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Model-Independent Observation of Exotic Contributions to B 0 → J / ψ K + π − Decays
Name
PhysRevLett.122.152002.pdf
Description
Published version
Size
876.27 KB
Format
Adobe PDF
Checksum (MD5)
a069d40c7eb7eb50f745835c6b5caf7b
Date Issued
April 2019
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Citation
2019. "Model-Independent Observation of Exotic Contributions to B 0 → J / ψ K + π − Decays." Physical Review Letters, 122 (15).
Version
Final published version
Abstract
© 2019 CERN. for the LHCb Collaboration. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP 3 . An angular analysis of B0→J/ψK+π- 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+π-) spectrum is divided into fine bins. In each m(K+π-) 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+π- 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/ψπ-) vs m(K+π-) plane suggests structures near m(J/ψπ-)=4200 and 4600 MeV.
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
10.1103/PHYSREVLETT.122.152002
