Journal
PHYSICAL REVIEW D
Volume 88, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.88.011901
Keywords
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Funding
- EU Network [UNILHC PITN-GA-2009-237920]
- Spanish MICINN [FPA2011-22975, MULTIDARK CSD2009-00064]
- Generalitat Valenciana [Prometeo/2009/091]
- Fondecyt [11121557, 1100582]
- CONICYT [791100017, CONICYT/DFG-648]
- DGF [PA 803/6-1]
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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.
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