Measurement of the q2 dependence of the Hadronic Form Factor in D0 --> K- e+ nu_e decays

Details Measurement of the q2 dependence of the Hadronic Form Factor in D0 --> K- e+ nu_e decays Measurement of the q2 dependence of the Hadronic Form Factor in D0 --> K- e+ nu_e decays

2006-07-27

arxiv.org/abs/hep-ex/0607077v1

Phys.Rev.D76:052005,2007

Physics

High Energy Physics

High Energy Physics - Experiment

23 pages, 7 postscript figues, submitted to ICHEP2006

Scientific paper

10.1103/PhysRevD.76.052005

We present a preliminary measurement of the q2 dependence of the D0 --> K- e+ nu_e decay rate. This rate is proportional to the hadronic form factor squared, specified by a single parameter. This is either the mass in the simple pole ansatz m_pole = (1.854 +- 0.016 +- 0.020) GeV/c2 or the scale in the modified pole ansatz alpha_pole = 0.43 +- 0.03 +- 0.04. The first error refers to the statistical, the second to the systematic uncertainty.

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