| Autor: |
Wu, Chun-tai, She, Zhi-Lei, Peng, Xin-Ye, Kang, Xiao-Lin, Zhou, Hong-Ge Xu Dai-Mei, Chen, Gang, Sa, Ben-Hao |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Phys. Rev. D 107 (2023) 114022 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevD.107.114022 |
| Popis: |
A dynamically constrained phase-space coalescence (DCPC) model was introduced to study the exotic state $\chi_{c 1}(3872)$ yield for three possible structures: tetraquark state, nuclear-like state, and molecular state respectively, where the hadronic final states generated by the parton and hadron cascade model (PACIAE). The $\chi_{c 1}(3872)$/$\psi (2S)$ cross-section ratio from beauty-hadron decays (non-prompt) based on the $\chi_{c 1}(3872)$ or $\psi (2S)\to J/\psi{\pi^+}{\pi^-}$ bound state in the decay chains as a function of charged-particle multiplicity and transverse momentum in $pp$ collisions at $\sqrt{s}=8\,\mathrm{TeV}$ are calculated. A tetraquark state scenario from PACIAE+DCPC model shows better agreement with the LHCb and ATLAS measurements for the non-prompt $\chi_{c 1}(3872)$/$\psi(2S)$ cross-section ratio distributions, indicating that the $\chi_{c 1}(3872)$ is more likely to be a compact tetraquark state. |
| Databáze: |
arXiv |
| Externí odkaz: |
|
