Angular analysis of the decay B0→K*0μ+μ- from pp collisions at s=8 TeV

V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam, E. Asilar, T. Bergauer, J. Brandstetter, E. Brondolin, M. Dragicevic, J. Erö, M. Flechl, M. Friedl, R. Frühwirth, V. M. Ghete, C. Hartl, N. Hörmann, J. Hrubec, M. Jeitler, V. Knünz, A. KönigM. Krammer, I. Krätschmer, D. Liko, T. Matsushita, I. Mikulec, D. Rabady, B. Rahbaran, H. Rohringer, J. Schieck, R. Schöfbeck, J. Strauss, W. Treberer-Treberspurg, W. Waltenberger, C. E. Wulz, V. Mossolov, N. Shumeiko, J. Suarez Gonzalez, S. Alderweireldt, T. Cornelis, E. A. De Wolf, X. Janssen, A. Knutsson, J. Lauwers, S. Luyckx, S. Ochesanu, R. Rougny, M. Van De Klundert, H. Van Haevermaet, P. Van Mechelen, A. Radi, CMS Collaboration

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Abstract

The angular distributions and the differential branching fraction of the decay B0→K*(892)0μ+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.

Original languageEnglish
Pages (from-to)424-448
Number of pages25
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume753
DOIs
Publication statusPublished - Feb 10 2016

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Keywords

  • B0 decays
  • CMS
  • Physics

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Khachatryan, V., Sirunyan, A. M., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., Brandstetter, J., Brondolin, E., Dragicevic, M., Erö, J., Flechl, M., Friedl, M., Frühwirth, R., Ghete, V. M., Hartl, C., Hörmann, N., Hrubec, J., Jeitler, M., Knünz, V., ... CMS Collaboration (2016). Angular analysis of the decay B0→K*0μ+μ- from pp collisions at s=8 TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 753, 424-448. https://doi.org/10.1016/j.physletb.2015.12.020