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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| Language: | English |
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SpringerOpen
2025-08-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-025-14520-3 |
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| author | Hongge Xu Ning Yu Zuman Zhang |
| author_facet | Hongge Xu Ning Yu Zuman Zhang |
| author_sort | Hongge Xu |
| collection | DOAJ |
| description | 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 bound state on the compact state in X(3872). Consequently, the structure of X(3872) can be elucidated. Moreover, the fitting result also can describe well the data for $${X(3872)}\rightarrow {D}^{0}\overline{D}^{0*}$$ X ( 3872 ) → D 0 D ¯ 0 ∗ from Belle experiment, which demonstrate the reliability of our fitting. The fitting indicates that Z is a non-vanishing value within error, which supports that X(3872) has a compact short-distant core. |
| format | Article |
| id | doaj-art-52334b1643e545daa12f15d4b51ef2d8 |
| institution | DOAJ |
| issn | 1434-6052 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-52334b1643e545daa12f15d4b51ef2d82025-08-20T03:05:56ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522025-08-018581610.1140/epjc/s10052-025-14520-3Study the structure of X(3872) from its lineshapeHongge Xu0Ning Yu1Zuman Zhang2School of Physics and Mechanical Electrical and Engineering, Hubei University of EducationSchool of Physics and Mechanical Electrical and Engineering, Hubei University of EducationSchool of Physics and Mechanical Electrical and Engineering, Hubei University of EducationAbstract 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 bound state on the compact state in X(3872). Consequently, the structure of X(3872) can be elucidated. Moreover, the fitting result also can describe well the data for $${X(3872)}\rightarrow {D}^{0}\overline{D}^{0*}$$ X ( 3872 ) → D 0 D ¯ 0 ∗ from Belle experiment, which demonstrate the reliability of our fitting. The fitting indicates that Z is a non-vanishing value within error, which supports that X(3872) has a compact short-distant core.https://doi.org/10.1140/epjc/s10052-025-14520-3 |
| spellingShingle | Hongge Xu Ning Yu Zuman Zhang Study the structure of X(3872) from its lineshape European Physical Journal C: Particles and Fields |
| title | Study the structure of X(3872) from its lineshape |
| title_full | Study the structure of X(3872) from its lineshape |
| title_fullStr | Study the structure of X(3872) from its lineshape |
| title_full_unstemmed | Study the structure of X(3872) from its lineshape |
| title_short | Study the structure of X(3872) from its lineshape |
| title_sort | study the structure of x 3872 from its lineshape |
| url | https://doi.org/10.1140/epjc/s10052-025-14520-3 |
| work_keys_str_mv | AT honggexu studythestructureofx3872fromitslineshape AT ningyu studythestructureofx3872fromitslineshape AT zumanzhang studythestructureofx3872fromitslineshape |