Journal article
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. The model includes significant contributions from a number of expected kaon excitations, including the first observation of the $K^{*}(1680)^+\to\phi K^+$ transition.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 2.4MB, Terms of use)
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- Publisher copy:
- 10.1103/PhysRevD.95.012002
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review D More from this journal
- Publication date:
- 2017-01-11
- Acceptance date:
- 2016-11-29
- DOI:
- EISSN:
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2470-0029
- ISSN:
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2470-0010
- Keywords:
- Pubs id:
-
pubs:631515
- UUID:
-
uuid:f08c5a11-a04b-4b38-957e-71e18e5ab64e
- Local pid:
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pubs:631515
- Source identifiers:
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631515
- Deposit date:
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2016-12-05
Terms of use
- Copyright holder:
- CERN
- 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.
- Licence:
- CC Attribution (CC BY)
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