Hadronic Decays of Charmed Hadron

TL;DR

This paper presents measurements of strong-phase parameters, amplitude analyses, and branching fractions for various charmed hadron decays using BESIII data, aiding in precise CKM angle determination.

Contribution

It provides new strong-phase measurements, amplitude analyses, and branching fractions for multiple charmed hadron decays, enhancing understanding of charm decay dynamics.

Findings

Strong-phase parameters for several D^0 decays measured.

Amplitude analyses and branching fractions for D^+, D_s^+, and Λ_c^+ decays reported.

Λ_c^+ spin determined, contributing to charm baryon studies.

Abstract

The BESIII experiment has collected the $e^+e^-$ collision data samples corresponding to integrated luminosities of 2.93 $\mathrm{fb}^{-1}$, $3.19$ $\mathrm{fb}^{-1}$, 3.13 $\mathrm{fb}^{-1}$ and 567 $\mathrm{pb}^{-1}$ at center-of-mass energies of 3.773 GeV, 4.178 GeV, 4.189-4.226 GeV and 4.599 GeV, respectively. We report the measurements of strong-phase parameters based on the decays $D^0\to K^0_{S/L}\pi^+\pi^-$, $D^0\to K^0_{S/L}K^+K^-$, $D^0\to K^-\pi^+\pi^+\pi^-$ and $D^0\to K^-\pi^+\pi^0$, which are important input for binned model-independent measurement of the CKM angle $\gamma/\phi_3$. In addition, we report amplitude analyses and branching fraction measurements of $D^+$, $D_s^+$ and $\Lambda_c^+$ decays along with the $\Lambda_c^+$ spin determination.