Measurement of the hadronic form-factor in $D^0 \to K^{-} e^{+} \nu_{e}$ 1 - INSPIRE

DataBETA

Measurement of the hadronic form-factor in $D^0 \to K^{-} e^{+} \nu_{e}$ 1

BaBar

Collaboration

Apr, 2007

21 pages

Part of Proceedings, 42nd Rencontres de Moriond on QCD and High Energy Hadronic Interactions : La Thuile, Italy, March 17-24, 2007

Published in:

Phys.Rev.D 76 (2007) 052005

Contribution to:

42nd Rencontres de Moriond on QCD and High Energy Hadronic Interactions

Published: 2007

e-Print:

0704.0020 [hep-ex]

DOI:

10.1103/PhysRevD.76.052005

PDG:

{{\mathit D}^{0}}

\rightarrow

{{\mathit K}^{-}}{{\mathit \pi}^{+}}

Report number:

SLAC-PUB-12417,
BABAR-PUB-07-015

Experiments:

SLAC-PEP2-BABAR

View in:

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Abstract: (arXiv)

The shape of the hadronic form factor f+(q2) in the decay D0 --> K- e+ nue has been measured in a model independent analysis and compared with theoretical calculations. We use 75 fb(-1) of data recorded by the BABAR detector at the PEPII electron-positron collider. The corresponding decay branching fraction, relative to the decay D0 --> K- pi+, has also been measured to be RD = BR(D0 --> K- e+ nue)/BR(D0 --> K- pi+) = 0.927 +/- 0.007 +/- 0.012. From these results, and using the present world average value for BR(D0 --> K- pi+), the normalization of the form factor at q2=0 is determined to be f+(0)=0.727 +/- 0.007 +/- 0.005 +/- 0.007 where the uncertainties are statistical, systematic, and from external inputs, respectively.

Note:

21 pages, 13 postscript figures, submitted to Phys. Rev. D, contributed to 42nd Rencontres de Moriond: QCD and Hadronic Interactions •
Not published in the proceedings

11.30.Er
12.15.Hh
13.25.Hw
talk: La Thuile 2007/03/17
electron positron: colliding beams
electron positron: annihilation
quark: charm
quark: pair production
D*(2010): hadronic decay
D0: semileptonic decay

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