B0(s) → μ+μ- combination at the LHC. (May 2015)

• Record Type: Journal Article
• Authors: Schlupp, Maximilian
• Is Part Of: Journal of physics. Number 623(2015)
• Publication Date: 2015-05
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/623/1/012025
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: The combined analysis of the B 0 s and B 0 meson decays into two muons based on the full CMS and LHCb datasets is presented. The simultaneous fit to the datasets yields the most precise measurement of the branching fractions to date with a total uncertainty of about 23% for the B 0 s meson and 38% for the B 0 decay into two muons. The measured branching fractions are compatible with the Standard Model predictions within 1.2σ and 2.2σ for the B 0 s and B 0 signals, respectively. The statistical significance for the B 0 s signal is 6.2σ and 3.2σ for the B 0 signal. This results in the first observation of B 0 s meson decays into two muons and the first evidence for the B 0 sister decay.