Abstract
We consider a U(1)′ extended supersymmetric model with a right-handed neutrino superfield which can generate light neutrino mass by Type I seesaw mechanism. The lighter superpartner of the right-handed neutrino could be the scalar dark matter. These right-handed sneutrinos can come from the decay of \( {\tilde{Z}}^{\prime } \), superpartner of the extra gauge boson Z ′. Left-right handed sneutrino mixings affect their decays further, giving rise to displaced “lepton flavour violating” signatures. A wino-like chargino NLSP (next to lightest supersymmetric particle) creates even more interesting decay topology. We investigate such displaced multi-leptonic final states with “lepton flavour violation” from the supersymmetric cascade decays of third generation squarks at the LHC.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
ATLAS and CMS collaborations, Combined measurement of the Higgs boson mass in pp collisions at \( \sqrt{s}=7 \) and 8 TeV with the ATLAS and CMS experiments, Phys. Rev. Lett. 114 (2015)191803 [arXiv:1503.07589] [INSPIRE].
R.N. Mohapatra et al., Theory of neutrinos: a white paper, Rept. Prog. Phys. 70 (2007) 1757 [hep-ph/0510213] [INSPIRE].
P. Langacker, The physics of heavy Z ′ gauge bosons, Rev. Mod. Phys. 81 (2009) 1199 [arXiv:0801.1345] [INSPIRE].
G. Jungman, M. Kamionkowski and K. Griest, Supersymmetric dark matter, Phys. Rept. 267 (1996) 195 [hep-ph/9506380] [INSPIRE].
S. Khalil and A. Masiero, Radiative B-L symmetry breaking in supersymmetric models, Phys. Lett. B 665 (2008) 374 [arXiv:0710.3525] [INSPIRE].
P. Bandyopadhyay, E.J. Chun and J.-C. Park, Right-handed sneutrino dark matter in U(1)′ seesaw models and its signatures at the LHC, JHEP 06 (2011) 129 [arXiv:1105.1652] [INSPIRE].
CMS collaboration, Searches for electroweak neutralino and chargino production in channels with Higgs, Z and W bosons in pp collisions at 8 TeV, Phys. Rev. D 90 (2014) 092007 [arXiv:1409.3168] [INSPIRE].
CMS collaboration, Searches for electroweak production of charginos, neutralinos and sleptons decaying to leptons and W , Z and Higgs bosons in pp collisions at 8 TeV, Eur. Phys. J. C 74 (2014) 3036 [arXiv:1405.7570] [INSPIRE].
P. Bandyopadhyay and E.J. Chun, Lepton flavour violating signature in supersymmetric U(1)′ seesaw models at the LHC, JHEP 05 (2015) 045 [arXiv:1412.7312] [INSPIRE].
E.J. Chun, Lepton-flavor violating signatures in supersymmetric U(1)′ seesaw, Int. J. Mod. Phys. A 30 (2015) 1530041 [INSPIRE].
U. Ellwanger, C. Hugonie and A.M. Teixeira, The next-to-minimal supersymmetric Standard Model, Phys. Rept. 496 (2010) 1 [arXiv:0910.1785] [INSPIRE].
ATLAS collaboration, Search for high-mass dilepton resonances in pp collisions at \( \sqrt{s}=8 \) TeV with the ATLAS detector, Phys. Rev. D 90 (2014) 052005 [arXiv:1405.4123] [INSPIRE].
CMS collaboration, Search for resonances in the dilepton mass distribution in pp collisions at \( \sqrt{s}=8 \) TeV, CMS-PAS-EXO-12-061, CERN, Geneva Switzerland, (2012).
K.R. Dienes, C.F. Kolda and J. March-Russell, Kinetic mixing and the supersymmetric gauge hierarchy, Nucl. Phys. B 492 (1997) 104 [hep-ph/9610479] [INSPIRE].
K.S. Babu, C.F. Kolda and J. March-Russell, Implications of generalized Z-Z ′ mixing, Phys. Rev. D 57 (1998) 6788 [hep-ph/9710441] [INSPIRE].
ATLAS collaboration, ATLAS run 1 searches for direct pair production of third-generation squarks at the Large Hadron Collider, Eur. Phys. J. C 75 (2015) 510 [Erratum ibid. C 76 (2016) 153] [arXiv:1506.08616] [INSPIRE].
CMS collaboration, Searches for third-generation squark production in fully hadronic final states in proton-proton collisions at \( \sqrt{s}=8 \) TeV, JHEP 06 (2015) 116 [arXiv:1503.08037] [INSPIRE].
A. Belyaev, N.D. Christensen and A. Pukhov, CalcHEP 3.4 for collider physics within and beyond the Standard Model, Comput. Phys. Commun. 184 (2013) 1729 [arXiv:1207.6082] [INSPIRE].
T. Sjöstrand, L. Lönnblad and S. Mrenna, PYTHIA 6.2: physics and manual, hep-ph/0108264 [INSPIRE].
M. Cacciari, G.P. Salam and G. Soyez, FastJet user manual, Eur. Phys. J. C 72 (2012) 1896 [arXiv:1111.6097] [INSPIRE].
CMS collaboration, I.R. Tomalin, b tagging in CMS, J. Phys. Conf. Ser. 110 (2008) 092033 [INSPIRE].
