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Related Experiment Video

Updated: May 18, 2026

Analysis of SEC-SAXS data via EFA deconvolution and Scatter
10:59

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Published on: January 28, 2021

Extracting B→K* form factors from data.

Christian Hambrock1, Gudrun Hiller

  • 1Institut für Physik, Technische Universität Dortmund, D-44221 Dortmund, Germany. christian.hambrock@udo.edu

Physical Review Letters
|September 26, 2012
PubMed
Summary

We extracted ratios of B→K* form factors from B→K*μ(+)μ(-) decays. This model-independent method advances understanding of form factors for Standard Model precision tests.

Area of Science:

  • High Energy Physics
  • Particle Physics
  • Quantum Chromodynamics

Background:

  • Form factors in B decays are crucial for probing physics beyond the Standard Model.
  • Previous analyses often relied on specific theoretical models.
  • Recent experimental data offers new opportunities for model-independent studies.

Purpose of the Study:

  • To extract ratios of B→K* form factors at low hadronic recoil.
  • To perform a model-independent analysis of these form factors.
  • To improve precision tests of the Standard Model.

Main Methods:

  • Utilized recent experimental data from B→K*μ(+)μ(-) decays.
  • Employed a model-independent approach to extract form factor ratios.
  • Focused on the low hadronic recoil region.

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Last Updated: May 18, 2026

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Main Results:

  • Successfully extracted ratios of B→K* form factors.
  • Demonstrated the feasibility of a model-independent determination.
  • Provided crucial inputs for Standard Model precision tests.

Conclusions:

  • The model-independent method is robust and improvable with future data.
  • Further angular studies in semileptonic rare B decays will enhance understanding.
  • This work contributes to precise tests of the Standard Model.