PT Journal
AU Helo, JC
   Kovalenko, SG
   Hirsch, M
   Pas, H
TI Neutrinoless double beta decay and lepton number violation at the LHC
SO Physical Review D
JI Phys. Rev. D
PY 2013
BP 011901
EP 5pp
VL 88
IS 1
DI 10.1103/PhysRevD.88.011901
LA English
AB We compare the discovery potential of the LHC for lepton number violating (LNV) signals with the sensitivity of current and future double beta decay experiments, assuming 0 nu beta beta decay is dominated by heavy particle exchange. We consider charged scalar, leptoquark and diquark mechanisms of 0 nu beta beta decay, covering the 0 nu beta beta decay operators with both, the smallest and largest, possible rates. We demonstrate, if 0 nu beta beta decay were found with a half-life below 10(26)-10(27) years a positive signal should show up at the LHC, except for some particular cases of the leptoquark mechanism, and vice versa, if the LHC does not find any hints for LNV, a "short-range" explanation for a finite 0 nu beta beta decay half-life will be ruled out in most cases. We argue, if a positive LNV signal were found at the LHC, it is possible to identify the dominant contribution to 0 nu beta beta. Two different kinds of observables which could provide such "model discriminating" power are discussed: different invariant mass peaks and the charge asymmetry.
ER