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 expect...
The first observation of exotic states with a new quark content cc¯us¯ decaying to the J/ψK+ final s...
The first observation of exotic states with a new quark content $c \bar{c} u \bar{s}$ decaying to t...
The data sample of Λ0b → J/ψpK- decays acquired with the LHCb detector from 7 and 8 TeV pp collision...
The first full amplitude analysis of $B^+ \to J/\psi\phi K^+$ with $J/\psi \to \mu^+\mu^−, \phi \to ...
The first full amplitude analysis of B+\u2192J/\u3c8\u3c6K+ with J/\u3c8\u2192\u3bc+\u3bc-, \u3c6\u2...
The first full amplitude analysis of B+→J/ψϕK+ with J/ψ→μ+μ−, ϕ→K+K− decays is performed with a data...
The first full amplitude analysis of B + → J / ψ ϕ K + with J / ψ → μ + μ − , ...
The first full amplitude analysis of B + → J / ψ ϕ K + with J / ψ → μ + μ − , ...
The first full amplitude analysis of $B^+ \to J/\psi\phi K^+$ with $J/\psi \to \mu^+\mu^−$, $\phi \t...
The first full amplitude analysis of B+ -> J/psi phi K+ with J/psi -> mu(+)mu(-), phi -> K+K- decays...
The first full amplitude analysis of B+ -> J/psi phi K+ with J/psi -> mu(+)mu(-), phi -> K+...
The first observation of exotic states with a new quark content cc[over ¯]us[over ¯] decaying to the...
The first observation of exotic states with a new quark content c¯cu¯s decaying to the J/ψK+ final s...
The first full amplitude analysis of B+→J/ψφK+ with J/ψ→μ+μ-, φ→K+K- decays is performed with a data...
A peaking structure in the J/psi phi mass spectrum near threshold is observed in B-+/- -> J/psi p...
The first observation of exotic states with a new quark content cc¯us¯ decaying to the J/ψK+ final s...
The first observation of exotic states with a new quark content $c \bar{c} u \bar{s}$ decaying to t...
The data sample of Λ0b → J/ψpK- decays acquired with the LHCb detector from 7 and 8 TeV pp collision...
The first full amplitude analysis of $B^+ \to J/\psi\phi K^+$ with $J/\psi \to \mu^+\mu^−, \phi \to ...
The first full amplitude analysis of B+\u2192J/\u3c8\u3c6K+ with J/\u3c8\u2192\u3bc+\u3bc-, \u3c6\u2...
The first full amplitude analysis of B+→J/ψϕK+ with J/ψ→μ+μ−, ϕ→K+K− decays is performed with a data...
The first full amplitude analysis of B + → J / ψ ϕ K + with J / ψ → μ + μ − , ...
The first full amplitude analysis of B + → J / ψ ϕ K + with J / ψ → μ + μ − , ...
The first full amplitude analysis of $B^+ \to J/\psi\phi K^+$ with $J/\psi \to \mu^+\mu^−$, $\phi \t...
The first full amplitude analysis of B+ -> J/psi phi K+ with J/psi -> mu(+)mu(-), phi -> K+K- decays...
The first full amplitude analysis of B+ -> J/psi phi K+ with J/psi -> mu(+)mu(-), phi -> K+...
The first observation of exotic states with a new quark content cc[over ¯]us[over ¯] decaying to the...
The first observation of exotic states with a new quark content c¯cu¯s decaying to the J/ψK+ final s...
The first full amplitude analysis of B+→J/ψφK+ with J/ψ→μ+μ-, φ→K+K- decays is performed with a data...
A peaking structure in the J/psi phi mass spectrum near threshold is observed in B-+/- -> J/psi p...
The first observation of exotic states with a new quark content cc¯us¯ decaying to the J/ψK+ final s...
The first observation of exotic states with a new quark content $c \bar{c} u \bar{s}$ decaying to t...
The data sample of Λ0b → J/ψpK- decays acquired with the LHCb detector from 7 and 8 TeV pp collision...