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I. INTRODUCTION
II. DARK ENERGY SURVEY DATA
A. DES Y3-GOLD catalogue
B. BAO Sample
C. Photometric Redshifts
D. Angular Mask
III. SIMULATIONS
A. ICE-COLA (quasi-n-body) Mocks
B. FLASK (lognormal) Mocks
IV. ANALYSIS
A. Clustering Measurements
B. BAO Template
C. Covariance Matrix
D. Parameter Inference
E. Combining Statistics
V. TESTS ON MOCKS
VI. PRE-UNBLINDING TESTS
VII. RESULTS
A. The BAO signal
B. BAO Distance Measurements
C. Robustness Tests
VIII. COSMOLOGICAL IMPLICATIONS
IX. CONCLUSIONS
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