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Title: Z B L ' portal dark matter and LHC Run-2 results

Journal Article · · Physical Review D
 [1];  [2]
  1. Univ. of Alabama, Tuscaloosa, AL (United States). Dept. of Physics adn Astronomy
  2. Yamagata Univ. (Japan). Graduate School of Science and Engineering

Here, we consider a concise dark matter scenario in the minimal gauged B-L extension of the Standard Model (SM), where the global B-L (baryon number minus lepton number) symmetry in the SM is gauged, and three generations of right-handed neutrinos and a B-L Higgs field are introduced. Associated with the B-L gauge symmetry breaking by a VEV of the B-L Higgs field, the seesaw mechanism for generating the neutrino mass is automatically implemented after the electroweak symmetry breaking in the SM. In this model context, we introduce a Z2-parity and assign an odd parity for one right-handed neutrino while even parities for the other fields. Thus, the dark matter candidate is identified as the right-handed Majorana neutrino with odd Z2 parity, keeping the minimality of the particle content intact. When the dark matter particle communicates with the SM particles mainly through the B-L gauge boson (Z'BL boson), its relic abundance is determined by only three free parameters, the B-L gauge coupling (αBL), the Z'BL boson mass (mZ') and the dark matter mass (mDM). With the cosmological upper bound on the dark matter relic abundance we find a lower bound on αBL as a function of mZ'. On the other hand, we interpret the recent LHC Run-2 results on search for Z' boson resonance to an upper bound on αBL as a function of mZ'. By combining the two results we identify an allowed parameter region for this "Z'BL portal" dark matter scenario, which turns out to be a narrow window with the lower mass bound of mZ'>2.5 TeV.

Research Organization:
Univ. of Alabama, Tuscaloosa, AL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
SC0013680
OSTI ID:
1365624
Journal Information:
Physical Review D, Vol. 93, Issue 7; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 83 works
Citation information provided by
Web of Science

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Cited By (17)

Phenomenological study of $$Z'$$ Z ′ in the minimal $$B-L$$ B - L model at LHC journal October 2017
Dark matter and collider signals in supersymmetric U ( 1 ) models with nonuniversal Z couplings journal December 2019
The $$B-L$$ B - L scotogenic models for Dirac neutrino masses journal December 2017
The waning of the WIMP? A review of models, searches, and constraints journal March 2018
$$Z'$$ Z ′ portal dark matter in $$B-L$$ B - L scotogenic Dirac model journal October 2018
Predictive scotogenic model with flavor dependent symmetry journal June 2019
Singlet scalar dark matter in U(1)B-L models without right-handed neutrinos journal November 2018
Z Portal Dark Matter in the Minimal B - L Model journal July 2018
Dark matter in anomaly-free gauge extensions journal January 2018
Whac-a-constraint with anomaly-free dark matter models journal January 2019
Neutrino-Dark Matter Connections in Gauge Theories text January 2020
Neutrino-Dark Matter Connections in Gauge Theories text January 2020
Phenomenological study of $Z'$ in the minimal $B-L$ model at LHC text January 2016
The Waning of the WIMP? A Review of Models, Searches, and Constraints text January 2017
The $B-L$ Scotogenic Models for Dirac Neutrino Masses text January 2017
Dark Matter in Anomaly-Free Gauge Extensions text January 2018
Predictive Scotogenic Model with Flavor Dependent Symmetry text January 2019

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