Abstract
We present a Kπ mass spectrum analysis of the four-body semileptonic charm decay D+→K-π+μ+ν in the range of 0.65 GeV/c2<mKπ<1.5 GeV/c2. We observe a non-resonant contribution of 5.30±0.74-0.96+0.99% with respect to the total D+→K-π+μ+ν decay. For the K*(892)0 resonance, we obtain a mass of 895.41±0.32-0.43+0.35 MeV/c2, a width of 47.79±0.86-1.06+1.32 MeV/c2, and a Blatt-Weisskopf damping factor parameter of 3.96±0.54-0.90+1.31 GeV-1. We also report 90% CL upper limits of 4% and 0.64% for the branching ratios Γ(D+→K̄*(1680)0μ+ν)Γ(D+→K-π+μ+ν) and Γ(D+→K̄0*(1430)0μ+ν) Γ(D+→K-π+μ+ν), respectively.
Original language | English (US) |
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Pages (from-to) | 72-80 |
Number of pages | 9 |
Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
Volume | 621 |
Issue number | 1-2 |
DOIs | |
State | Published - Aug 11 2005 |
Externally published | Yes |
ASJC Scopus subject areas
- Nuclear and High Energy Physics