Angular analysis and branching ratio measurement of the decay B0 to K*0 mu+ mu-

Angular analysis and branching ratio measurement of the decay B0 to K*0 mu+ mu-

CMS

Collaboration

2011

14 pages

Published: Apr 9, 2013

Report number:

CMS-PAS-BPH-11-009

Experiments:

CERN-LHC-CMS

View in:

CERN Document Server

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reference search14 citations

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Abstract:

The angular distributions and the differential branching fraction of the decay

\text{B}^{0} \rightarrow \text{K}^{*0} \mu^{+} \mu^{-}

are studied using an integrated luminosity of 5.2~\fbinv of data collected with the CMS detector. The forward-backward asymmetry of the muons

A_{FB}

, the

\text{K}^{\ast 0}

longitudinal polarization fraction

F_{L}

, and the differential branching fraction

{\rm d}\mathcal{B}/{\rm d}q^{2}

, are determined as a function of the dimuon invariant mass squared. The measurements are in good agreement with the standard model.

Note:

CMS Physics Analysis Summary - preliminary results

Data
p p: interaction
angular distribution: asymmetry
polarization: longitudinal
muon: angular distribution
B0: semileptonic decay
B0: branching ratio: measured
dimuon: final state
CMS
mass spectrum

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