Measurement of Lambda b polarization and the angular parameters of the decay Lambda b to J/psi Lambda - INSPIRE

DataBETA

Measurement of Lambda b polarization and the angular parameters of the decay Lambda b to J/psi Lambda

CMS

Collaboration

2016

1 page

Report number:

CMS-PAS-BPH-15-002

Experiments:

CERN-LHC-CMS

View in:

CERN Document Server

reference search6 citations

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Abstract:

We present a measurement of the

\Lambda_{b}

polarization based on an angular analysis of the decay

\Lambda_{b}\to J/\psi(\mu^{+}\mu^{-}) \Lambda^{0}(p\pi^{-})

, using data from pp collisions at

\sqrt{s}

= 7 TeV and 8 TeV collected with the CMS detector. A transverse

\Lambda_{b}

polarization of

0.00

\pm0.06(stat)

\pm 0.02(syst)

is measured. % This is an example of a \textit{CMS Note} written in \LaTeX % using the \emph{cms-tdr} document class and processed using the % same \texttt{tdr} perl script used in generating the CMS Physics TDRs. % Instructions for producing CMS Notes and Internal Notes are given.

Note:

Preliminary results

Data
p p: colliding beams
Lambda/b0: polarization
Lambda/b0: hadronic decay
p p: scattering
CMS
J/psi(3100): leptonic decay
muon: pair production
Lambda: hadronic decay
decay: angular distribution

References(22)

Figures(19)

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