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Study of X(6900) with unitarized coupled channel scattering amplitudes

التفاصيل البيبلوغرافية
العنوان: Study of X(6900) with unitarized coupled channel scattering amplitudes
المؤلفون: Shi-Qing Kuang, Qi Zhou, Di Guo, Qin-He Yang, Ling-Yun Dai
المصدر: European Physical Journal C: Particles and Fields, Vol 83, Iss 5, Pp 1-21 (2023)
بيانات النشر: SpringerOpen, 2023.
سنة النشر: 2023
المجموعة: LCC:Astrophysics
LCC:Nuclear and particle physics. Atomic energy. Radioactivity
مصطلحات موضوعية: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
الوصف: Abstract In this paper, we study the resonant state X(6900). The scattering amplitudes of coupled channels, $$J/\psi J/\psi $$ J / ψ J / ψ - $$J/\psi \psi (2S)$$ J / ψ ψ ( 2 S ) - $$J/\psi \psi (3770)$$ J / ψ ψ ( 3770 ) , are constructed with the interaction of four vector mesons described by effective Lagrangians. The amplitudes are calculated up to one loop, decomposed by partial wave projection, and unitarized by Pad $$\acute{e}$$ e ´ approximation. These amplitudes are fitted to the latest experimental data sets of di- $$J/\psi $$ J / ψ and $$J/\psi \psi (2S)$$ J / ψ ψ ( 2 S ) invariant mass spectra of LHCb, CMS, and ATLAS. High-quality solutions are obtained. With these partial wave amplitudes, we extract the pole parameters of the X(6900). Its quantum number is likely to be $$0^{++}$$ 0 + + . According to the pole counting rule as well as analysis of the phase shifts of the partial waves, it supports our previous conclusion that the X(6900) prefers to be a compact tetra-quark.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 1434-6052
Relation: https://doaj.org/toc/1434-6052
DOI: 10.1140/epjc/s10052-023-11473-3
URL الوصول: https://doaj.org/article/6a7ca45d336b4dfc91f724b9b1abea7c
رقم الانضمام: edsdoj.6a7ca45d336b4dfc91f724b9b1abea7c
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:14346052
DOI:10.1140/epjc/s10052-023-11473-3