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Title: Cosmic microwave background constraints on secret interactions among sterile neutrinos

Abstract

Secret contact interactions among eV sterile neutrinos, mediated by a massive gauge boson X (with M {sub X} || M {sub W} ), and characterized by a gauge coupling g {sub X} , have been proposed as a mean to reconcile cosmological observations and short-baseline laboratory anomalies. We constrain this scenario using the latest Planck data on Cosmic Microwave Background anisotropies, and measurements of baryon acoustic oscillations (BAO). We consistently include the effect of secret interactions on cosmological perturbations, namely the increased density and pressure fluctuations in the neutrino fluid, and still find a severe tension between the secret interaction framework and cosmology. In fact, taking into account neutrino scattering via secret interactions, we derive our own mass bound on sterile neutrinos and find (at 95 % CL) m {sub s} < 0.82 eV or m {sub s} < 0.29 eV from Planck alone or in combination with BAO, respectively. These limits confirm the discrepancy with the laboratory anomalies. Moreover, we constrain, in the limit of contact interaction, the effective strength G {sub X} to be < 2.8 (2.0) × 10{sup 10} G {sub F} from Planck (Planck+BAO). This result, together with the mass bound, strongly disfavours the region withmore » M {sub X} ∼ 0.1 MeV and relatively large coupling g {sub X} {sub ∼} 10{sup −1}, previously indicated as a possible solution to the small scale dark matter problem.« less

Authors:
;  [1];  [2];  [3];  [4];  [5]
  1. Dipartimento di Fisica e Scienze della Terra, Università di Ferrara, Via Giuseppe Saragat 1, I-44122 Ferrara (Italy)
  2. Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara, Via Giuseppe Saragat 1, I-44122 Ferrara (Italy)
  3. Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Complesso Univ. Monte S.Angelo, I-80126 Napoli (Italy)
  4. Dipartimento Interateneo di Fisica 'Michelangelo Merlin,' Via Amendola 173, 70126 Bari (Italy)
  5. PRISMA Cluster of Excellence and Mainz Institute for Theoretical Physics, JohannesGutenberg-Universität Mainz, 55099 Mainz (Germany)
Publication Date:
OSTI Identifier:
22676089
Resource Type:
Journal Article
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2017; Journal Issue: 07; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANISOTROPY; BARYONS; BOSONS; COSMOLOGY; COUPLING; DENSITY; DISTURBANCES; FLUCTUATIONS; FLUIDS; INTERACTIONS; MASS; MATHEMATICAL SOLUTIONS; MEV RANGE; NONLUMINOUS MATTER; OSCILLATIONS; PERTURBATION THEORY; RELICT RADIATION; SCATTERING; STERILE NEUTRINOS

Citation Formats

Forastieri, Francesco, Natoli, Paolo, Lattanzi, Massimiliano, Mangano, Gianpiero, Mirizzi, Alessandro, and Saviano, Ninetta. Cosmic microwave background constraints on secret interactions among sterile neutrinos. United States: N. p., 2017. Web. doi:10.1088/1475-7516/2017/07/038.
Forastieri, Francesco, Natoli, Paolo, Lattanzi, Massimiliano, Mangano, Gianpiero, Mirizzi, Alessandro, & Saviano, Ninetta. Cosmic microwave background constraints on secret interactions among sterile neutrinos. United States. https://doi.org/10.1088/1475-7516/2017/07/038
Forastieri, Francesco, Natoli, Paolo, Lattanzi, Massimiliano, Mangano, Gianpiero, Mirizzi, Alessandro, and Saviano, Ninetta. 2017. "Cosmic microwave background constraints on secret interactions among sterile neutrinos". United States. https://doi.org/10.1088/1475-7516/2017/07/038.
@article{osti_22676089,
title = {Cosmic microwave background constraints on secret interactions among sterile neutrinos},
author = {Forastieri, Francesco and Natoli, Paolo and Lattanzi, Massimiliano and Mangano, Gianpiero and Mirizzi, Alessandro and Saviano, Ninetta},
abstractNote = {Secret contact interactions among eV sterile neutrinos, mediated by a massive gauge boson X (with M {sub X} || M {sub W} ), and characterized by a gauge coupling g {sub X} , have been proposed as a mean to reconcile cosmological observations and short-baseline laboratory anomalies. We constrain this scenario using the latest Planck data on Cosmic Microwave Background anisotropies, and measurements of baryon acoustic oscillations (BAO). We consistently include the effect of secret interactions on cosmological perturbations, namely the increased density and pressure fluctuations in the neutrino fluid, and still find a severe tension between the secret interaction framework and cosmology. In fact, taking into account neutrino scattering via secret interactions, we derive our own mass bound on sterile neutrinos and find (at 95 % CL) m {sub s} < 0.82 eV or m {sub s} < 0.29 eV from Planck alone or in combination with BAO, respectively. These limits confirm the discrepancy with the laboratory anomalies. Moreover, we constrain, in the limit of contact interaction, the effective strength G {sub X} to be < 2.8 (2.0) × 10{sup 10} G {sub F} from Planck (Planck+BAO). This result, together with the mass bound, strongly disfavours the region with M {sub X} ∼ 0.1 MeV and relatively large coupling g {sub X} {sub ∼} 10{sup −1}, previously indicated as a possible solution to the small scale dark matter problem.},
doi = {10.1088/1475-7516/2017/07/038},
url = {https://www.osti.gov/biblio/22676089}, journal = {Journal of Cosmology and Astroparticle Physics},
issn = {1475-7516},
number = 07,
volume = 2017,
place = {United States},
year = {Sat Jul 01 00:00:00 EDT 2017},
month = {Sat Jul 01 00:00:00 EDT 2017}
}

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Works referencing / citing this record:

Sterile neutrinos with secret interactions—cosmological discord?
journal, November 2018


Thermalisation of sterile neutrinos in the early universe in the 3+1 scheme with full mixing matrix
journal, July 2019


Self-interacting sterile neutrino dark matter: The heavy-mediator case
journal, July 2019


Cosmological constraints on neutrino self-interactions with a light mediator
journal, November 2019


Sterile neutrino origin for the upward directed cosmic ray showers detected by ANITA
journal, March 2019


Constraining light sterile neutrino mass with the BICEP2/Keck array 2014 B-mode polarization data
journal, July 2019


Probing secret interactions of eV-scale sterile neutrinos with the diffuse supernova neutrino background
conference, December 2020

  • Reno, Mary Hall; Jeong, Yu Seon; Palomares-Ruiz, Sergio
  • Proceedings of 40th International Conference on High Energy physics — PoS(ICHEP2020)
  • https://doi.org/10.22323/1.390.0603

Probing secret interactions of eV-scale sterile neutrinos with the diffuse supernova neutrino background
journal, June 2018


Sterile Neutrinos with Secret Interactions -- Cosmological Discord?
text, January 2018


Revisiting constraints on 3 + 1 active-sterile neutrino mixing using IceCube data
journal, March 2019


Long range interactions in cosmology: implications for neutrinos
journal, May 2021


Flavour specific neutrino self-interaction: H 0 tension and IceCube
journal, October 2022


Cosmogenic neutrino fluxes under the effect of active-sterile secret interactions
journal, April 2020


Inflation models in the light of self-interacting sterile neutrinos
journal, April 2020


Decaying sterile neutrinos and the short baseline oscillation anomalies
journal, June 2020


Status of Light Sterile Neutrino Searches
text, January 2019