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Measurement of the form-factor ratios for D^+ -> \overline K^{*0}e^+\nu_e

High Energy Physics - Phenomenology 2016-09-06 v1
Authors: Fermilab E791 Collaboration , E. M. Aitala
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Abstract

We present a measurement of the form-factor ratios r_V=V(0)/A_1(0) and r_2=A_2(0)/A_1(0) for the decay D^+ -> \overline K^{*0} e^+ \nu_e. The measurement is based on a signal of approximately 3000 D+−>K‾∗0e+νe,K‾∗0−>K−π+D^+ -> \overline K^{*0} e^+ \nu_e, \overline K^{*0} -> K^-\pi^+ decays reconstructed in data from charm hadroproduction experiment E791 at Fermilab. The results are r_V = 1.84 +- 0.11 +- 0.08 and r_2 = 0.71 +- 0.08 +- 0.09.

Keywords

形式因子比 D^+ 衰变 形式因子 衰变常数

Cite

@article{arxiv.hep-ph/9710216,
  title  = {Measurement of the form-factor ratios for D^+ -> \overline K^{*0}e^+\nu_e},
  author = {Fermilab E791 Collaboration and E. M. Aitala},
  journal= {arXiv preprint arXiv:hep-ph/9710216},
  year   = {2016}
}

Comments

9 pages, 2 figures

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