Measurement of the $P_1$ and $P_5'$ angular parameters of the decay $\mathrm{B}^0 \to \mathrm{K}^{*0} \mu^+ \mu^-$ in proton-proton collisions at $\sqrt{s}=8~\mathrm{TeV}$ - INSPIRE

DataBETA

Measurement of the $P_1$ and $P_5'$ angular parameters of the decay $\mathrm{B}^0 \to \mathrm{K}^{*0} \mu^+ \mu^-$ in proton-proton collisions at $\sqrt{s}=8~\mathrm{TeV}$

CMS

Collaboration

2017

16 pages

Report number:

CMS-PAS-BPH-15-008

Experiments:

CERN-LHC-CMS

View in:

CERN Document Server

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Abstract:

The angular distributions of the decay

\mathrm{B}^0 \to \mathrm{K}^{*0} \mu^ +\mu^-

are studied using data corresponding to an integrated luminosity of

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

collected with the CMS detector at the LHC in proton-proton collisions at

\sqrt{s} = 8~\mathrm{TeV}

. An angular analysis gives access to many physical observables, including

P_5'

, which is of particular interest due to measurements from the LHCb Collaboration, that exibit potential discrepancy with the standard model. Based on a sample of 1397 signal events, the

P_1

and

P_5'

angular parameters are determined as a function of the dimuon invariant mass squared. The measurement are in agreement with standard model predictions.

Note:

Preliminary results

Data
p p: scattering
p p: colliding beams
B0: semileptonic decay
B0: rare decay
muon: pair production
decay: angular distribution
CERN LHC Coll
dimuon: mass spectrum
mass spectrum: (muon+ muon-)

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