Measurement of the polarization amplitudes in B[superscript 0] → J/ψK[superscript *](892)[superscript 0] decays
An analysis of the decay B[superscript 0] → J/ψK[superscript *](892)[superscript 0] is presented using data, corresponding to an integrated luminosity of 1.0 fb[superscript −1], collected in pp collisions at a center-of-mass energy of 7 TeV with the LHCb detector. The polarization amplitudes and th...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2014
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| Online Access: | http://hdl.handle.net/1721.1/84655 https://orcid.org/0000-0001-8285-3346 |
| Summary: | An analysis of the decay B[superscript 0] → J/ψK[superscript *](892)[superscript 0] is presented using data, corresponding to an integrated luminosity of 1.0 fb[superscript −1], collected in pp collisions at a center-of-mass energy of 7 TeV with the LHCb detector. The polarization amplitudes and the corresponding phases are measured to be |A[subscript ∥]|[superscript 2] = 0.227 ± 0.004 (stat) ± 0.011 (syst), |A[subscript ⊥]|[superscript 2] = 0.201 ± 0.004 (stat) ± 0.008 (syst), δ[subscript ∥][rad] = −2.94 ± 0.02 (stat) ± 0.03 (syst), and δ[subscript ⊥][rad] = 2.94 ± 0.02 (stat) ± 0.02 (syst). Comparing B[superscript 0] → J/ψK[superscript *](892)[superscript 0] and [¯ over B][superscript 0] → J/ψ[¯ over K][ superscript *](892)[superscript 0] decays, no evidence for direct CP violation is found. |
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