# Heavy Majorana neutrino pair productions at the LHC in minimal U(1) extended Standard Model

## Abstract

In our recent paper (Das et al. in Phys Rev D 97:115023, 2018) we explored a prospect of discovering the heavy Majorana right-handed neutrinos (RHNs) at the future LHC in the context of the minimal non-exotic U(1) extended Standard Model (SM), where a pair of RHNs are created via decay of resonantly produced massive U(1) gauge boson (Z'). We have pointed out that this model can yield a significant enhancement of the branching ratio of the Z' boson to a pair of RHNs, which is crucial for discovering the RHNs under the very severe LHC Run-2 constraint from the search for the Z' boson with dilepton final states. In this paper, we perform a general parameter scan to evaluate the maximum production rate of the same-sign dilepton final states (smoking gun signature of Majorana RHNs production) at the LHC, while reproducing the neutrino oscillation data. We also consider the minimal non-exotic U(1) model with an alternative charge assignment. In this case, we find a further enhancement of the branching ratio of the Z' boson to a pair of RHNs compared to the conventional case, which opens up a possibility of discovering the RHNs even before the Z' boson at themore »

- Authors:

- Publication Date:

- Research Org.:
- Univ. of Alabama, Tuscaloosa, AL (United States)

- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)

- OSTI Identifier:
- 1467917

- Alternate Identifier(s):
- OSTI ID: 1510003

- Grant/Contract Number:
- SC0013680

- Resource Type:
- Published Article

- Journal Name:
- European Physical Journal. C, Particles and Fields

- Additional Journal Information:
- Journal Name: European Physical Journal. C, Particles and Fields Journal Volume: 78 Journal Issue: 9; Journal ID: ISSN 1434-6044

- Publisher:
- Springer Science + Business Media

- Country of Publication:
- Germany

- Language:
- English

- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

### Citation Formats

```
Das, Arindam, Okada, Nobuchika, and Raut, Digesh. Heavy Majorana neutrino pair productions at the LHC in minimal U(1) extended Standard Model. Germany: N. p., 2018.
Web. doi:10.1140/epjc/s10052-018-6171-8.
```

```
Das, Arindam, Okada, Nobuchika, & Raut, Digesh. Heavy Majorana neutrino pair productions at the LHC in minimal U(1) extended Standard Model. Germany. doi:https://doi.org/10.1140/epjc/s10052-018-6171-8
```

```
Das, Arindam, Okada, Nobuchika, and Raut, Digesh. Fri .
"Heavy Majorana neutrino pair productions at the LHC in minimal U(1) extended Standard Model". Germany. doi:https://doi.org/10.1140/epjc/s10052-018-6171-8.
```

```
@article{osti_1467917,
```

title = {Heavy Majorana neutrino pair productions at the LHC in minimal U(1) extended Standard Model},

author = {Das, Arindam and Okada, Nobuchika and Raut, Digesh},

abstractNote = {In our recent paper (Das et al. in Phys Rev D 97:115023, 2018) we explored a prospect of discovering the heavy Majorana right-handed neutrinos (RHNs) at the future LHC in the context of the minimal non-exotic U(1) extended Standard Model (SM), where a pair of RHNs are created via decay of resonantly produced massive U(1) gauge boson (Z'). We have pointed out that this model can yield a significant enhancement of the branching ratio of the Z' boson to a pair of RHNs, which is crucial for discovering the RHNs under the very severe LHC Run-2 constraint from the search for the Z' boson with dilepton final states. In this paper, we perform a general parameter scan to evaluate the maximum production rate of the same-sign dilepton final states (smoking gun signature of Majorana RHNs production) at the LHC, while reproducing the neutrino oscillation data. We also consider the minimal non-exotic U(1) model with an alternative charge assignment. In this case, we find a further enhancement of the branching ratio of the Z' boson to a pair of RHNs compared to the conventional case, which opens up a possibility of discovering the RHNs even before the Z' boson at the future LHC experiment.},

doi = {10.1140/epjc/s10052-018-6171-8},

journal = {European Physical Journal. C, Particles and Fields},

number = 9,

volume = 78,

place = {Germany},

year = {2018},

month = {8}

}

DOI: https://doi.org/10.1140/epjc/s10052-018-6171-8

*Citation information provided by*

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Works referenced in this record:

##
Gauging symmetries and the number of right-handed neutrinos

journal, May 2009

- Montero, J. C.; Pleitez, V.
- Physics Letters B, Vol. 675, Issue 1

##
NLO+NLL collider bounds, Dirac fermion and scalar dark matter in the B–L model

journal, May 2017

- Klasen, Michael; Lyonnet, Florian; Queiroz, Farinaldo S.
- The European Physical Journal C, Vol. 77, Issue 5

