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Measurement of the form factors in the decay D+ →ωe+νe and search for the decay D+ →φe+νe

  • M. Ablikim
  • , M. N. Achasov
  • , X. C. Ai
  • , O. Albayrak
  • , M. Albrecht
  • , D. J. Ambrose
  • , A. Amoroso
  • , F. F. An
  • , Q. An
  • , J. Z. Bai
  • , R. Baldini Ferroli
  • , Y. Ban
  • , D. W. Bennett
  • , J. V. Bennett
  • , M. Bertani
  • , D. Bettoni
  • , J. M. Bian
  • , F. Bianchi
  • , E. Boger
  • , I. Boyko
  • R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, H. Y. Chen, J. C. Chen, M. L. Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, G. Cibinetto, H. L. Dai, J. P. Dai, A. Dbeyssi, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, H. Muramatsu, R. Poling, BESIII Collaboration

Research output: Contribution to journalArticlepeer-review

Abstract

Using 2.92 fb-1 of electron-positron annihilation data collected at a center-of-mass energy of s=3.773 GeV with the BESIII detector, we present an improved measurement of the branching fraction B(D+→ωe+νe)=(1.63±0.11±0.08)×10-3. The parameters defining the corresponding hadronic form factor ratios at zero momentum transfer are determined for the first time; we measure them to be rV=1.24±0.09±0.06 and r2=1.06±0.15±0.05. The first and second uncertainties are statistical and systematic, respectively. We also search for the decay D+→φe+νe. An improved upper limit B(D+→φe+νe)<1.3×10-5 is set at 90% confidence level.

Original languageEnglish (US)
Article number071101
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume92
Issue number7
DOIs
StatePublished - Oct 19 2015

Bibliographical note

Publisher Copyright:
© 2015 American Physical Society.

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