Matches in SemOpenAlex for { <https://semopenalex.org/work/W2003115813> ?p ?o ?g. }
- W2003115813 abstract "The LHCb Collaboration announced two pentaquark-like structures in the $J/ensuremath{psi}p$ invariant mass distribution. We show that the current information on the narrow structure at 4.45 GeV is compatible with kinematical effects of the rescattering from ${ensuremath{chi}}_{c1}p$ to $J/ensuremath{psi}p$: First, it is located exactly at the ${ensuremath{chi}}_{c1}p$ threshold. Second, the mass of the four-star well-established $mathrm{ensuremath{Lambda}}(1890)$ is such that a leading Landau singularity from a triangle diagram can coincidentally appear at the ${ensuremath{chi}}_{c1}p$ threshold, and third, there is a narrow structure at the ${ensuremath{chi}}_{c1}p$ threshold but not at the ${ensuremath{chi}}_{c0}p$ and ${ensuremath{chi}}_{c2}p$ thresholds. In order to check whether that structure corresponds to a real exotic resonance, one can measure the process ${mathrm{ensuremath{Lambda}}}_{b}^{0}ensuremath{rightarrow}{K}^{ensuremath{-}}{ensuremath{chi}}_{c1}p$. If the ${P}_{c}(4450)$ structure exists in the ${ensuremath{chi}}_{c1}p$ invariant mass distribution as well, then the structure cannot be just a kinematical effect but is a real resonance; otherwise, one cannot conclude that ${P}_{c}(4450)$ is another exotic hadron. In addition, it is also worthwhile to measure the decay $mathrm{ensuremath{Upsilon}}(1S)ensuremath{rightarrow}J/ensuremath{psi}poverline{p}$: a narrow structure at 4.45 GeV but not at the ${ensuremath{chi}}_{c0}p$ and ${ensuremath{chi}}_{c2}p$ thresholds would exclude the possibility of a pure kinematical effect." @default.
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- W2003115813 date "2015-10-21" @default.
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- W2003115813 title "How to reveal the exotic nature of the<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow></mml:msub><mml:mo stretchy=false>(</mml:mo><mml:mn>4450</mml:mn><mml:mo stretchy=false>)</mml:mo></mml:mrow></mml:math>" @default.
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- W2003115813 doi "https://doi.org/10.1103/physrevd.92.071502" @default.
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