First Year of the BABAR Experiment Data Taking

TL;DR

The paper reports on the initial data collection, detector performance, and early physics analyses from the first year of the BABAR experiment at PEP-II, marking the start of its scientific program.

Contribution

It provides the first comprehensive overview of BABAR's early operational status, detector performance, and initial physics results after beginning data taking.

Findings

Successful collection of initial hadronic events

Assessment of detector performance metrics

Early physics analysis results

Abstract

The BABAR experiment at the PEP-II asymmetric B factory observed its first hadronic events on the 26th of May 1999. We present the progress made so far on the data taking, the BABAR detector performances and the physics analyses.