Amplitude analysis of B⁺→J/ψΦK⁺ decays

Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G
et al (show 746 more authors) (2017) Amplitude analysis of B⁺→J/ψΦK⁺ decays. Physical Review D: Particles, Fields, Gravitation and Cosmology, 95 (1). 012002-.

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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 has 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.

Item Type: Article
Additional Information: 62 pages 26 figures
Uncontrolled Keywords: Charm quark, Mesons, Quark model, Strange quark
Depositing User: Symplectic Admin
Date Deposited: 22 Feb 2017 15:29
Last Modified: 19 Jan 2023 07:16
DOI: 10.1103/PhysRevD.95.012002
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