Measurement of CP Violation in B[superscript 0] → J / ψ K[superscript 0][subscript S] Decays
Measurements are presented of the CP violation observables S and C in the decays of B[superscript 0] and [bar over B][superscript 0] mesons to the J/ψK[superscript 0][subscript S] final state. The data sample corresponds to an integrated luminosity of 3.0fb[superscript -1] collected with the LHCb ex...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
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American Physical Society (APS)
2018
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| Online Access: | http://hdl.handle.net/1721.1/115946 https://orcid.org/0000-0002-4670-1334 https://orcid.org/0000-0001-5534-1732 https://orcid.org/0000-0001-8285-3346 |
| Summary: | Measurements are presented of the CP violation observables S and C in the decays of B[superscript 0] and [bar over B][superscript 0] mesons to the J/ψK[superscript 0][subscript S] final state. The data sample corresponds to an integrated luminosity of 3.0fb[superscript -1] collected with the LHCb experiment in proton-proton collisions at center-of-mass energies of 7 and 8 TeV, and contains a total of 41560 selected B[superscript 0] and [bar over B][superscript 0] decays. The analysis of the time evolution of these decays yields S = 0.731 ± 0.035(stat) ± 0.020(syst) and C = -0.038 ± 0.032(stat)± 0.005(syst). In the standard model, S equals sin(2β) to a good level of precision. The values are consistent with the current world averages and with the standard model expectations. |
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