Journal article
Observation of $J/ψφ$ structures consistent with exotic states from amplitude analysis of $B^+\to J/ψφK^+$ decays
- Abstract:
- The first full amplitude analysis of $B^+\to J/\psi \phi K^+$ with $J/\psi\to\mu^+\mu^-$, $\phi\to K^+K^-$ decays is performed with a data sample of 3 fb$^{-1}$ of $pp$ collision data collected at $\sqrt{s}=7$ and $8$ TeV with the LHCb detector. The data cannot be described by a model that contains only excited kaon states decaying into $\phi K^+$, and four $J/\psi\phi$ structures are observed, each with significance over $5$ standard deviations. The quantum numbers of these structures are determined with significance of at least $4$ standard deviations. The lightest is best described as a $D_s^{\pm}D_s^{*\mp}$ cusp, but a resonant interpretation is also possible with mass consistent with, but width much larger than, previous measurements of the claimed $X(4140)$ state.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 379.3KB, Terms of use)
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- Publisher copy:
- 10.1103/PhysRevLett.118.022003
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review Letters More from this journal
- Volume:
- 118
- Issue:
- 2
- Pages:
- 1-10
- Publication date:
- 2017-01-11
- Acceptance date:
- 2016-09-29
- DOI:
- EISSN:
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1079-7114
- ISSN:
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0031-9007
- Keywords:
- Pubs id:
-
pubs:631514
- UUID:
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uuid:1d2a6b05-69aa-4f67-b953-7fbfc7354e19
- Local pid:
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pubs:631514
- Source identifiers:
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631514
- Deposit date:
-
2016-12-05
Terms of use
- Copyright holder:
- © 2017 CERN, for the LHCb Collaboration
- Copyright date:
- 2017
- Notes:
- © 2017 CERN, for the LHCb Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
- Licence:
- CC Attribution (CC BY)
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