio Marrone , Alessandro Mirizzi

We revisit the flavor composition of neutrinos from core-collapse supernovae (SN), focusing on robust predictions that are insensitive to the poorly known dynamics of collective flavor conversion in the inner core. Assuming that the many…

High Energy Physics - Phenomenology · Physics 2025-12-22 Antonio Capanema , Yago Porto , Maria Manuela Saez
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