TY - JOUR
T1 - Closing in on the tip of the CMSSM stau coannihilation strip
AU - Desai, Nishita
AU - Ellis, John
AU - Luo, Feng
AU - Marrouche, Jad
PY - 2014/9
Y1 - 2014/9
N2 - Near the tip of the τ coannihilation strip in the CMSSM with a neutralino lightest supersymmetric particle χ, the astrophysical cold dark matter density constraint forces the τ-χ mass difference to be small. If this mass difference is smaller than mτ, the τ may decay either in the outer part of an LHC detector - the "disappearing track" signature - or be sufficiently long-lived to leave the detector before decaying - the long-lived massive charged-particle signature. We combine searches for these signatures with conventional ETmiss searches during LHC Run 1, identifying the small remaining parts of the CMSSM τ coannihilation strip region that have not yet been excluded and discussing how they may be explored during Run 2 of the LHC.
AB - Near the tip of the τ coannihilation strip in the CMSSM with a neutralino lightest supersymmetric particle χ, the astrophysical cold dark matter density constraint forces the τ-χ mass difference to be small. If this mass difference is smaller than mτ, the τ may decay either in the outer part of an LHC detector - the "disappearing track" signature - or be sufficiently long-lived to leave the detector before decaying - the long-lived massive charged-particle signature. We combine searches for these signatures with conventional ETmiss searches during LHC Run 1, identifying the small remaining parts of the CMSSM τ coannihilation strip region that have not yet been excluded and discussing how they may be explored during Run 2 of the LHC.
UR - http://www.scopus.com/inward/record.url?scp=84907437978&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.90.055031
DO - 10.1103/PhysRevD.90.055031
M3 - Article
AN - SCOPUS:84907437978
SN - 1550-7998
VL - 90
JO - Physical Review D (Particles, Fields, Gravitation and Cosmology)
JF - Physical Review D (Particles, Fields, Gravitation and Cosmology)
IS - 5
M1 - 055031
ER -