Measurement of angular parameters from the decay B⁰→ K*⁰ μ⁺μ⁻ in proton–proton collisions at √s = 8 TeV
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Author(s)
Abercrombie, Daniel Robert
Allen, Brandon Leigh
Azzolini, Virginia
Barbieri, Richard Alexander
Baty, Austin Alan
Bi, Ran
Brandt, Stephanie Akemi
Busza, Wit
Cali, Ivan Amos
D'Alfonso, Mariarosaria
Date Issued
June 2018
Journal
Physics Letters B
Publisher
Elsevier BV
Citation
Sirunyan, A. M. et al. “Measurement of angular parameters from the decay B⁰→ K*⁰ μ⁺μ⁻ in proton–proton collisions at √s = 8 TeV.” Physics Letters B 781 (June 2018): 517–541. © 2018 The Author(s)
Version
Final published version
Abstract
Angular distributions of the decay B⁰→ K*⁰ μ⁺μ⁻ are studied using a sample of proton–proton collisions at √s = 8 TeV collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 20.5fb⁻¹. An angular analysis is performed to determine the P1and P5′parameters, where the P5′parameter is of particular interest because of recent measurements that indicate a potential discrepancy with the standard model predictions. Based on a sample of 1397 signal events, the P1and P5′parameters are determined as a function of the dimuon invariant mass squared. The measurements are in agreement with predictions based on the standard model.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Massachusetts Institute of Technology. Department of Mechanical Engineering
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DOI of Published Version
https://doi.org/10.1016/J.PHYSLETB.2018.04.030
