A Non-parametric Approach to the D+ to K*0bar mu+ nu Form Factors

FOCUS Collaboration

doi:10.1016/j.physletb.2005.12.003

paper

A Non-parametric Approach to the D+ to K*0bar mu+ nu Form Factors

arXiv:hep-ex/0509027 · doi:10.1016/j.physletb.2005.12.003

Abstract

Using a large sample of D+ -> K- pi+ mu+ nu decays collected by the FOCUS photoproduction experiment at Fermilab, we present the first measurements of the helicity basis form factors free from the assumption of spectroscopic pole dominance. We also present the first information on the form factor that controls the s-wave interference discussed in a previous paper by the FOCUS collaboration. We find reasonable agreement with the usual assumption of spectroscopic pole dominance and measured form factor ratios.

14 pages, 5 figures, and 2 tables. We updated the previous version by changing some words, removing one plot, and adding two tables. These changes are mostly stylistic