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• W3135968068 abstract "Over the last years, Machine Learning (ML) methods have been successfully applied to a wealth of problems in high-energy physics. For instance, in a previous work we have reported that using ML techniques one can extract the Multiparton Interactions (MPI) activity from minimum-bias pp data. Using the available LHC data on transverse momentum spectra as a function of multiplicity, we reported the average number of MPI ($langle N_{rm mpi} rangle$) for minimum-bias pp collisions at $sqrt{s}=5.02$ and 13,TeV. In this work, we apply the same analysis to a new set of data. We report that $langle N_{rm mpi} rangle$ amounts to $3.98 pm 1.01$ for minimum-bias pp collisions at $sqrt{s}=7$,TeV. These complementary results suggest a modest center-of-mass energy dependence of $langle N_{rm mpi} rangle$. The study is further extended aimed at extracting the multiplicity dependence of $langle N_{rm mpi} rangle$ for the three center-of-mass energies. We show that our results qualitatively agree with existing ALICE measurements sensitive to MPI. Namely, $langle N_{rm mpi} rangle$ increases approximately linearly with the charged-particle multiplicity. But, it deviates from the linear dependence at large charged-particle multiplicities. The deviation from the linear trend can be explained in terms of a bias towards harder processes given the multiplicity selection at mid-pseudorapidity. The results reported in this paper provide additional evidence of the presence of MPI in pp collisions, and they can be useful for a better understanding of the heavy-ion-like behaviour observed in pp data." @default.
• W3135968068 created "2021-03-29" @default.
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• W3135968068 date "2021-07-14" @default.
• W3135968068 modified "2023-09-27" @default.
• W3135968068 title "Extraction of the multiplicity dependence of multiparton interactions from LHC pp data using machine learning techniques" @default.
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• W3135968068 doi "https://doi.org/10.1088/1361-6471/abef1e" @default.
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