Measurement of angular parameters from the decay B0 → K⁎0μ+μ in proton–proton collisions at s=8TeV

The CMS collaboration

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Abstract

Angular distributions of the decay B0→K⁎0μ+μ are studied using a sample of proton–proton collisions at s=8TeV 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 P1 and 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 P1 and 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.

Original languageEnglish
Pages (from-to)517-541
Number of pages25
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume781
DOIs
Publication statusPublished - 2018 Jun 10

Keywords

  • B decays
  • CMS
  • Physics

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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