RT Journal Article
T1 Observation of the decay Λ0b → pK − μ + μ − and a search for CP violation
A1 LHCb Collaboration, 
A1 Adeva Andany, Bernardo
A1 Borsato, Martino
A1 Chobanova, Veronika
A1 Cid Vidal, Xabier
A1 Dosil Suárez, Álvaro
A1 Fernández Prieto, Antonio
A1 Gallas Torreira, Abraham Antonio
A1 García Pardiñas, Julián
A1 Lemos Cid, Edgar
A1 Lucio Martínez, Miriam
A1 Martínez Santos, Diego
A1 Plo Casasus, Máximo
A1 Prisciandaro, Jessica
A1 Ramos Pernas, Miguel
A1 Romero Vidal, Antonio
A1 Saborido Silva, Juan José
A1 Sanmartín Sedes, Brais
A1 Santamarina Ríos, Cibrán
A1 Vázquez Regueiro, Pablo
A1 Vieites Díaz, María
A1 Vázquez Sierra, Carlos
K1 B physics
K1 CP violation
K1 FCNC Interaction
K1 Hadron-Hadron scattering (experiments)
AB A search for CP violation in the decay Λ0b → pK − μ + μ − is presented. This decay is mediated by flavour-changing neutral-current transitions in the Standard Model and is potentially sensitive to new sources of CP violation. The study is based on a data sample of proton-proton collisions recorded with the LHCb experiment, corresponding to an integrated luminosity of 3 fb−1. The Λ0b → pK − μ + μ − decay is observed for the first time, and two observables that are sensitive to different manifestations of CP violation are measured, ΔACP≡ACP(Λ0b→pK−μ+μ−)−ACP(Λ0b→pK−J/ψ) and a aTˆ-oddCP, where the latter is based on asymmetries in the angle between the μ + μ − and pK − decay planes.
PB Springer
SN 1029-8479
YR 2017
FD 2017
LK http://hdl.handle.net/10347/22668
UL http://hdl.handle.net/10347/22668
LA eng
NO Aaij, R., Adeva, B., Adinolfi, M. et al. Observation of the decay Λ0b → pK − μ + μ − and a search for CP violation. J. High Energ. Phys. 2017, 108 (2017). https://doi.org/10.1007/JHEP06(2017)108
DS Minerva
RD 24 abr 2026