Measurement of angular observables in the decay B+ to K+ mu+ mu- from proton-proton collisions at sqrt[s]=8TeV

Measurement of angular observables in the decay B+ to K+ mu+ mu- from proton-proton collisions at sqrt[s]=8TeV

CMS

Collaboration

2018

Report number:

CMS-PAS-BPH-15-001

Experiments:

CERN-LHC-CMS

View in:

CERN Document Server

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Abstract:

to

mathrm{K}^{+}

mu^+\mu^-

is studied in pp collisions at the center-of-mass energy of

8~\mathrm{TeV}

. The analysis is based on data collected by the CMS detector at the LHC, corresponding to an integrated luminosity of

20.5~\mathrm{fb}^{-1}

. The forward-backward asymmetry

A_{FB}

of the dimuon system and the contribution

F_{H}

from the pseudo-scalar, scalar, and tensor amplitudes to the decay width are measured with respect to the squared dimuon mass. The measurements are consistent with the standard model expectations.

The angular distribution of the flavor-changing neutral current decay $\mathrm{B}^{+}

Note:

Preliminary results

Data
p p: colliding beams
neutral current: flavor changing
B+: semileptonic decay
p p: scattering
muon: pair production
angular distribution
B+: width
dimuon: mass spectrum
mass spectrum: (muon+ muon-)

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