Study of the doubly and singly Cabibbo suppressed decays D+ --> K+ pi+ pi- and Ds+ --> K+ pi+ pi-

TL;DR

This paper investigates the suppressed decay modes of D+ and Ds+ mesons into K+ pi+ pi- using data from the FOCUS experiment, performing branching ratio measurements and Dalitz plot analyses.

Contribution

It provides the first detailed measurements and Dalitz plot analyses of these specific suppressed decay channels of D+ and Ds+ mesons.

Findings

Branching ratios for D+ and Ds+ decays measured.

Dalitz plot analyses reveal decay dynamics.

Results improve understanding of charm meson decay mechanisms.

Abstract

Using data collected by the high energy photoproduction experiment FOCUS at Fermilab we study the doubly and singly Cabibbo suppressed decays D+ and Ds+ --> K+ pi+ pi-. Branching ratios and Dalitz plot analyses are performed.