TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Ruiz Valls, P.
AU  - Sanchez Mayordomo, C.
PY  - 2016
DA  - 2016//
TI  - Model-Independent Evidence for J/psi p Contributions to Lambda(0)(b) -> J/psi pK(-) Decays
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 082002
EP  - 9pp
VL  - 117
IS  - 8
PB  - Amer Physical Soc
AB  - The data sample of Lambda(0)(b) -> J/psi pK(-) decays acquired with the LHCb detector from 7 and 8 TeV pp collisions, corresponding to an integrated luminosity of 3 fb(-1), is inspected for the presence of J/psi p or J/psi K- contributions with minimal assumptions about K(-)p contributions. It is demonstrated at more than nine standard deviations that Lambda(0)(b) -> J/psi pK(-) decays cannot be described with K- p contributions alone, and that J/psi K- contributions play a dominant role in this incompatibility. These model-independent results support the previously obtained model-dependent evidence for P-c(+)-> J/psi p charmonium-pentaquark states in the same data sample.
SN  - 0031-9007
UR  - http://arxiv.org/abs/1604.05708
UR  - https://doi.org/10.1103/PhysRevLett.117.082002
DO  - 10.1103/PhysRevLett.117.082002
LA  - English
N1  - WOS:000381608500003
ID  - LHCbCollaborationAaij_etal2016
ER  -