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Title: Probing the seesaw mechanism at the 250 GeV ILC

Abstract

We consider a gauged U(1)B–L (Baryon-minus-Lepton number) extension of the Standard Model (SM), which is anomaly-free in the presence of three Right-Handed Neutrinos (RHNs). Associated with the U(1)B–L symmetry breaking the RHNs acquire their Majorana masses and then play the crucial role to generate the neutrino mass matrix by the seesaw mechanism. Towards the experimental confirmation of the seesaw mechanism, we investigate a RHN pair production through the U(1)B–L gauge boson (Z′) at the 250 GeV International Linear Collider (ILC). The Z′ gauge boson has been searched at the Large Hadron Collider (LHC) Run-2 and its production cross section is already severely constrained. The constraint will become more stringent by the future experiments with the High-Luminosity upgrade of the LHC (HL-LHC). We find a possibility that even after a null Z′ boson search result at the HL-LHC, the 250 GeV ILC can search for the RHN pair production through the final state with same-sign dileptons plus jets, which is a “smoking-gun” signature from the Majorana nature of RHNs. In addition, some of RHNs are long-lived and leave a clean signature with a displaced vertex. Therefore, the 250 GeV ILC can operate as not only a Higgs Factory but also amore » RHN discovery machine to explore the origin of the Majorana neutrino mass generation, namely the seesaw mechanism.« less

Authors:
ORCiD logo; ; ;
Publication Date:
Research Org.:
Univ. of Alabama, Tuscaloosa, AL (United States); Univ. of Delaware, Newark, DE (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1557892
Alternate Identifier(s):
OSTI ID: 1802519
Grant/Contract Number:  
SC0013680; SC0013880
Resource Type:
Published Article
Journal Name:
Physics Letters B
Additional Journal Information:
Journal Name: Physics Letters B Journal Volume: 797 Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; Astronomy & Astrophysics; Physics

Citation Formats

Das, Arindam, Okada, Nobuchika, Okada, Satomi, and Raut, Digesh. Probing the seesaw mechanism at the 250 GeV ILC. Netherlands: N. p., 2019. Web. doi:10.1016/j.physletb.2019.134849.
Das, Arindam, Okada, Nobuchika, Okada, Satomi, & Raut, Digesh. Probing the seesaw mechanism at the 250 GeV ILC. Netherlands. https://doi.org/10.1016/j.physletb.2019.134849
Das, Arindam, Okada, Nobuchika, Okada, Satomi, and Raut, Digesh. Tue . "Probing the seesaw mechanism at the 250 GeV ILC". Netherlands. https://doi.org/10.1016/j.physletb.2019.134849.
@article{osti_1557892,
title = {Probing the seesaw mechanism at the 250 GeV ILC},
author = {Das, Arindam and Okada, Nobuchika and Okada, Satomi and Raut, Digesh},
abstractNote = {We consider a gauged U(1)B–L (Baryon-minus-Lepton number) extension of the Standard Model (SM), which is anomaly-free in the presence of three Right-Handed Neutrinos (RHNs). Associated with the U(1)B–L symmetry breaking the RHNs acquire their Majorana masses and then play the crucial role to generate the neutrino mass matrix by the seesaw mechanism. Towards the experimental confirmation of the seesaw mechanism, we investigate a RHN pair production through the U(1)B–L gauge boson (Z′) at the 250 GeV International Linear Collider (ILC). The Z′ gauge boson has been searched at the Large Hadron Collider (LHC) Run-2 and its production cross section is already severely constrained. The constraint will become more stringent by the future experiments with the High-Luminosity upgrade of the LHC (HL-LHC). We find a possibility that even after a null Z′ boson search result at the HL-LHC, the 250 GeV ILC can search for the RHN pair production through the final state with same-sign dileptons plus jets, which is a “smoking-gun” signature from the Majorana nature of RHNs. In addition, some of RHNs are long-lived and leave a clean signature with a displaced vertex. Therefore, the 250 GeV ILC can operate as not only a Higgs Factory but also a RHN discovery machine to explore the origin of the Majorana neutrino mass generation, namely the seesaw mechanism.},
doi = {10.1016/j.physletb.2019.134849},
journal = {Physics Letters B},
number = C,
volume = 797,
place = {Netherlands},
year = {2019},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1016/j.physletb.2019.134849

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Cited by: 3 works
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Works referenced in this record:

Dirac neutrinos from a second Higgs doublet
journal, November 2009


Gauging symmetries and the number of right-handed neutrinos
journal, May 2009


Z -portal right-handed neutrino dark matter in the minimal U ( 1 ) X extended Standard Model
journal, February 2017


Enhanced pair production of heavy Majorana neutrinos at the LHC
journal, June 2018


Neutrino masses and the scale of B-L violation
journal, September 1981


Z gauge bosons at the Fermilab Tevatron
journal, November 2004


Z B L portal dark matter and LHC Run-2 results
journal, April 2016


Cold dark matter from heavy right-handed neutrino mixing
journal, October 2009


Displaced vertex signature of type-I seesaw model
journal, August 2018


TeV-scale seesaw from a multi-Higgs model
journal, August 2010


Neutrino masses, neutral vector bosons and the scale of B−L breaking
journal, September 1991


Horizontal Symmetry and Masses of Neutrinos
journal, September 1980


Heavy Majorana neutrino pair productions at the LHC in minimal U(1) extended Standard Model
journal, August 2018


A new two Higgs doublet model
journal, November 2007


Higgs portal dark matter in the minimal gauged U ( 1 ) B L model
journal, July 2010


μ→eγ at a rate of one out of 109 muon decays?
journal, April 1977


Z Portal Dark Matter in the Minimal B - L Model
journal, July 2018


First Measurement of Electron Neutrino Appearance in NOvA
journal, April 2016


Neutrino Mass and Spontaneous Parity Nonconservation
journal, April 1980


Combined Analysis of Neutrino and Antineutrino Oscillations at T2K
journal, April 2017


Neutrino masses in SU(2) ⊗ U(1) theories
journal, November 1980


Split two-Higgs-doublet model and neutrino condensation
journal, November 2006


Quark-lepton symmetry and B − L as the U(1) generator of the electroweak symmetry group
journal, April 1980


New avenues to heavy right-handed neutrinos with pair production at hadronic colliders
journal, April 2016


Naturally Small Seesaw Neutrino Mass with No New Physics Beyond the TeV Scale
journal, March 2001


Local B L Symmetry of Electroweak Interactions, Majorana Neutrinos, and Neutron Oscillations
journal, May 1980


B-L violating proton decay and late cosmological baryon production
journal, September 1982


Unbroken B – L symmetry
journal, December 2014


Spontaneous breaking of global B L symmetry and matter-antimatter oscillations in grand unified theories
journal, January 1983


Cosmological sign of neutrino CP violation
journal, November 2002