@inproceedings{aa9d8544c6a04688834790d6a50fa9d2,

title = "Searches for lepton number violation and resonances in the K± → ΠΜΜ decays at the NA48/2 experiment",

abstract = "The NA48/2 experiment at CERN collected a large sample of charged kaon decays into final states with multiple charged particles in 2003–2004. A new upper limit on the rate of the lepton number violating decay K± → π∓μ±μ± obtained from this sample is reported: B(K± → π∓μ±μ±) < 8.6 × 10−11 at 90% CL. Searches for two-body resonances in the K± → πμμ decays (including heavy neutral leptons N4 and inflatons χ) in the accessible range of masses and lifetimes are also presented. In the absence of a signal, upper limits are set on the products of branching ratios B(K± → μ±N4)B(N4 → π∓μ±) and B(K± → π±χ)B(χ → μ+μ−) as functions of the resonance mass and lifetime. These limits are in the 10−10 − 10−9 range for resonance lifetimes below 100 ps.",

author = "{NA48/2 Collaboration} and K. Massri and G. Anzivino and R. Arcidiacono and W. Baldini and S. Balev and Batley, {J. R.} and M. Behler and S. Bifani and C. Biino and A. Bizzeti and B. Bloch-Devaux and G. Bocquet and N. Cabibbo and M. Calvetti and N. Cartiglia and A. Ceccucci and P. Cenci and C. Cerri and C. Cheshkov and Ch{\`e}ze, {J. B.} and M. Clemencic and G. Collazuol and F. Costantini and {Cotta Ramusino}, A. and D. Coward and D. Cundy and A. Dabrowski and P. Dalpiaz and C. Damiani and {de Beer}, M. and J. Derr{\'e} and H. Dibon and L. DiLella and N. Doble and K. Eppard and V. Falaleev and R. Fantechi and M. Fidecaro and L. Fiorini and M. Fiorini and {Fonseca Martin}, T. and Frabetti, {P. L.} and L. Gatignon and E. Gersabeck and A. Gianoli and S. Giudici and A. Gonidec and E. Goudzovski and {Goy Lopez}, S. and M. Velasco",

year = "2016",

language = "English (US)",

series = "Proceedings of the 51st Rencontres de Moriond - 2016 Electroweak Interactions and Unified Theories, EW 2016",

publisher = "ARISF",

pages = "109--116",

editor = "Etienne Auge and Jacques Dumarchez and {Tron Thanh Van}, Jean",

booktitle = "Proceedings of the 51st Rencontres de Moriond - 2016 Electroweak Interactions and Unified Theories, EW 2016",

note = "51st Rencontres de Moriond on Electroweak Interactions and Unified Theories, EW 2016 ; Conference date: 12-03-2016 Through 19-03-2016",

}