Study the structure of X(3872) from its lineshape

Abstract We fit the invariant mass distribution of $${X(3872)}\rightarrow {J}/{\psi }\pi ^+\pi ^-$$ X ( 3872 ) → J / ψ π + π - from LHCb using the propagator for S-wave near-threshold states in effective field theory. In this way, we can directly determine the Z which measures the projection of the...

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Bibliographic Details
Main Authors: Hongge Xu, Ning Yu, Zuman Zhang
Format: Article
Language:English
Published: SpringerOpen 2025-08-01
Series:European Physical Journal C: Particles and Fields
Online Access:https://doi.org/10.1140/epjc/s10052-025-14520-3
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