Study of D+ -> K-pi(+)e(+)nu(e)
2016 (English)In: PHYSICAL REVIEW D, ISSN 2470-0010, Vol. 94, no 3, 032001Article in journal (Refereed) Published
We present an analysis of the decay D+ -> K-pi(+)e(+)nu(e) based on data collected by the BESIII experiment at the psi(3770) resonance. Using a nearly background-free sample of 18262 events, we measure the branching fraction B(D+ -> K-pi+e+nu e) = (3.77 +/- 0.03 +/- 0.08)%. For 0.8 < m(K pi) < 1.0 GeV/c(2), the partial branching fraction is B(D+ -> K-pi+e+nu e)([0.8,1.0]) = (3.39 +/- 0.03 +/- 0.08)%. A partial wave analysis shows that the dominant (K) over bar* (892)degrees component is accompanied by an S-wave contribution accounting for (6.05 +/- 0.22 +/- 0.18)% of the total rate and that other components are negligible. The parameters of the (K) over bar* (892)degrees resonance and of the form factors based on the spectroscopic pole dominance predictions are also measured. We also present a measurement of the (K) over bar* (892)degrees helicity basis form factors in a model-independent way.
Place, publisher, year, edition, pages
2016. Vol. 94, no 3, 032001
IdentifiersURN: urn:nbn:se:uu:diva-303058DOI: 10.1103/PhysRevD.94.032001ISI: 000380961000002OAI: oai:DiVA.org:uu-303058DiVA: diva2:970952
FunderSwedish Research Council