RT Journal Article
T1 Observation of the decay Λ 0b → ψ(2S)pπ−
A1 LHCb Collaboration, 
A1 Alves Junior, Antonio Augusto
A1 Boente García, Óscar
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 Plana, Beatriz
A1 Lucio Martínez, Miriam
A1 Martínez Santos, Diego
A1 Prisciandaro, James J.
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
K1 B physics
K1 Flavor physics
K1 Hadron-Hadron scattering (experiments)
K1 Spectroscopy
AB The Cabibbo-suppressed decay Λ 0b → ψ(2S)pπ− is observed for the first time using a data sample collected by the LHCb experiment in proton-proton collisions corresponding to 1.0, 2.0 and 1.9 fb−1 of integrated luminosity at centre-of-mass energies of 7, 8 and 13 TeV, respectively. The ψ(2S) mesons are reconstructed in the μ+μ− final state. The branching fraction with respect to that of the Λ 0b → ψ(2S)pK− decay mode is measured to beB(Λ0b→ψ(2S)pπ−)B(Λ0b→ψ(2S)pK−)=(11.4±1.3±0.2)%,where the first uncertainty is statistical and the second is systematic. The ψ(2S)p and ψ(2S)π− mass spectra are investigated and no evidence for exotic resonances is found.
PB Springer
SN 1029-8479
YR 2018
FD 2018
LK http://hdl.handle.net/10347/22215
UL http://hdl.handle.net/10347/22215
LA eng
NO Aaij, R., Adeva, B., Adinolfi, M. et al. Observation of the decay Λ 0b → ψ(2S)pπ−. J. High Energ. Phys. 2018, 131 (2018). https://doi.org/10.1007/JHEP08(2018)131
DS Minerva
RD 25 abr 2026