Using a high statistics sample of photo-produced charm particles from the FOCUS experiment at Fermilab, we report results of a search for eight rare and Standard-Model-forbidden decays: D+, Ds+ → h±μ∓μ+ (with h = π, K). Improvement over previous results by a factor of 1.7-14 is realized. Our branching ratio upper limit D+ → π+μ -μ+ of 8.8 × 10-6 at the 90% C.L. is below the current MSSM R-parity violating constraint.
|Original language||English (US)|
|Number of pages||11|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|State||Published - Oct 16 2003|
ASJC Scopus subject areas
- Nuclear and High Energy Physics