Investigation of exotic state X(3872) in pp collisions at $$\sqrt{s}=7$$, 13 TeV

• Published in: The European physical journal. C, Particles and fields Vol. 81; no. 9
• Main Authors: Xu, Hong-ge, She, Zhi-Lei, Zhou, Dai-Mei, Zheng, Liang, Kang, Xiao-Lin, Chen, Gang, Sa, Ben-Hao
• Format: Journal Article
• Language: English
• Published: 01.09.2021
• ISSN: 1434-6044; 1434-6052
• DOI: 10.1140/epjc/s10052-021-09573-z

Abstract We have used the dynamically constrained phase space coalescence model to study the production of the exotic state X (3872) based on the hadronic final states generated by the parton and hadron cascade model (PACIAE) with $$|y|<1$$ | y | < 1 and $$p_T < 15.5$$ p T < 15.5 GeV/c in pp collisions at $$\sqrt{s}=7$$ s = 7 and 13 TeV, respectively. Here the X (3872) is assumed to consist of bound state $$D\bar{D^*}$$ D D ∗ ¯ , which can form three possible structures for the tetraquark state, the nucleus-like state, and the molecular state. The yields of three different structures X (3872) were predicted. The transverse momentum distribution and the rapidity distribution of three different structures X (3872) are also presented. Sizable difference can be found in the transverse momentum and rapidity distributions for the three different X (3872) structures.