Figure (IMAGE) Kanazawa University Caption Feynman diagrams for <i>p</i><i>p</i> → ℓ<sup>+</sup> ℓ'<sup>+</sup> <i>j</i><i>j</i> via the dimension-seven lepton-number violating operators. Credit Kanazawa University Usage Restrictions The image may only be used with appropriate caption and credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.