CMS collaboration, Observation of top quark pairs produced in association with a vector boson in pp collisions at \( \sqrt{s}=8 \) TeV, JHEP 01 (2016) 096 [arXiv:1510.01131] [INSPIRE].
ATLAS collaboration, Measurement of the \( t\overline{t}W \) and \( t\overline{t}Z \) production cross sections in pp collisions at \( \sqrt{s}=8 \) TeV with the ATLAS detector, JHEP 11 (2015) 172 [arXiv:1509.05276] [INSPIRE].
P. Bandyopadhyay and E.J. Chun, Displaced Higgs production in type-III seesaw, JHEP 11 (2010) 006 [arXiv:1007.2281] [INSPIRE].
C.A. de S. Pires, P.S. Rodrigues da Silva, A.C.O. Santos and C. Siqueira, Higgs mass and right-handed sneutrino WIMP in a supersymmetric 3-3-1 model, Phys. Rev. D 94 (2016) 055014 [arXiv:1606.01853] [INSPIRE].
W. Abdallah, J. Fiaschi, S. Khalil and S. Moretti, Z ′ -induced invisible right-handed sneutrino decays at the LHC, Phys. Rev. D 92 (2015) 055029 [arXiv:1504.01761] [INSPIRE].
K.-Y. Choi and O. Seto, A Dirac right-handed sneutrino dark matter and its signature in the gamma-ray lines, Phys. Rev. D 86 (2012) 043515 [Erratum ibid. D 86 (2012) 089904] [arXiv:1205.3276] [INSPIRE].
G. Bélanger, J. Da Silva and A. Pukhov, The right-handed sneutrino as thermal dark matter in U(1) extensions of the MSSM, JCAP 12 (2011) 014 [arXiv:1110.2414] [INSPIRE].
T. Asaka, K. Ishiwata and T. Moroi, Right-handed sneutrino as cold dark matter, Phys. Rev. D 73 (2006) 051301 [hep-ph/0512118] [INSPIRE].
D.G. Cerdeño, V. Martín-Lozano and O. Seto, Displaced vertices and long-lived charged particles in the NMSSM with right-handed sneutrinos, JHEP 05 (2014) 035 [arXiv:1311.7260] [INSPIRE].
A. de Gouvêa, S. Gopalakrishna and W. Porod, Stop decay into right-handed sneutrino LSP at hadron colliders, JHEP 11 (2006) 050 [hep-ph/0606296] [INSPIRE].
P.W. Graham, D.E. Kaplan, S. Rajendran and P. Saraswat, Displaced supersymmetry, JHEP 07 (2012) 149 [arXiv:1204.6038] [INSPIRE].
P. Bandyopadhyay, P. Ghosh and S. Roy, Unusual Higgs boson signal in R-parity violating nonminimal supersymmetric models at the LHC, Phys. Rev. D 84 (2011) 115022 [arXiv:1012.5762] [INSPIRE].
C. Petersson, Disappearing charged tracks in association with displaced leptons from supersymmetry, Nucl. Part. Phys. Proc. 273-275 (2016) 2372 [arXiv:1411.0632] [INSPIRE].
L. Calibbi, A. Mariotti, C. Petersson and D. Redigolo, Selectron NLSP in gauge mediation, JHEP 09 (2014) 133 [arXiv:1405.4859] [INSPIRE].
P. Bandyopadhyay, E.J. Chun and R. Mandal, Implications of right-handed neutrinos in B-L extended Standard Model with scalar dark matter, arXiv:1707.00874 [INSPIRE].
SHiP collaboration, P. Mermod, Right-handed neutrinos: the hunt is on!, arXiv:1704.08635 [INSPIRE].
R. Allahverdi, Y. Gao, B. Knockel and S. Shalgar, Indirect signals from solar dark matter annihilation to long-lived right-handed neutrinos, Phys. Rev. D 95 (2017) 075001 [arXiv:1612.03110] [INSPIRE].
S. Antusch, E. Cazzato and O. Fischer, Displaced vertex searches for sterile neutrinos at future lepton colliders, JHEP 12 (2016) 007 [arXiv:1604.02420] [INSPIRE].
E. Izaguirre and B. Shuve, Multilepton and lepton jet probes of sub-weak-scale right-handed neutrinos, Phys. Rev. D 91 (2015) 093010 [arXiv:1504.02470] [INSPIRE].
C. Kilic, T. Okui and R. Sundrum, Vectorlike confinement at the LHC, JHEP 02 (2010) 018 [arXiv:0906.0577] [INSPIRE].
J.L. Evans and N. Nagata, Signatures of leptoquarks at the LHC and right-handed neutrinos, Phys. Rev. D 92 (2015) 015022 [arXiv:1505.00513] [INSPIRE].
Open Access
This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
Author information
Authors and Affiliations
Corresponding author
Additional information
ArXiv ePrint: 1511.03842
Rights and permissions
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0), which permits use, duplication, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
About this article
Cite this article
Bandyopadhyay, P. Displaced lepton flavour violating signatures of right-handed sneutrinos in U(1)′ supersymmetric models. J. High Energ. Phys. 2017, 52 (2017). https://doi.org/10.1007/JHEP09(2017)052
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP09(2017)052