Medium-Assisted Enhancement of $X(3872)$ Production from Small to Large Colliding Systems

• DOI: 10.48550/arxiv.2302.03828
• Publication Date: 2023-01-01
• Authors: Yu Guo; Xingyu Guo; Jinfeng Liao; Enke Wang; Hongxi Xing
• Keywords: High Energy Physics - Phenomenology; High Energy Physics - Phenomenology (hep-ph); FOS: Physical sciences

Studies of exotic hadrons such as the $\chi_{c1} (3872)$ state provide crucial insights into fundamental force governing strong interaction dynamics, with an emerging new frontier to investigate their production in high energy collisions where a partonic medium is present. Latest experimental measurements from Large Hadron Collider show intriguing evolution pattern (3872)$-to-$\psi(2S)$ yield ratio proton-proton increasing multiplicities toward proton-lead and lead-lead collisions. Here we propose novel mechanism medium-assisted enhancement for production, which competes more conventional absorption-induced suppression results non-monotonic trend small large colliding systems. Realistic simulations this model offer first quantitative description all available data. Predictions are made centrality dependence observable PbPb well its system size OO ArAr XeXe In both cases, behavior emerges imprint competition between can be readily tested by future