Article
Astronomy & Astrophysics
Nicole F. Bell, Matthew J. Dolan, Sandra Robles
Summary: The Hyper-Kamiokande experiment can precisely measure the Diffuse Supernova Neutrino Background (DSNB) and has found that low-mass dark matter may pollute the DSNB signal, affecting the determination of parameters. However, due to the lack of angular information, it is difficult to distinguish the contributions of the DSNB and dark matter.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Daniel E. Lopez-Fogliani, Andres D. Perez, Roberto Ruiz de Austri
Summary: The study explored R-parity conserving supersymmetric models with right-handed neutrinos in order to investigate possible dark matter candidates and their relation to neutrino physics. Analysis showed the importance of annihilations through scalar quartic couplings and coannihilation mechanisms in addition to resonances for the correct amount of relic density. The impact of current and future direct and indirect detection experiments on both dark matter candidates was also presented.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Katherine Freese, Irina Galstyan, Pearl Sandick, Patrick Stengel
Summary: Dark matter spikes surrounding black holes in our Galaxy are significant sites of dark matter annihilation that may produce detectable neutrino signals. This paper examines the association of 10 - 105M (R) black holes with dark matter spikes that formed in early minihalos and still exist in the Milky Way today, using neutrino data from the ANTARES and IceCube detectors. The study places constraints on the distribution of dark matter spikes and provides significant limits on the formation of the first generation of stars in early minihalos, stronger than previous limits from gamma-ray searches. The research also suggests that larger black holes could be remnants of Dark Stars and neutrino observations can constrain their properties.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Jong Soo Kim, Daniel E. Lopez-Fogliani, Andres D. Perez, Roberto Ruiz de Austri
Summary: We investigate the coexistence of right-handed sneutrinos and gravitinos as potential explanations for dark matter. Comparing extensions of the MSSM and NMSSM models, we focus on the latter. We find that if the LH-RH sneutrino mixing parameter is small, a long-lived RH sneutrino NLSP is possible, and its decay to LSP produces monochromatic neutrinos detectable by current and planned neutrino telescopes.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2023)
Article
Astronomy & Astrophysics
Kensuke Akita, Gaetano Lambiase, Michiru Niibo, Masahide Yamaguchi
Summary: In this study, we discuss the potential discovery of neutrino lines from MeV dark matter annihilation and decay using the JUNO experiment in a model-independent manner. Our findings show that JUNO will provide strong constraints on the cross section of dark matter annihilating into neutrinos and on the lifetime of dark matter decaying into neutrinos. Specifically, with 20 years of data-taking in a fiducial volume of 17 kton, JUNO can constrain the cross section to be smaller than 4 x 10-26 cm3 sec-1 for dark matter particles with a mass between 15 MeV and 50 MeV at a 90% confidence level, which has implications for testing the thermal production mechanism of dark matter particles in this mass range. The lifetime of dark matter particles with a mass around 100 MeV can be constrained to be as short as 1 x 1024 sec at a 90% confidence level.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Carlos Jaramillo, Manfred Lindner, Werner Rodejohann
Summary: This study investigates the potential role of right-handed neutrinos as dark matter in the Universe and explores the possibility of their generation through the freeze-out production mechanism. It is found that if the neutrino Yukawa coupling is large in the early Universe to thermalize the sterile neutrinos, and then becomes tiny at a certain moment, they can drop out of equilibrium and potentially become stable on cosmological time scales. The proposed mechanism is shown to work for a wide range of sterile neutrino masses.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Carlos Jaramillo
Summary: This paper proposes a new production mechanism for keV sterile neutrino dark matter, which relies on thermal freeze-out to produce dark matter neutrinos. The challenge lies in balancing large and small Yukawa couplings to ensure the thermalization and stability of sterile neutrinos. This problem is solved by implementing varying Yukawa couplings. The interplay of seesaw and Froggatt-Nielsen mechanisms explains the hierarchy in the flavour structure and the origin of light neutrino masses.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Ren-Peng Zhou, Da Huang, Chao-Qiang Geng
Summary: In this study, we explore the possibility of cosmic birefringence effect induced by coupling a fermionic current with photons via a Chern-Simons-like term. By correcting a mistake in previous research, we derive the general formula of the cosmic birefringence angle. We find that left-handed electron neutrinos and asymmetric dark matter (ADM) particles can explain CMB photon polarization rotations, and we discuss specific cases with different parameter values.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2023)
Article
Astronomy & Astrophysics
Gonzalo Alonso-Alvarez, James M. Cline
Summary: Sterile neutrinos that mix with active neutrinos are considered as interesting dark matter candidates, with their production being constrained by structure formation observations and X-ray searches. Resonant oscillations between active and sterile neutrinos can occur in the early universe if active neutrinos couple to an oscillating condensate of a very light gauge field, allowing sterile neutrinos to potentially make up all of the dark matter while respecting X-ray constraints. These deviations from standard neutrino oscillations could still be present today.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Marco Chianese, Bowen Fu, Stephen F. King
Summary: The study focuses on the interplay between the neutrino portal through the right-handed neutrinos and the gravity portal through the massless spin-2 graviton in producing dark matter particles in the early universe. By exploring the parameter space and conducting analysis on the Littlest Seesaw model, it reveals the key elements involved in the production of dark matter particles.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Jose Alonso Carpio, Ali Kheirandish, Kohta Murase
Summary: Thermal MeV neutrino emissions from core-collapse supernovae provide a unique opportunity to explore physics beyond the Standard Model in the neutrino sector. The next generation of neutrino experiments, such as DUNE and Hyper-Kamiokande, can detect a large number of neutrinos in the event of a Galactic supernova. Interaction between supernova neutrinos and local dark matter may result in neutrino echoes with significant time delays, allowing us to probe parameter space not explored by dark matter direct detection experiments.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2023)
Article
Physics, Multidisciplinary
Ingolf Bischer, Tilman Plehn, Werner Rodejohann
Summary: Sterile neutrinos that couple only to third-generation fermions are appealing candidates for dark matter, capable of generating the observed relic density without violating constraints from direct and indirect detection. An Effective Field Theory approach reveals that these neutrinos represent a gauged third-generation B?L model, as well as third-generation scalar or vector leptoquarks, with LHC measurements able to distinguish between the underlying models.
