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Title: Bounds on heavy Majorana neutrinos in type-I seesaw and implications for collider searches

Abstract

The neutrino masses and flavor mixings, which are missing in the Standard Model (SM), can be naturally incorporated in the type-I seesaw extension of the SM with heavy Majorana neutrinos being singlet under the SM gauge group. If the heavy Majorana neutrinos are around the electroweak scale and their mixings with the SM neutrinos are sizable, they can be produced at high energy colliders, leaving characteristic signatures with lepton-number violations. Employing the general parametrization for the neutrino Dirac mass matrix in the minimal seesaw scenario, we perform a parameter scan and identify allowed regions to satisfy a variety of experimental constraints from the neutrino oscillation data, the electroweak precision measurements and the lepton-flavor violating processes. We find that the resultant mixing parameters between the heavy neutrinos and the SM neutrinos are more severely constrained than those obtained from the current search for heavy Majorana neutrinos at the LHC. Such parameter regions can be explored at the High-Luminosity LHC and a 100 TeV pp-collider in the future.

Authors:
ORCiD logo;
Publication Date:
Research Org.:
Univ. of Alabama, Tuscaloosa, AL (United States); Korea Inst. for Advanced Study (KIAS), Seoul (Korea, Republic of)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP); National Research Foundation of Korea (NRF); Ministry of Science, ICT and Future Planning (MSIP) of Korea
OSTI Identifier:
1393986
Alternate Identifier(s):
OSTI ID: 1499150
Grant/Contract Number:  
SC0013680; 2009-0083526
Resource Type:
Published Article
Journal Name:
Physics Letters B
Additional Journal Information:
Journal Name: Physics Letters B Journal Volume: 774 Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Das, Arindam, and Okada, Nobuchika. Bounds on heavy Majorana neutrinos in type-I seesaw and implications for collider searches. Netherlands: N. p., 2017. Web. https://doi.org/10.1016/j.physletb.2017.09.042.
Das, Arindam, & Okada, Nobuchika. Bounds on heavy Majorana neutrinos in type-I seesaw and implications for collider searches. Netherlands. https://doi.org/10.1016/j.physletb.2017.09.042
Das, Arindam, and Okada, Nobuchika. Wed . "Bounds on heavy Majorana neutrinos in type-I seesaw and implications for collider searches". Netherlands. https://doi.org/10.1016/j.physletb.2017.09.042.
@article{osti_1393986,
title = {Bounds on heavy Majorana neutrinos in type-I seesaw and implications for collider searches},
author = {Das, Arindam and Okada, Nobuchika},
abstractNote = {The neutrino masses and flavor mixings, which are missing in the Standard Model (SM), can be naturally incorporated in the type-I seesaw extension of the SM with heavy Majorana neutrinos being singlet under the SM gauge group. If the heavy Majorana neutrinos are around the electroweak scale and their mixings with the SM neutrinos are sizable, they can be produced at high energy colliders, leaving characteristic signatures with lepton-number violations. Employing the general parametrization for the neutrino Dirac mass matrix in the minimal seesaw scenario, we perform a parameter scan and identify allowed regions to satisfy a variety of experimental constraints from the neutrino oscillation data, the electroweak precision measurements and the lepton-flavor violating processes. We find that the resultant mixing parameters between the heavy neutrinos and the SM neutrinos are more severely constrained than those obtained from the current search for heavy Majorana neutrinos at the LHC. Such parameter regions can be explored at the High-Luminosity LHC and a 100 TeV pp-collider in the future.},
doi = {10.1016/j.physletb.2017.09.042},
journal = {Physics Letters B},
number = C,
volume = 774,
place = {Netherlands},
year = {2017},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1016/j.physletb.2017.09.042

Citation Metrics:
Cited by: 20 works
Citation information provided by
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Figures / Tables:

Fig. 1. Fig. 1. : The experimental constraints on the mixing matrix elements |$R$$αi$|2 = |$V$$αi$ |2 in the NH case. The allowed region is shaded. The results are shown with respect to −$π$ < $\delta$ < $π$ .

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Works referencing / citing this record:

Searching for the Minimal Seesaw Models at the LHC and Beyond
journal, April 2018


Searching for the Minimal Seesaw Models at the LHC and Beyond
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LHC search for right-handed neutrinos in Z′ models
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Jet substructure shedding light on heavy Majorana neutrinos at the LHC
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