## Study of the decays $D^+\rightarrow\eta^{(\prime)} e^+\nu_{e}$

Ablikim, M. ; Achasov, M. N. ; Ahmed, S. ; Albrecht, M. ; Alekseev, M. ; Amoroso, A. ; An, F. F. ; An, Q. ; Bai, J. Z. ; Bai, Y. ; Bakina, O. ; Ferroli, R. Baldini ; Ban, Y. ; Bennett, D. W. ; Bennett, J. V. ; Berger, N. ; Bertani, M. ; Bettoni, D. ; Bian, J. M. ; Bianchi, F. ; Boger, E. ; Boyko, I. ; Briere, R. A. ; Cai, H. ; Cai, X.

The charm semileptonic decays $D^+\rightarrow\eta^{}e^+\nu_{e}$ and $D^+\rightarrow\eta^{(\prime)} e^+\nu_{e}$ are studied with a sample of e + e − collision data corresponding to an integrated luminosity of 2.93     fb − 1 collected at √ s = 3.773     GeV with the BESIII detector. We measure the branching fractions for $D^+\rightarrow\eta^{} e^+\nu_{e}$ to be ( 10.74 ± 0.81 ± 0.51 ) × 10$^{−4}$, and for $D^+\rightarrow\eta^{(\prime)} e^+\nu_{e}$ to be ( 1.91 ± 0.51 ± 0.13 ) × 10$^{−4}$ , where the uncertainties are statistical and systematic, respectively. In addition, we perform a measurement of the form factor in the decay $D^+\rightarrow\eta^{} e^+\nu_{e}$. All the results are consistent with those obtained by the CLEO-c experiment.

Publication Date:
May 31 2018
Date Submitted:
Jun 24 2019
Pagination:
92009
ISSN:
2470-0010
Citation:
Physical Review D
D97
9