@Article{LHCbCollaborationAaij_etal2019,
author="LHCb Collaboration (Aaij, R. et al
and Garcia Martin, L. M.
and Henry, L.
and Jashal, B. K.
and Martinez-Vidal, F.
and Oyanguren, A.
and Remon Alepuz, C.
and Ruiz Vidal, J.
and Sanchez Mayordomo, C.",
title="Model-Independent Observation of Exotic Contributions to B degrees -> J/psi K+pi(-) Decays",
journal="Physical Review Letters",
year="2019",
publisher="Amer Physical Soc",
volume="122",
number="15",
pages="152002 - 10pp",
abstract="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.",
optnote="WOS:000465181700002",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3988), last updated on Wed, 01 May 2019 14:06:27 +0000",
issn="0031-9007",
doi="10.1103/PhysRevLett.122.152002",
opturl="https://arxiv.org/abs/1901.05745",
opturl="https://doi.org/10.1103/PhysRevLett.122.152002",
language="English"
}