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Title: Shedding light on neutrino masses with dark forces

Journal Article · · Journal of High Energy Physics (Online)
 [1];  [2];  [3]
  1. Univ. of Pittsburgh, Pittsburgh, PA (United States)
  2. Perimeter Institute for Theoretical Physics, Waterloo, ON (Canada); Univ. of Victoria, Victoria, BC (Canada)
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States)

Heavy right-handed neutrinos, N , provide the simplest explanation for the origin of light neutrino masses and mixings. If MN is at or below the weak scale, direct experimental discovery of these states is possible at accelerator experiments such as the LHC or new dedicated beam dump experiments; in these experiments, N decays after traversing a macroscopic distance from the collision point. The experimental sensitivity to right-handed neutrinos is significantly enhanced if there is a new “dark” gauge force connecting them to the Standard Model (SM), and detection of N can be the primary discovery mode for the new dark force itself. We take the well-motivated example of a B – L gauge symmetry and analyze the sensitivity to displaced decays of N produced via the new gauge interaction in two experiments: the LHC and the proposed SHiP beam dump experiment. In the most favorable case in which the mediator can be produced on-shell and decays to right handed neutrinos (pp → X + VB–L → X + N N ), the sensitivity reach is controlled by the square of the B – L gauge coupling. Here, we demonstrate that these experiments could access neutrino parameters responsible for the observed SM neutrino masses and mixings in the most straightforward implementation of the see-saw mechanism.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1325937
Journal Information:
Journal of High Energy Physics (Online), Vol. 2016, Issue 8; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 58 works
Citation information provided by
Web of Science

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Cited By (28)

LHC search for right-handed neutrinos in Z′ models journal January 2018
Right-handed neutrino dark matter under the B − L gauge interaction journal February 2017
LHC constraints on a B − L gauge model using Contur journal May 2019
Seeking for sterile neutrinos with displaced leptons at the LHC journal July 2019
Neutrino masses and absence of flavor changing interactions in the 2HDM from gauge principles journal August 2017
The dispirited case of gauged U(1)B − L dark matter journal August 2018
Displaced heavy neutrinos from Z′ decays at the LHC journal December 2019
Long-lived particles at the energy frontier: the MATHUSLA physics case journal October 2019
Heavy neutrino production via Z at the lifetime frontier journal August 2019
BBN for the LHC: Constraints on lifetimes of the Higgs portal scalars journal October 2017
Analysis of long-lived particle decays with the MATHUSLA detector journal January 2018
Search for long-lived neutral particles in pp collisions at $${\sqrt{s}} = 13~{\text { TeV}}$$ s = 13 TeV that decay into displaced hadronic jets in the ATLAS calorimeter journal June 2019
Probing new physics with displaced vertices: Muon tracker at CMS text January 2019
New physics opportunities for long-lived particles at electron-proton colliders text January 2018
Thermal Dark Matter From A Highly Decoupled Sector text January 2016
MeV-scale sterile neutrino decays at the Fermilab Short-Baseline Neutrino program text January 2016
QCD-Electroweak First-Order Phase Transition in a Supercooled Universe text January 2017
Neutrino Masses and Absence of Flavor Changing Interactions in the 2HDM from Gauge Principles text January 2017
Analysis of Long Lived Particle Decays with the MATHUSLA Detector text January 2017
Searching for Long-lived Particles: A Compact Detector for Exotics at LHCb text January 2017
New Physics Opportunities for Long-Lived Particles at Electron-Proton Colliders text January 2017
Long-lived Heavy Neutrinos from Higgs Decays text January 2018
The Dispirited Case of Gauged $U(1)_{B-L}$ Dark Matter text January 2018
Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case text January 2018
LHC Constraints on a $B-L$ Gauge Model using Contur text January 2018
Non-Standard Neutrino Interactions and Neutral Gauge Bosons text January 2018
Seeking for sterile neutrinos with displaced leptons at the LHC text January 2019
Displaced heavy neutrinos from $Z'$ decays at the LHC text January 2019

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