RT Journal Article
T1 Observation of the Λ0b→Λφdecay
A1 LHCb Collaboration, 
A1 Adeva Andany, Bernardo
A1 Borsato, Martino
A1 Dosil Suárez, Álvaro
A1 Fernández Albor, Víctor Manuel
A1 Gallas Torreira, Abraham Antonio
A1 García Pardiñas, Julián
A1 Hernando Morata, José Ángel
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 Vázquez Sierra, Carlos
A1 Vieites Díaz, María
AB The Λ0b→Λφdecay is observed using data corresponding to an integrated luminosity of 3.0fb−1recorded by the LHCbexperiment. The decay proceeds at leading order via a b →sssloop transition and is therefore sensitive to the possible presence of particles beyond the Standard Model. A first observation is reported with a significance of 5.9standard deviations. The value of the branching fraction is measured to be (5.18 ±1.04 ±0.35+0.67−0.62) ×10−6, where the first uncertainty is statistical, the second is systematic, and the third is related to external inputs. Triple-product asymmetries are measured to be consistent with zero.
PB Elsevier
SN 0370-2693
YR 2016
FD 2016
LK http://hdl.handle.net/10347/22432
UL http://hdl.handle.net/10347/22432
LA eng
NO Cheung, S. F., Evans, T., Gandini, P., Gruberg Cazon, B. R., Hadavizadeh, T., Harnew, N., ... & Malde, S. S. (2016). Observation of the Λ0b→ Λφ decay. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 759, 282-292
DS Minerva
RD 23 abr 2026