0000000001317779
AUTHOR
M. Peters
Searches for lepton number violation and resonances in K± → πμμ decays
The NA48/2 experiment at CERN collected a large sample of charged kaon decays to 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± is reported: B(K±→π∓μ±μ±)<8.6×10−11 at 90% CL. Searches for two-body resonances X in K±→πμμ decays (such as heavy neutral leptons N4 and inflatons χ ) are also presented. In the absence of signals, upper limits are set on the products of branching fractions B(K±→μ±N4)B(N4→πμ) and B(K±→π±X)B(X→μ+μ−) for ranges of assumed resonance masses and lifetimes. The limits are in the (10−11,10−9) range for resonance lifetimes below 100 ps.
CCDC 872223: Experimental Crystal Structure Determination
Related Article: M.Giese, M.Albrecht, T.Krappitz, M.Peters, V.Gossen, G.Raabe, A.Valkonen, K.Rissanen|2012|Chem.Commun.|48|9983|doi:10.1039/c2cc34748b
CCDC 872224: Experimental Crystal Structure Determination
Related Article: M.Giese, M.Albrecht, T.Krappitz, M.Peters, V.Gossen, G.Raabe, A.Valkonen, K.Rissanen|2012|Chem.Commun.|48|9983|doi:10.1039/c2cc34748b