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PKU HEP Seminar and Workshop (北京大学高能物理组)

Triple prompt J/\psi hadroproduction and multiple-parton interaction

by Prof. Yu-Jie Zhang (Beihang University)

Friday, November 19, 2021 from to (Asia/Shanghai)
at CHEP ( B105 )
We propose that the process of triple prompt J/ψ hadroproduction is a very clean hard probe of multiple-parton interaction at high-energy hadron colliders, especially the least known triple-parton scattering (1902.04949). A first complete study is carried out by considering single-, double-, and triple-parton scatterings coherently. Our calculation shows that it is a golden channel to probe double- and triple-parton scatterings, as the single-parton scattering is strongly suppressed. The predictions of the (differential) cross sections in proton-proton collisions at the LHC and future higher-energy hadron colliders are given. Our study shows that its measurement is already feasible with the existing data collected during the period of the LHC run 2. A method is proposed to extract the triple-parton scattering contribution, and therefore it paves a way to study the possible triple-parton correlations in a proton. The experimental data of triple J/ψ meson hadroproduction is released by CMS Collaboration in 2111.05370. Their result confirms our conclusion that triple-J/ψ production is a golden channel to study DPS and TPS, with minimal SPS contamination.  


Tecent Meeting:

Meeting ID:740 560 760