##
Dirac or inverse seesaw neutrino masses with $B-L$ gauge symmetry and ${S}_{3}$ flavor symmetry

journal, February 2015

- Ma, Ernest; Srivastava, Rahul
- Physics Letters B, Vol. 741

##
${Z}^{\prime}$ -portal right-handed neutrino dark matter in the minimal ${\mathrm{U}(1)}_{X}$ extended Standard Model

journal, February 2017

- Okada, Nobuchika; Okada, Satomi
- Physical Review D, Vol. 95, Issue 3

##
Enhanced pair production of heavy Majorana neutrinos at the LHC

journal, June 2018

- Das, Arindam; Okada, Nobuchika; Raut, Digesh
- Physical Review D, Vol. 97, Issue 11

##
Neutrino masses and the scale of B-L violation

journal, September 1981

- Wetterich, C.
- Nuclear Physics B, Vol. 187, Issue 2

##
${Z}^{\prime}$ gauge bosons at the Fermilab Tevatron

journal, November 2004

- Carena, Marcela; Daleo, Alejandro; Dobrescu, Bogdan A.
- Physical Review D, Vol. 70, Issue 9

##
Vacuum stability in $U(1)$ -prime extensions of the Standard Model with TeV scale right handed neutrinos

journal, November 2014

- Corianò, Claudio; Delle Rose, Luigi; Marzo, Carlo
- Physics Letters B, Vol. 738

##
Search for new high-mass phenomena in the dilepton final state using 36 fb−1 of proton-proton collision data at s =
13 $$ \sqrt{s}=13 $$ TeV with the ATLAS detector

journal, October 2017

- Aaboud, M.; Aad, G.; Abbott, B.
- Journal of High Energy Physics, Vol. 2017, Issue 10

##
Right-handed neutrino dark matter in the classically conformal ${\mathrm{U}(1)}^{\prime}$ extended standard model

journal, November 2017

- Oda, Satsuki; Okada, Nobuchika; Takahashi, Dai-suke
- Physical Review D, Vol. 96, Issue 9

##
Inflection-point inflation in a hyper-charge oriented ${\mathrm{U}(1)}_{X}$ model

journal, March 2017

- Okada, Nobuchika; Okada, Satomi; Raut, Digesh
- Physical Review D, Vol. 95, Issue 5

##
Phenomenology of the gauge symmetry for right-handed fermions

journal, February 2018

- Chao, Wei
- The European Physical Journal C, Vol. 78, Issue 2

##
Neutrino masses, neutral vector bosons and the scale of B−L breaking

journal, September 1991

- Buchmüller, W.; Greub, C.; Minkowski, P.
- Physics Letters B, Vol. 267, Issue 3

##
Z ′, Higgses and heavy neutrinos in U(1)′ models: from the LHC to the GUT scale

journal, July 2016

- Accomando, Elena; Corianò, Claudio; Rose, Luigi Delle
- Journal of High Energy Physics, Vol. 2016, Issue 7

##
LHC search for right-handed neutrinos in Z′ models

journal, January 2018

- Cox, Peter; Han, Chengcheng; Yanagida, Tsutomu T.
- Journal of High Energy Physics, Vol. 2018, Issue 1

##
Nonexotic neutral gauge bosons

journal, August 2003

- Appelquist, Thomas; Dobrescu, Bogdan A.; Hopper, Adam R.
- Physical Review D, Vol. 68, Issue 3

##
SU(5)×U(1) X grand unification with minimal seesaw and Z ′ -portal dark matter

journal, May 2018

- Okada, Nobuchika; Okada, Satomi; Raut, Digesh
- Physics Letters B, Vol. 780

##
μ→eγ at a rate of one out of 109 muon decays?

journal, April 1977

- Minkowski, Peter
- Physics Letters B, Vol. 67, Issue 4

##
Neutrino Mass and Spontaneous Parity Nonconservation

journal, April 1980

- Mohapatra, Rabindra N.; Senjanović, Goran
- Physical Review Letters, Vol. 44, Issue 14

##
Oscillating neutrinos and μ→e,γ

journal, December 2001

- Casas, J. A.; Ibarra, A.
- Nuclear Physics B, Vol. 618, Issue 1-2

##
Classically conformal $\mathrm{U}(1{)}^{\prime}$ extended standard model and Higgs vacuum stability

journal, July 2015

- Oda, Satsuki; Okada, Nobuchika; Takahashi, Dai-suke
- Physical Review D, Vol. 92, Issue 1

##
Radiative symmetry breaking from flat potential in various $U(1{)}^{\prime}$ models

journal, March 2014

- Hashimoto, Michio; Iso, Satoshi; Orikasa, Yuta
- Physical Review D, Vol. 89, Issue 5

##
Classically conformal ${\mathrm{U}(1)}^{\prime}$ extended standard model, electroweak vacuum stability, and LHC Run-2 bounds

journal, June 2016

- Das, Arindam; Oda, Satsuki; Okada, Nobuchika
- Physical Review D, Vol. 93, Issue 11

##
Is charged lepton flavor violation a high energy phenomenon?

journal, March 2014

- Deppisch, Frank F.; Desai, Nishita; Valle, José W. F.
- Physical Review D, Vol. 89, Issue 5

