Measurements of the Ratios ${\cal B}(D_s^+\to \eta\ell^+\nu)/{\cal   B}(D_s^+\to \phi\ell^+\nu)$ and ${\cal B}(D_s^+\to \eta'\ell^+\nu)/{\cal   B}(D_s^+\to \phi\ell^+\nu)$

CLEO Collaboration; G. Brandenburg et al

arXiv:hep-ex/9508009·hep-ex·November 26, 2008

Measurements of the Ratios ${\cal B}(D_s^+\to \eta\ell^+\nu)/{\cal B}(D_s^+\to \phi\ell^+\nu)$ and ${\cal B}(D_s^+\to \eta'\ell^+\nu)/{\cal B}(D_s^+\to \phi\ell^+\nu)$

CLEO Collaboration, G. Brandenburg et al

PDF

TL;DR

This paper reports precise measurements of branching ratios for specific semileptonic decays of the D_s^+ meson, providing insights into decay dynamics and quark flavor transitions.

Contribution

It presents new experimental measurements of several D_s^+ decay branching ratios, including ratios involving eta, eta', and phi mesons, with improved precision.

Findings

01

Measured branching ratios with uncertainties.

02

Found the vector to pseudoscalar ratio similar to non-strange D decays.

03

Provides data to test theoretical models of charm meson decays.

Abstract

Using the CLEO~II detector we measure $B (D_{s}^{+} \to η e^{+} ν) / B (D_{s}^{+} \to ϕ e^{+} ν) = 1.24 \pm 0.12 \pm 0.15$ , $B (D_{s}^{+} \to η^{'} e^{+} ν) / B (D_{s}^{+} \to ϕ e^{+} ν) = 0.43 \pm 0.11 \pm 0.07$ and $B (D_{s}^{+} \to η^{'} e^{+} ν) / B (D_{s}^{+} \to η e^{+} ν) = 0.35 \pm 0.09 \pm 0.07$ . We find the vector to pseudoscalar ratio, $B (D_{s}^{+} \to ϕ e^{+} ν) / B (D_{s}^{+} \to (η + η^{'}) e^{+} ν) = 0.60 \pm 0.06 \pm 0.06$ , which is similar to the ratio found in non strange $D$ decays.

Peer Reviews

No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.

Videos

No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.