Measurements of the Lambda_b0 -> J/psi Lambda decay amplitudes and the Lambda_b0 polarisation in pp collisions at sqrt(s) = 7 TeV - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physics Letters B Year : 2013

Measurements of the Lambda_b0 -> J/psi Lambda decay amplitudes and the Lambda_b0 polarisation in pp collisions at sqrt(s) = 7 TeV

R. Aaij
  • Function : Author
J. He
J. Cogan
O. Leroy
J. Serrano

Abstract

An angular analysis of Lambda_b0 -> J/psi Lambda decays is performed using a data sample corresponding to 1.0 fb^{-1} collected in pp collisions at sqrt(s) = 7 TeV with the LHCb detector at the LHC. A parity violating asymmetry characterising the Lambda_b0 -> J/psi Lambda decay of -0.04 +/- 0.17 +/- 0.07 and a Lambda_b0 transverse production polarisation of 0.05 +/- 0.07 +/- 0.02 are measured, where the first uncertainty is statistical and the second systematic.

Dates and versions

in2p3-00794266 , version 1 (25-02-2013)

Identifiers

Cite

R. Aaij, Y. Amhis, S. Barsuk, O. Callot, J. He, et al.. Measurements of the Lambda_b0 -> J/psi Lambda decay amplitudes and the Lambda_b0 polarisation in pp collisions at sqrt(s) = 7 TeV. Physics Letters B, 2013, 724, pp.27-35. ⟨10.1016/j.physletb.2013.05.041⟩. ⟨in2p3-00794266⟩
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