An angular analysis of Λ0 b → J /ψΛ decays is performed using a data sample corresponding to 1.0fb-1 collected in pp collisions at √s = 7 TeV with the LHCb detector at the LHC. A parity violating asymmetry parameter characterising the Λ0 b → J /ψΛ decay of 0.05 ± 0.17 ± 0.07 and a Λ0 b transverse production polarisation of 0.06 ± 0.07 ± 0.02 are measured, where the rst uncertainty is statistical and the second systematic. © 2013 CERN. Published by Elsevier B.V.
Measurements of the Λ0 b → J /ψΛ decay amplitudes and the Λ0 b polarisation in pp collisions at √s = 7TeV
FONTANELLI, FLAVIO;PATRIGNANI, CLAUDIA;PETROLINI, ALESSANDRO;
2013-01-01
Abstract
An angular analysis of Λ0 b → J /ψΛ decays is performed using a data sample corresponding to 1.0fb-1 collected in pp collisions at √s = 7 TeV with the LHCb detector at the LHC. A parity violating asymmetry parameter characterising the Λ0 b → J /ψΛ decay of 0.05 ± 0.17 ± 0.07 and a Λ0 b transverse production polarisation of 0.06 ± 0.07 ± 0.02 are measured, where the rst uncertainty is statistical and the second systematic. © 2013 CERN. Published by Elsevier B.V.
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