FOCUS Document 887-v1

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Hadronic Mass Spectrum Analysis of D+ -> K- pi+ mu+ nu Decay and Measurement of the K*0(892) Mass and Width

Document #:
FOCUS-doc-887-v1
Document type:
Publication
Submitted by:
Doris Kim
Updated by:
Doris Kim
Document Created:
19 Oct 2005, 11:24
Contents Revised:
19 Oct 2005, 11:24
Metadata Revised:
12 May 2006, 08:51
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Abstract:
We present a K pi mass spectrum analysis of the four-body semileptonic charm decay D+ -> K- pi+ mu+ nu in the range of 0.65 GeV/c^2 < m(K pi) < 1.5 GeV/c^2. We observe a non-resonant contribution of 5.30 +- 0.74 +0.99-0.96 % with respect to the total D+ -> K- pi+ mu+ nu decay. For the K*0(892) resonance, we obtain a mass of 895.41 +- 0.32 +0.35-0.43 MeV/c^2, a width of 47.79 +- 0.86 +1.32-1.06 MeV/c^2, and a Blatt-Weisskopf damping factor parameter of 3.96 +- 0.54 +1.31-0.90 GeV^{-1}. We also report 90% CL upper limits of 4% and 0.64% for the branching ratios {\Gamma (D+ -> K*0bar(1680) mu+ nu)} {\Gamma (D+ -> K- pi+ mu+ nu)} and {\Gamma (D+ -> K*0bar(1430) mu+ nu)} {\Gamma (D+ -> K- pi+ mu+ nu)}, respectively.
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Notes and Changes:
This is the final versions submitted to PLB and hep-ex
Journal References:
Published in Phys. Lett. B vol. 621 pg. 72.
Published in hep-ex/0503043.
Publication Information:
FERMILAB-PUB-05-044-E
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