Angular analysis of the decay B⁰ → K*⁰ μ⁺ μ⁻ from pp collisions at √s = 8 TeV
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1-s2.0-S0370269315009685-main.pdf
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Author(s)
CMS Collaboration
Apyan, Aram
Barbieri, Richard Alexander
Baty, Austin Alan
Bierwagen, Katharina
Brandt, Stephanie Akemi
Busza, Wit
Cali, Ivan Amos
Demiragli, Zeynep
Di Matteo, Leonardo
Date Issued
December 2015
Journal
Physics Letters B
Publisher
Elsevier
Citation
Khachatryan, V. et al. “Angular analysis of the decay B⁰ → K*⁰ μ⁺ μ⁻ from pp collisions at √s = 8 TeV.” Physics Letters B 753 (February 2016): 424–448 © 2015 CERN for the benefit of the CMS Collaboration
Version
Final published version
Abstract
The angular distributions and the differential branching fraction of the decay B⁰ → K*(892)⁰ μ⁺ μ⁻ are studied using data corresponding to an integrated luminosity of 20.5 fb⁻¹ collected with the CMS detector at the LHC in pp collisions at s=8 TeV. From 1430 signal decays, the forward–backward asymmetry of the muons, the K*(892)⁰ longitudinal polarization fraction, and the differential branching fraction are determined as a function of the dimuon invariant mass squared. The measurements are among the most precise to date and are in good agreement with standard model predictions.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International License
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DOI of Published Version
https://doi.org/10.1016/J.PHYSLETB.2015.12.020
