skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Seeking for sterile neutrinos with displaced leptons at the LHC

Abstract

We study the signal of long-lived sterile neutrino at the LHC produced through the decay of the W boson. It decays into charged lepton and jets. The characteristic signature is a hard prompt lepton and a lepton from the displaced decay of the sterile neutrino, which leads to a bundle of displaced tracks with large transverse impact parameter. Different from other studies, we neither reconstruct the displaced vertex nor place requirement on its invariant mass to maintain sensitivity for low sterile neutrino masses. Instead, we focus on the displaced track from the lepton. A difficulty for low mass sterile neutrino study is that the displaced lepton is usually non-isolated.Therefore, leptons from heavy flavor quark is the major source of background. We closely follow a search for displaced electron plus muon search at CMS and study their control regions, which is related to our signal regions, in great detail to develop a robust estimation of the background for our signals. After further optimization on the signal limiting the number of jets, low H T and large lepton displacement d 0 to suppress SM background, we reach an exclusion sensitivity of about 10 -8 (10 -5) for the mixing angle square atmore » 10 (2) GeV sterile neutrino mass respectively. Thestrategy we propose can cover the light sterile masses complimentary to beam dumpand forward detector experiments« less

Authors:
 [1];  [2];  [3];  [4]
  1. Univ. of Chicago, IL (United States). Enrico Fermi Inst.
  2. Univ. of Maryland, College Park, MD (United States)
  3. Univ. of Chicago, IL (United States). Enrico Fermi Inst., and Kavli Inst. for Cosmological Physics
  4. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Univ. of Chicago, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1593919
Grant/Contract Number:  
SC0009924
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2019; Journal Issue: 7; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Beyond Standard Model; Neutrino Physics

Citation Formats

Liu, Jia, Liu, Zhen, Wang, Lian-Tao, and Wang, Xiao-Ping. Seeking for sterile neutrinos with displaced leptons at the LHC. United States: N. p., 2019. Web. doi:10.1007/JHEP07(2019)159.
Liu, Jia, Liu, Zhen, Wang, Lian-Tao, & Wang, Xiao-Ping. Seeking for sterile neutrinos with displaced leptons at the LHC. United States. doi:10.1007/JHEP07(2019)159.
Liu, Jia, Liu, Zhen, Wang, Lian-Tao, and Wang, Xiao-Ping. Fri . "Seeking for sterile neutrinos with displaced leptons at the LHC". United States. doi:10.1007/JHEP07(2019)159. https://www.osti.gov/servlets/purl/1593919.
@article{osti_1593919,
title = {Seeking for sterile neutrinos with displaced leptons at the LHC},
author = {Liu, Jia and Liu, Zhen and Wang, Lian-Tao and Wang, Xiao-Ping},
abstractNote = {We study the signal of long-lived sterile neutrino at the LHC produced through the decay of the W boson. It decays into charged lepton and jets. The characteristic signature is a hard prompt lepton and a lepton from the displaced decay of the sterile neutrino, which leads to a bundle of displaced tracks with large transverse impact parameter. Different from other studies, we neither reconstruct the displaced vertex nor place requirement on its invariant mass to maintain sensitivity for low sterile neutrino masses. Instead, we focus on the displaced track from the lepton. A difficulty for low mass sterile neutrino study is that the displaced lepton is usually non-isolated.Therefore, leptons from heavy flavor quark is the major source of background. We closely follow a search for displaced electron plus muon search at CMS and study their control regions, which is related to our signal regions, in great detail to develop a robust estimation of the background for our signals. After further optimization on the signal limiting the number of jets, low HT and large lepton displacement d0 to suppress SM background, we reach an exclusion sensitivity of about 10-8 (10-5) for the mixing angle square at 10 (2) GeV sterile neutrino mass respectively. Thestrategy we propose can cover the light sterile masses complimentary to beam dumpand forward detector experiments},
doi = {10.1007/JHEP07(2019)159},
journal = {Journal of High Energy Physics (Online)},
number = 7,
volume = 2019,
place = {United States},
year = {2019},
month = {7}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Light sterile neutrinos: Status and perspectives
journal, July 2016


NA62 sensitivity to heavy neutral leptons in the low scale seesaw model
journal, July 2018

  • Drewes, Marco; Hajer, Jan; Klaric, Juraj
  • Journal of High Energy Physics, Vol. 2018, Issue 7
  • DOI: 10.1007/JHEP07(2018)105

Enhancing Long-Lived Particles Searches at the LHC with Precision Timing Information
journal, April 2019


Neutrino-Less Double beta Decay and Particle Physics
journal, September 2011


A facility to search for hidden particles at the CERN SPS: the SHiP physics case
journal, October 2016


Inclusive displaced vertex searches for heavy neutral leptons at the LHC
journal, January 2019

  • Abada, Asmaa; Bernal, Nicolás; Losada, Marta
  • Journal of High Energy Physics, Vol. 2019, Issue 1
  • DOI: 10.1007/JHEP01(2019)093

Novel SM-like Higgs decay into displaced heavy neutrino pairs in U(1)′ models
journal, April 2017

  • Accomando, Elena; Rose, Luigi Delle; Moretti, Stefano
  • Journal of High Energy Physics, Vol. 2017, Issue 4
  • DOI: 10.1007/JHEP04(2017)081

