2026-04-19T11:21:21Zhttps://recercat.cat/oai/requestoai:recercat.cat:2445/1406422025-12-05T16:48:48Zcom_2072_1057col_2072_478823col_2072_478917
RECERCAT
author
Graugés Pous, Eugeni
author
BABAR Collaboration
2019-09-20T10:31:28Z2019-09-20T10:31:28Z2005-10-042019-09-20T10:31:28Z
We present updated measurements of the C P -violating parameters S π π and C π π in B 0 → π + π − decays. Using a sample of 227 × 10 6 Υ ( 4 S ) → B ¯¯¯ B decays collected with the BABAR detector at the PEP-II asymmetric-energy e + e − collider at SLAC, we observe 467 ± 33 signal decays and measure S π π = − 0.30 ± 0.17 ( stat ) ± 0.03 ( syst ) and C π π = − 0.09 ± 0.15 ( stat ) ± 0.04 ( syst ) .
(c) American Physical Society, 2005 info:eu-repo/semantics/openAccess
Física de partícules
Experiments
Particle physics
Experiments
Improved Measurements of CP-Violating Asymmetry Amplitudes in B0→π+π− Decays
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion