Search for D0 →k-ηe+νe, D+ → KS0 ηe+νe and D+ →ηηe+νe decays


Ablikim M., Achasov M., Adlarson P., Afedulidis O., Ai X., Aliberti R., ...More

Physical Review D, vol.110, no.11, 2024 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 110 Issue: 11
  • Publication Date: 2024
  • Doi Number: 10.1103/physrevd.110.112001
  • Journal Name: Physical Review D
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, INSPEC, zbMATH, Nature Index
  • Istanbul University Affiliated: Yes

Abstract

By analyzing e+e- annihilation data corresponding to an integrated luminosity of 7.93 fb-1, collected at the center-of-mass energy of 3.773 GeV with the BESIII detector, we search for the semileptonic decays D0→K-ηe+νe, D+→KS0ηe+νe and D+→ηηe+νe for the first time. We present evidence for D0→K-ηe+νe with a significance of 3.3σ. The branching fraction of D0→K-ηe+νe is measured to be (0.84-0.34+0.29±0.22)×10-4. No significant signals are observed for the decays D+→KS0ηe+νe and D+→ηηe+νe and we set the upper limits on their branching fractions.