Searching for New Physics through Charm at CDF
Angelo Di Canto (for the CDF Collaboration)
TL;DR
This paper reports a highly precise search for CP violation in D0 meson decays at CDF, aiming to find signs of physics beyond the Standard Model by analyzing large datasets of charm decays.
Contribution
It presents the most precise measurements of CP asymmetry in D0 decays, utilizing novel techniques to suppress systematic uncertainties in a large collider dataset.
Findings
No evidence of CP violation was observed.
Results set new constraints on new physics models.
Methodology improves precision in charm CP violation measurements.
Abstract
We report a search for non-Standard Model physics through the measurement of CP-violating asymmetry in the Cabibbo suppressed D0->pi+pi- and D0->K+K- decays reconstructed in about 5.94/fb of CDF data. We use the strong D*+->D0pi+ decay ("D* tag") to identify the flavor of the charmed meson at production time and exploit CP-conserving strong c-cbar pair-production in p-pbar collisions. Large samples of Cabibbo favored D0->K-pi+ decays with and without D* tag are used to highly suppress systematic uncertainties due to detector effects. The results are the world's most precise measurements to date.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · Medical Imaging Techniques and Applications