Measurement of the polarization amplitudes in B0 -> J/psi K*(892)0 decays - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physical Review D Year : 2013

Measurement of the polarization amplitudes in B0 -> J/psi K*(892)0 decays

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

Abstract

An analysis of the decay B0 -> J/psi K*(892)0 is presented using data, corresponding to an integrated luminosity of 1.0fb^-1, collected in pp collisions at a centre-of-mass energy of 7TeV with the LHCb detector. The polarisation amplitudes and the corresponding phases are measured to be |A_{\parallel}|^2 = 0.227 +- 0.004 (stat.) +- 0.011 (syst.), |A_{\perp}|^2 = 0.201 +- 0.004 (stat.) +- 0.008 (syst.), \delta_{\parallel} [rad] = -2.94 +- 0.02 (stat.) +- 0.03 (syst.), \delta_{\perp} [rad] = 2.94 +- 0.02 (stat.) +- 0.02 (syst.). Comparing B0 -> J/psi K*(892)0 and \bar{B}0 -> J/psi \bar{K}*(892)0 decays, no evidence for direct CP violation is found.

Dates and versions

in2p3-00844565 , version 1 (15-07-2013)

Identifiers

Cite

R. Aaij, Y. Amhis, S. Barsuk, O. Callot, J. He, et al.. Measurement of the polarization amplitudes in B0 -> J/psi K*(892)0 decays. Physical Review D, 2013, 88, pp.052002. ⟨10.1103/PhysRevD.88.052002⟩. ⟨in2p3-00844565⟩
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