Recent Results from Fermilab Charm Experiment E791

TL;DR

This paper presents recent Fermilab E791 charm experiment results, including searches for rare decays, form factor measurements, and lifetime analyses, providing insights into charm quark behavior and mixing phenomena.

Contribution

It reports new measurements and searches related to charm mesons, including the first direct search for D0 lifetime difference relevant to mixing.

Findings

Constraints on rare and forbidden charm decays

Measured form factors for D+ and Ds decays

First direct search for D0 lifetime difference

Abstract

We report the results of some recent E791 charm analyses. They include: 1) a search for rare and forbidden decays, 2) measurements of form factors for D+ --> K*,l,nu and Ds --> phi,l,nu, and 3) Ds and D0 lifetime measurements including the lifetime difference between D0-->Kpi and D0-->KK. The latter is the first direct search for a possible lifetime difference that could contribute to D0-D0bar mixing.