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Contribution Oral contribution

C.U. - Unidad de Seminarios Ignacio Chávez

Measurment of the Lambda_b polarization in the Lambda_b -> Lambda J/psi decay

Speakers

  • Mr. Rogelio REYES ALMANZA

Primary authors

Co-authors

Abstract

Predictions based on heavy-quark effective theory indicate for Lambda_b baryons a large fraction of the transverse b-quark polarization to be retained after hadronization. We performed an angular analysis in the Lambda_b-> Lambda(p+pi-) J/psi(mu+mu-) decay. We present a measurement of the Lambda_b polarization using data from pp collisions at √s = 7 TeV and 8 TeV collected with the CMS detector.