Lepton Number Violation in Higgs Decay at LHC
journal, August 2015


Probing heavy neutrino oscillations in rare W boson decays
journal, May 2019

  • Cvetič, Gorazd; Das, Arindam; Zamora-Saá, Jilberto
  • Journal of Physics G: Nuclear and Particle Physics, Vol. 46, Issue 7
  • DOI: 10.1088/1361-6471/ab1212

Mechanism for understanding small neutrino mass in superstring theories
journal, February 1986


Phenomenology of GeV-scale heavy neutral leptons
journal, November 2018

  • Bondarenko, Kyrylo; Boyarsky, Alexey; Gorbunov, Dmitry
  • Journal of High Energy Physics, Vol. 2018, Issue 11
  • DOI: 10.1007/JHEP11(2018)032

Neutrinos and collider physics
journal, July 2015


Lepton Number Violation: Seesaw Models and Their Collider Tests
journal, May 2018


Further limits on heavy neutrino couplings
journal, March 1988


Majorana Higgses at colliders
journal, April 2017

  • Nemevšek, Miha; Nesti, Fabrizio; Vasquez, Juan Carlos
  • Journal of High Energy Physics, Vol. 2017, Issue 4
  • DOI: 10.1007/JHEP04(2017)114

Identification of b-quark jets with the CMS experiment
journal, April 2013


Sterile neutrino searches via displaced vertices at LHCb
journal, November 2017


The seesaw portal in testable models of neutrino masses
journal, June 2017

  • Caputo, A.; Hernández, P.; López-Pavón, J.
  • Journal of High Energy Physics, Vol. 2017, Issue 6
  • DOI: 10.1007/JHEP06(2017)112

Sterile neutrinos in lepton number and lepton flavor violating decays
journal, December 2011


Shedding light on neutrino masses with dark forces
journal, August 2016

  • Batell, Brian; Pospelov, Maxim; Shuve, Brian
  • Journal of High Energy Physics, Vol. 2016, Issue 8
  • DOI: 10.1007/JHEP08(2016)052

Heavy Majorana neutrinos from Wγ fusion at hadron colliders
journal, February 2015

  • Alva, Daniel; Han, Tao; Ruiz, Richard
  • Journal of High Energy Physics, Vol. 2015, Issue 2
  • DOI: 10.1007/JHEP02(2015)072

Horizontal Symmetry and Masses of Neutrinos
journal, September 1980


The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
journal, July 2014

  • Alwall, J.; Frederix, R.; Frixione, S.
  • Journal of High Energy Physics, Vol. 2014, Issue 7
  • DOI: 10.1007/JHEP07(2014)079

Neutrinoless double beta decay in seesaw models
journal, July 2010

  • Blennow, Mattias; Fernandez-Martinez, Enrique; Lopez-Pavon, Jacobo
  • Journal of High Energy Physics, Vol. 2010, Issue 7
  • DOI: 10.1007/JHEP07(2010)096

Heavy neutral fermions at the high-luminosity LHC
journal, July 2018

  • Helo, Juan Carlos; Hirsch, Martin; Wang, Zeren Simon
  • Journal of High Energy Physics, Vol. 2018, Issue 7
  • DOI: 10.1007/JHEP07(2018)056

Review of Particle Physics
journal, August 2018


Neutrino Mass and Spontaneous Parity Nonconservation
journal, April 1980


Updated global 3+1 analysis of short-baseline neutrino oscillations
journal, June 2017

  • Gariazzo, S.; Giunti, C.; Laveder, M.
  • Journal of High Energy Physics, Vol. 2017, Issue 6
  • DOI: 10.1007/JHEP06(2017)135

Search for heavy neutrinos at the IHEP-JINR Neutrino Detector
journal, March 1993


Majorana Neutrinos and the Production of the Right-Handed Charged Gauge Boson
journal, May 1983


Displaced vertex searches for sterile neutrinos at future lepton colliders
journal, December 2016

  • Antusch, Stefan; Cazzato, Eros; Fischer, Oliver
  • Journal of High Energy Physics, Vol. 2016, Issue 12
  • DOI: 10.1007/JHEP12(2016)007

Updated global analysis of neutrino oscillations in the presence of eV-scale sterile neutrinos
journal, August 2018

  • Dentler, Mona; Hernández-Cabezudo, Álvaro; Kopp, Joachim
  • Journal of High Energy Physics, Vol. 2018, Issue 8
  • DOI: 10.1007/JHEP08(2018)010

Sterile neutrino oscillations: the global picture
journal, May 2013

  • Kopp, Joachim; Machado, Pedro A. N.; Maltoni, Michele
  • Journal of High Energy Physics, Vol. 2013, Issue 5
  • DOI: 10.1007/JHEP05(2013)050

The search for heavy Majorana neutrinos
journal, May 2009


Massless neutrinos in left-hand symmetric models
journal, May 1983


Signatures for Majorana Neutrinos at Hadron Colliders
journal, October 2006


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
  • DOI: 10.1007/JHEP02(2018)109

Sterile neutrinos or flux uncertainties? — Status of the reactor anti-neutrino anomaly
journal, November 2017

  • Dentler, Mona; Hernández-Cabezudo, Álvaro; Kopp, Joachim
  • Journal of High Energy Physics, Vol. 2017, Issue 11
  • DOI: 10.1007/JHEP11(2017)099

Search for heavy neutrino decays in the BEBC beam dump experiment
journal, October 1985