TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Garcia Martin, L. M.
AU  - Henry, L.
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Remon Alepuz, C.
AU  - Ruiz Vidal, J.
AU  - Sanchez Mayordomo, C.
PY  - 2018
DA  - 2018//
TI  - Observation of the decay Lambda(0)(b) -> psi(2S)p pi(-)
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 131
EP  - 18pp
VL  - 08
IS  - 8
PB  - Springer
KW  - B physics
KW  - Flavor physics
KW  - Hadron-Hadron scattering (experiments)
KW  - Spectroscopy
AB  - The Cabibbo-suppressed decay Lambda(0)(b) -> psi(2S)p pi(-) is observed for the fi rst 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 13TeV, respectively. The psi(2S) mesons are reconstructed in the mu(+)mu(-) fi nal state. The branching fraction with respect to that of the Lambda(0)(b) -> psi(2S)pK(-) decay mode is measured to be B (Lambda(0)(b) -> psi(2S)p pi(-))/B (Lambda(0)(b) -> psi(2S)pK(-)) = (11.44 +/- 1.3 +/- 0.2)%, where the fi rst uncertainty is statistical and the second is systematic. The psi(2S) p and psi(2S)pi(-) mass spectra are investigated and no evidence for exotic resonances is found.
SN  - 1029-8479
UR  - http://arxiv.org/abs/1806.08084
UR  - https://doi.org/10.1007/JHEP08(2018)131
DO  - 10.1007/JHEP08(2018)131
LA  - English
N1  - WOS:000442698800001
ID  - LHCbCollaborationAaij_etal2018
ER  -