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dc.contributor.author | LHCb Collaboration |
dc.contributor.author | Adeva Andany, Bernardo |
dc.contributor.author | Borsato, Martino |
dc.contributor.author | Chobanova, Veronika |
dc.contributor.author | Cid Vidal, Xabier |
dc.contributor.author | Dosil Suárez, Álvaro |
dc.contributor.author | Fernández Prieto, Antonio |
dc.contributor.author | Gallas Torreira, Abraham Antonio |
dc.contributor.author | García Pardiñas, Julián |
dc.contributor.author | Lemos Cid, Edgar |
dc.contributor.author | Lucio Martínez, Miriam |
dc.contributor.author | Martínez Santos, Diego |
dc.contributor.author | Plo Casasus, Máximo |
dc.contributor.author | Prisciandaro, Jessica |
dc.contributor.author | Ramos Pernas, Miguel |
dc.contributor.author | Romero Vidal, Antonio |
dc.contributor.author | Saborido Silva, Juan José |
dc.contributor.author | Sanmartín Sedes, Brais |
dc.contributor.author | Santamarina Ríos, Cibrán |
dc.contributor.author | Vázquez Regueiro, Pablo |
dc.contributor.author | Vieites Díaz, María |
dc.contributor.author | Vázquez Sierra, Carlos |
dc.date.accessioned | 2020-05-28T19:28:38Z |
dc.date.available | 2020-05-28T19:28:38Z |
dc.date.issued | 2017 |
dc.identifier.citation | Aaij, R., Adeva, B., Adinolfi, M. et al. Measurement of CP violation in B0 → J/ψK 0S and B0 → ψ(2S)K0S decays. J. High Energ. Phys. 2017, 170 (2017). https://doi.org/10.1007/JHEP11(2017)170 |
dc.identifier.issn | 1029-8479 |
dc.identifier.uri | http://hdl.handle.net/10347/22658 |
dc.description.abstract | A measurement is presented of decay-time-dependent CP violation in the decays B0 → J/ψ K 0S and B0 → ψ(2S)K 0S, where the J/ψ is reconstructed from two electrons and the ψ(2S) from two muons. The analysis uses a sample of pp collision data recorded with the LHCb experiment at centre-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb−1. The CP -violation observables are measured to be C(B0→J/ψK0S)=0.12±0.07±0.02,S(B0→J/ψK0S)=0.83±0.08±0.01,C(B0→ψ(2S)K0S)=−0.05±0.10±0.01,S(B0→ψ(2S)K0S)=0.84±0.10±0.01, where C describes CP violation in the direct decay, and S describes CP violation in the interference between the amplitudes for the direct decay and for the decay after B0−B¯0 oscillation. The first uncertainties are statistical and the second are systematic. The two sets of results are compatible with the previous LHCb measurement using B0 → J/ψ K 0S decays, where the J/ψ meson was reconstructed from two muons. The averages of all three sets of LHCb results are C(B0→[cc¯]K0S)=−0.017±0.029,S(B0→[cc¯]K0S)=0.760±0.034, under the assumption that higher-order contributions to the decay amplitudes are negligible. The uncertainties include statistical and systematic contributions. |
dc.language.iso | eng |
dc.publisher | Springer |
dc.rights | © CERN, for the bene t of the LHCb Collaboration. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ |
dc.subject | B physics |
dc.subject | CKM angle beta |
dc.subject | CP violation |
dc.subject | Flavor physics |
dc.subject | Hadron-Hadron scattering (experiments) |
dc.title | Measurement of CP violation in B0 → J/ψK 0S and B0 → ψ(2S)K0S decays |
dc.type | journal article |
dc.identifier.doi | 10.1007/JHEP11(2017)170 |
dc.relation.publisherversion | https://doi.org/10.1007/JHEP11(2017)170 |
dc.type.hasVersion | VoR |
dc.rights.accessRights | open access |
dc.contributor.affiliation | Universidade de Santiago de Compostela. Departamento de Física de Partículas |
dc.contributor.affiliation | Universidade de Santiago de Compostela. Instituto Galego de Física de Altas Enerxías (IGFAE) |
dc.description.peerreviewed | SI |
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© CERN, for the bene t of the LHCb Collaboration. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
© CERN, for the bene t of the LHCb Collaboration. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.