"Measurement of CP Violation in B Meson Decay"<br>
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I will discuss the phenomenon of asymmetries under the combined<br>
transformations of charge conjugation and parity (CP), and explain the<br>
consequences of these asymmetries in particle physics and cosmology.<br>
I will then discuss the importance of measuring violations of CP<br>
symmetry in the B meson system, and describe the recent measurement of<br>
the CP-violation parameter sin2beta with the BaBar detector at SLAC,<br>
with a focus on how events are selected for the measurement.<br>