TY  - JOUR
AU  - Edelhauser, L.
AU  - Porod, W.
AU  - Singh, R. K.
PY  - 2010
DA  - 2010//
TI  - Spin discrimination in three-body decays
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 053
EP  - 31pp
VL  - 08
IS  - 8
PB  - Springer
KW  - Beyond Standard Model
KW  - Supersymmetric Standard Model
AB  - The identification of the correct model for physics beyond the Standard Model requires the determination of the spin of new particles. We investigate to which extent the spin of a new particle X can be identified in scenarios where it decays dominantly in three-body decays X -> f (f) over barY. Here we assume that Y is a candidate for dark matter and escapes direct detection at a high energy collider such as the LHC. We show that in the case that all intermediate particles are heavy, one can get information on the spins of X and Y at the LHC by exploiting the invariant mass distribution of the two standard model fermions. We develop a model-independent strategy to determine the spins without prior knowledge of the unknown couplings and test it in a series of Monte Carlo studies.
SN  - 1126-6708
UR  - http://arxiv.org/abs/1005.3720
UR  - https://doi.org/10.1007/JHEP08(2010)053
DO  - 10.1007/JHEP08(2010)053
LA  - English
N1  - ISI:000282368500014
ID  - Edelhauser_etal2010
ER  -