Measurement of the ratio of branching fractions B(B_c⁺ → J/ψ K⁺)/B(B_c⁺ → J/ψπ⁺)

2016/07/22 by LHCb collaboration, R. Aaij, B. Adeva +763 · 2 citations
Chemistry · Mathematics · Physics and Astronomy · #Analytical Chemistry (journal) #Astrophysics #Atomic physics #Branching (polymer chemistry) #Branching fraction #Chemistry #Chromatography #Collision #Combinatorics #Crystallography #Geometry #High-Energy Particle Collisions Research #Large Hadron Collider #Luminosity #Materials science #Mathematics #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Pi #Quantum Chromodynamics and Particle Interactions #Statistics #Systematic error #hep-ex

paper · pdf · doi:10.1007/jhep09(2016)153

published as JHEP 1609 (2016) 153 · All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2016-020.html

openalex publication_date 2016/07/22 · arxiv created 2017/05/18 · arxiv updated 2017/05/19 · openalex created_date 2019/06/27 · openalex updated_date 2026/08/01

Abstract

The ratio of branching fractions R_K/π ≡ B(B_c⁺ → J/ψ K⁺)/B(B_c⁺ → J/ψπ⁺) is measured with pp collision data collected by the LHCb experiment at centre-of-mass energies of 7 TeV and 8 TeV, corresponding to an integrated luminosity of 3fb^-1. It is found to be R_K/π = 0.079±0.007±0.003, where the first uncertainty is statistical and the second is systematic. This measurement is consistent with the previous LHCb result, while the uncertainties are significantly reduced.

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