Measurement of hadronic cross-sections with the BaBar detector

2019/06/22 by Ebert, Marcus
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex)

paper · doi:10.48550/arxiv.1906.09386

Abstract

A program of measuring the light hadrons production in exclusive e⁺e^- to hadrons processes is in place at BaBar with the aim to improve the calculation of the hadronic contribution to the muon g-2. We present the most recent results obtained by using the full data set of about 514 fb^-1 collected by the BaBar experiment at the PEP-II e⁺e^- collider at a center-of-mass energy of about 10.6 GeV. In particular, we report the results on the channels e⁺e^-→ π⁺ π^- 3π⁰, e⁺e^-→ π⁺π^- 2π⁰η, and its resonant sub-states. These final states are studied in a wide mass range,from threshold production up to about 4 GeV/c². In addition to the cross-sections, twelve J/ψ and ψ(2S) branching fractions were measured with ten of them be a first-time measurement.

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