TY - JOUR
T1 - Stop and sbottom LSP with R -parity violation
AU - Chun, Eung Jin
AU - Jung, Sunghoon
AU - Lee, Hyun Min
AU - Park, Seong Chan
N1 - Publisher Copyright:
© 2014 American Physical Society.
Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2014/12/1
Y1 - 2014/12/1
N2 - Considering a third-generation squark as the lightest supersymmetric particle (LSP), we investigate R-parity violating collider signatures with bilinear LH or trilinear LQD operators that may contribute to observed neutrino masses and mixings. Reinterpreting various LHC 7+8TeV results of supersymmetry and leptoquark searches, we find that third-generation squark LSPs decaying to first- or second-generation leptons are generally excluded up to at least about 660 GeV at 95% C.L. One notable feature of sbottom LSP models, as opposed to stop LSP models, is that sbottoms can decay to top quarks leading to a broader invariant mass spectrum and weaker constraints in current collider searches. More dedicated searches with b-taggings or top reconstructions are thus encouraged. Finally, we discuss that the recently observed excesses in the CMS leptoquark search can be accommodated by decays of mostly left-handed sbottom LSPs in the LQD113+131 model.
AB - Considering a third-generation squark as the lightest supersymmetric particle (LSP), we investigate R-parity violating collider signatures with bilinear LH or trilinear LQD operators that may contribute to observed neutrino masses and mixings. Reinterpreting various LHC 7+8TeV results of supersymmetry and leptoquark searches, we find that third-generation squark LSPs decaying to first- or second-generation leptons are generally excluded up to at least about 660 GeV at 95% C.L. One notable feature of sbottom LSP models, as opposed to stop LSP models, is that sbottoms can decay to top quarks leading to a broader invariant mass spectrum and weaker constraints in current collider searches. More dedicated searches with b-taggings or top reconstructions are thus encouraged. Finally, we discuss that the recently observed excesses in the CMS leptoquark search can be accommodated by decays of mostly left-handed sbottom LSPs in the LQD113+131 model.
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U2 - 10.1103/PhysRevD.90.115023
DO - 10.1103/PhysRevD.90.115023
M3 - Article
AN - SCOPUS:84923763474
VL - 90
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
SN - 1550-7998
IS - 11
M1 - 115023
ER -