Article
Astronomy & Astrophysics
Torsten Bringmann, Paul Frederik Depta, Marco Hufnagel, Joern Kersten, Joshua T. Ruderman, Kai Schmidt-Hoberg
Summary: We propose a new mechanism for generating undetectable sterile neutrinos vs in the early Universe, through the conversion of ordinary neutrinos va in scattering processes vsva -> vsvs. This leads to an exponential growth in the abundance of vs after initial production by oscillations. We demonstrate that this production regime occurs naturally for self-interacting vs, offering significant opportunities for vs to account for all observed dark matter. Our findings provide strong motivation to enhance the sensitivity of X-ray line searches and improve constraints from structure formation.
Article
Astronomy & Astrophysics
Arnab Paul, Arindam Chatterjee, Anish Ghoshal, Supratik Pal
Summary: The study explores the interaction between dark matter and neutrinos in Lambda CDM cosmology, using the Planck 2018 dataset to constrain these processes. A viable particle dark matter model with dark matter-neutrino interaction is discussed, and the constraints obtained are mapped to the parameter space of the model.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Andrea Gaspert, Pietro Giampa, David E. Morrissey
Summary: Experiments using liquid noble gases like argon and xenon are crucial for detecting weakly interacting massive particles as dark matter. However, as these experiments scale up, they will face new backgrounds from neutrino scattering. By combining data from independent argon and xenon experiments, significant improvements in sensitivity can potentially be achieved in large-scale experiments.
Article
Astronomy & Astrophysics
Arman Esmaili, Pasquale Dario Serpico
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2015)
Article
Astronomy & Astrophysics
Arman Esmaili, Alexei Yu. Smirnov
Article
Astronomy & Astrophysics
Atri Bhattacharya, Arman Esmaili, Sergio Palomares-Ruiz, Ina Sarcevic
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2017)
Article
Astronomy & Astrophysics
Arman Esmaili, Francis Halzen, O. L. G. Peres
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2013)
Article
Astronomy & Astrophysics
Arman Esmaili, Pasquale Dario Serpico
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2013)
Article
Astronomy & Astrophysics
Arman Esmaili, O. L. G. Peres, Zahra Tabrizi
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2014)
Article
Astronomy & Astrophysics
Arman Esmaili, Sin Kyu Kang, Pasquale Dario Serpico
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2014)
Article
Astronomy & Astrophysics
Arman Esmaili, Ernesto Kemp, O. L. G. Peres, Zahra Tabrizi
Article
Astronomy & Astrophysics
A. Esmaili, D. R. Gratieri, M. M. Guzzo, P. C. de Holanda, O. L. G. Peres, G. A. Valdiviesso
Article
Astronomy & Astrophysics
Arman Esmaili, O. L. G. Peres, Pasquale Dario Serpico
Article
Astronomy & Astrophysics
Victor S. Basto-Gonzalez, Arman Esmaili, Orlando L. G. Peres
Article
Astronomy & Astrophysics
Arman Esmaili, Sara Khatibi, Mojtaba Mohammadi Najafabadi
Proceedings Paper
Astronomy & Astrophysics
Arman Esmaili, Andrea Palladino, Francesco Vissani
VERY LARGE VOLUME NEUTRINO TELESCOPE (VLVNT-2015)
(2016)
Article
Physics, Particles & Fields
Arman Esmaili, Alexei Yu. Smirnov
JOURNAL OF HIGH ENERGY PHYSICS
(2013)
Article
Physics, Particles & Fields
Arman Esmaili, Alexei Yu. Smirnov
JOURNAL OF HIGH ENERGY PHYSICS
(2013)