##
Quark-lepton symmetry and B − L as the U(1) generator of the electroweak symmetry group

journal, April 1980

- Marshak, R. E.; Mohapatra, R. N.
- Physics Letters B, Vol. 91, Issue 2

##
New avenues to heavy right-handed neutrinos with pair production at hadronic colliders

journal, April 2016

- Kang, Zhaofeng; Ko, P.; Li, Jinmian
- Physical Review D, Vol. 93, Issue 7

##
Nonminimal quartic inflation in classically conformal ${\mathrm{U}(1)}_{X}$ extended standard model

journal, March 2018

- Oda, Satsuki; Okada, Nobuchika; Raut, Digesh
- Physical Review D, Vol. 97, Issue 5

##
Measurements of neutrino oscillation in appearance and disappearance channels by the T2K experiment with $6.6\times 1{0}^{20}$ protons on target

journal, April 2015

- Abe, K.; Adam, J.; Aihara, H.
- Physical Review D, Vol. 91, Issue 7

##
Naturally stable right-handed neutrino dark matter

journal, November 2016

- Bhupal Dev, P. S.; Mohapatra, Rabindra N.; Zhang, Yongchao
- Journal of High Energy Physics, Vol. 2016, Issue 11

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

journal, November 2017

- Das, Arindam; Okada, Nobuchika
- Physics Letters B, Vol. 774

##
Large mixing angle MSW and atmospheric neutrinos from single right-handed neutrino dominance and U(1) family symmetry

journal, June 2000

- King, S. F.
- Nuclear Physics B, Vol. 576, Issue 1-3

##
Local $B-L$ Symmetry of Electroweak Interactions, Majorana Neutrinos, and Neutron Oscillations

journal, May 1980

- Mohapatra, R. N.; Marshak, R. E.
- Physical Review Letters, Vol. 44, Issue 20

##
Flavoured B − L local symmetry and anomalous rare B decays

journal, November 2017

- Alonso, Rodrigo; Cox, Peter; Han, Chengcheng
- Physics Letters B, Vol. 774

##
B-L violating proton decay and late cosmological baryon production

journal, September 1982

- Masiero, A.; Nieves, J. F.; Yanagida, T.
- Physics Letters B, Vol. 116, Issue 1

##
Baryon- and Lepton-Nonconserving Processes

journal, November 1979

- Weinberg, Steven
- Physical Review Letters, Vol. 43, Issue 21

##
Spontaneous breaking of global $B-L$ symmetry and matter-antimatter oscillations in grand unified theories

journal, January 1983

- Mohapatra, Rabindra N.; Senjanović, Goran
- Physical Review D, Vol. 27, Issue 1

##
Extra Higgs boson and Z′ as portals to signatures of heavy neutrinos at the LHC

journal, February 2018

- Accomando, Elena; Rose, Luigi Delle; Moretti, Stefano
- Journal of High Energy Physics, Vol. 2018, Issue 2

##
Cosmological sign of neutrino CP violation

journal, November 2002

- Frampton, P. H.; Glashow, S. L.; Yanagida, T.
- Physics Letters B, Vol. 548, Issue 3-4

Works referencing / citing this record:

##
Displaced heavy neutrinos from Z′ decays at the LHC

journal, December 2019

- Chiang, Cheng-Wei; Cottin, Giovanna; Das, Arindam
- Journal of High Energy Physics, Vol. 2019, Issue 12

##
Generating lepton masses and mixings with a heavy vector doublet

journal, October 2019

- Hernández, A. E. Cárcamo; Vignatti, Jonatan; Zerwekh, Alfonso
- Journal of Physics G: Nuclear and Particle Physics, Vol. 46, Issue 11

##
Heavy neutrino production via ${Z}^{\prime}$ at the lifetime frontier

journal, August 2019

- Deppisch, Frank F.; Kulkarni, Suchita; Liu, Wei
- Physical Review D, Vol. 100, Issue 3

##
Natural ${Z}^{\prime}$ -portal Majorana dark matter in alternative U(1) extended standard model

journal, August 2019

- Okada, Nobuchika; Okada, Satomi; Raut, Digesh
- Physical Review D, Vol. 100, Issue 3

##
Searching for a light ${Z}^{\prime}$ through Higgs production at the LHC

journal, December 2019

- Deppisch, Frank F.; Kulkarni, Suchita; Liu, Wei
- Physical Review D, Vol. 100, Issue 11

##
Exploring dark matter, neutrino mass, and ${R}_{{K}^{\mathbf{(}*\mathbf{)}},\varphi}$ anomalies in ${L}_{\mu}-{L}_{\tau}$ model

journal, February 2019

- Singirala, Shivaramakrishna; Sahoo, Suchismita; Mohanta, Rukmani
- Physical Review D, Vol. 99, Issue 3

##
Whac-a-constraint with anomaly-free dark matter models

journal, January 2019

- El Hedri, Sonia; Nordström, Karl
- SciPost Physics, Vol. 6, Issue 2