TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Garcia Martin, L. M.
AU  - Henry, L.
AU  - Jashal, B. K.
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Remon Alepuz, C.
AU  - Ruiz Vidal, J.
AU  - Sanchez Mayordomo, C.
PY  - 2019
DA  - 2019//
TI  - Model-Independent Observation of Exotic Contributions to B degrees -> J/psi K+pi(-) Decays
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 152002 - 10pp
VL  - 122
IS  - 15
PB  - Amer Physical Soc
AB  - An angular analysis of B degrees -> J/psi K+pi(-) decays is performed, using proton-proton collision data corresponding to an integrated luminosity of 3 fb(-1) collected with the LHCb detector. The m(K+pi(-) ) spectrum is divided into fine bins. In each m(K+pi(-)) bin, the hypothesis that the three-dimensional angular distribution can be described by structures induced only by K* resonances is examined, making minimal assumptions about the K+pi(-) system. The data reject the K*-only hypothesis with a large significance, implying the observation of exotic contributions in a model-independent fashion. Inspection of the m(J/psi pi(-)) vs m(K+pi(-)) plane suggests structures near m(J/psi pi(-)) = 4200 and 4600 MeV.
SN  - 0031-9007
UR  - https://arxiv.org/abs/1901.05745
UR  - https://doi.org/10.1103/PhysRevLett.122.152002
DO  - 10.1103/PhysRevLett.122.152002
LA  - English
N1  - WOS:000465181700002
ID  - LHCbCollaborationAaij_etal2019
ER  -