Eur Phys J C (2004) 33: s557-s559
https://doi.org/10.1140/epjcd/s2004-03-1683-9

PS05 Hadronic Physics

Recent results on charm meson decays at FOCUS

INFN Sezione di Milano, Milano, Italy

Received: 10 October 2003
Accepted: 9 January 2004
Published online: 18 February 2004

Abstract

E831-FOCUS is a photoproduction experiment which collected data during the 1996/1997 fixed target run at Fermilab. More than 1 million charm particles have been reconstructed. Using this sample we measure the lifetimes of all the weakly decaying singly charmed particles, establishing the charm lifetime hierachy. Then we present recent results on semileptonic decays of charm mesons, including the new s-wave inteference phenomena in D ⁺ → K ^– π ⁺ μ ⁺ ν, and high statistics branching ratio and form factor measurements.

PACS: 13.20.Fc Decays of charmed mesons – 14.40.Lb Charmed mesons