Measurement of gamma and 2 beta + gamma
Justin Albert (from the BABAR Collaboration)
TL;DR
This paper presents initial measurements of the angles gamma and 2 beta + gamma of the Unitarity Triangle, aiming to test Standard Model predictions through direct measurement techniques and their current constraints.
Contribution
It provides the first direct measurements of gamma and 2 beta + gamma, comparing them with indirect CKM-based estimates to evaluate Standard Model consistency.
Findings
Initial measurements of gamma and 2 beta + gamma angles.
Comparison with indirect CKM constraints.
Assessment of measurement techniques' status.
Abstract
We report on the initial measurements of the angle gamma and the sum of angles 2 beta + gamma of the Unitarity Triangle. When compared with indirect information on the value of gamma from other measurements of CKM parameters, the measurement of these angles will provide a precise test of Standard Model predictions, as statistics increase. There are several methods for directly measuring gamma and 2 beta + gamma. We report on the status of each of these techniques, and the resulting constraints on the values of these angles.
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Taxonomy
TopicsNuclear Physics and Applications · Radiation Detection and Scintillator Technologies · Radioactive Decay and Measurement Techniques