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DOE OSTI · 3004760

Soft-hard framework with exact four-momentum conservation for small systems

Soudi, I. [Wayne State University; University of Jyväskylä; Helsinki Institute of Physics; University of Helsinki] (ORCID:0000000235751782)·Zhao, W. [Wayne State University; University of California; Nuclear Science Division]·Majumder, A. [Wayne State University]·Shen, C. [Wayne State University; RIKEN BNL Research Center]·Putschke, J. H. [Wayne State University]·Boudreaux, B. [Wayne State University]·Angerami, A. [Lawrence Livermore National Laboratory]·Arora, R. [Wayne State University]·Bass, S. A. [Duke University]·Chen, Y. [Massachusetts Institute of Technology; Massachusetts Institute of Technology; Vanderbilt University]·Datta, R. [Wayne State University]·Du, L. [McGill University; University of California; Nuclear Science Division]·Ehlers, R. [University of California; Nuclear Science Division]·Elfner, H. [GSI Helmholtzzentrum für Schwerionenforschung; Goethe University; Frankfurt Institute for Advanced Studies]·Fries, R. J. [Texas A&M University; Texas A&M University]·Gale, C. [McGill University]·He, Y. [South China University of Technology]·Jacak, B. V. [University of California; Nuclear Science Division]·Jacobs, P. M. [University of California; Nuclear Science Division]·Jeon, S. [McGill University]·Ji, Y. [Duke University]·Kasper, L. [Vanderbilt University]·Kelsey, M. [Wayne State University]·Kordell, M. [Texas A&M University; Texas A&M University]·Kumar, A. [University of Regina; McGill University]·Kunnawalkam-Elayavalli, R. [Vanderbilt University]·Latessa, J. [Wayne State University]·Lee, Y.-J. [Massachusetts Institute of Technology; Massachusetts Institute of Technology]·Lemmon, R. [Daresbury Laboratory]·Luzum, M. [Universidade de São Paulo]·Mak, S. [Duke University]·Mankolli, A. [Vanderbilt University]·Martin, C. [University of Tennessee]·Mehryar, H. [Wayne State University]·Mengel, T. [University of Tennessee]·Nattrass, C. [University of Tennessee]·Norman, J. [University of Liverpool]·Parker, C. [Texas A&M University; Texas A&M University]·Paquet, J.-F. [Vanderbilt University]·Roch, H. [Wayne State University]·Roland, G. [Massachusetts Institute of Technology; Massachusetts Institute of Technology]·Schenke, B. [Physics Department]·Schwiebert, L. [Wayne State University]·Sengupta, A. [Texas A&M University; Texas A&M University]·Singh, M. [Vanderbilt University]·Sirimanna, C. [Wayne State University; Duke University]·Soeder, D. [Duke University]·Soltz, R. A. [Wayne State University; Lawrence Livermore National Laboratory]·Tachibana, Y. [Akita International University]·Velkovska, J. [Vanderbilt University]·Vujanovic, G. [University of Regina]·Wang, X.-N. [Central China Normal University; University of California; Nuclear Science Division]·Wu, X. [McGill University; Wayne State University]
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Abstract

A new framework, called x-scape, for the combined study of both hard and soft transverse momentum sectors in high-energy proton-proton (𝑝−𝑝) and proton-nucleus (𝑝−𝐴) collisions is set up. A dynamical initial state is set up using the 3d-Glauber model with transverse locations of hotspots within each incoming nucleon. A hard scattering that emanates from two colliding hotspots is carried out using the Pythia generator. Initial state radiation from the incoming hard partons is carried out in a new module called I-matter, which includes the longitudinal location of initial splits. The energy-momentum of both the initial hard partons and their associated beam remnants is removed from the hot spots, depleting the energy-momentum available for the formation of the bulk medium. Outgoing showers are simulated using the matter generator, and results are presented for both cases, allowing for and not allowing for energy loss. First comparisons between this hard-soft model and single inclusive hadron and jet data from 𝑝−𝑝 and minimum bias 𝑝−Pb collisions are presented. Single hadron spectra in 𝑝−𝑝 are used to carry out a limited (in number of parameters) Bayesian calibration of the model. Fair comparisons with data are indicative of the utility of this new framework. Theoretical studies of the correlation between jet 𝑝 𝑇 and event activity at mid and forward rapidity are carried out.

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73 NUCLEAR PHYSICS AND RADIATION PHYSICSJets & heavy flavor physicsQuark-gluon plasmaRelativistic heavy-ion collisions

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Soudi, I. [Wayne State University; University of Jyväskylä; Helsinki Institute of Physics; University of Helsinki] (ORCID:0000000235751782), Zhao, W. [Wayne State University; University of California; Nuclear Science Division], Majumder, A. [Wayne State University], Shen, C. [Wayne State University; RIKEN BNL Research Center], Putschke, J. H. [Wayne State University], Boudreaux, B. [Wayne State University], Angerami, A. [Lawrence Livermore National Laboratory], Arora, R. [Wayne State University], Bass, S. A. [Duke University], Chen, Y. [Massachusetts Institute of Technology; Massachusetts Institute of Technology; Vanderbilt University], Datta, R. [Wayne State University], Du, L. [McGill University; University of California; Nuclear Science Division], Ehlers, R. [University of California; Nuclear Science Division], Elfner, H. [GSI Helmholtzzentrum für Schwerionenforschung; Goethe University; Frankfurt Institute for Advanced Studies], Fries, R. J. [Texas A&M University; Texas A&M University], Gale, C. [McGill University], He, Y. [South China University of Technology], Jacak, B. V. [University of California; Nuclear Science Division], Jacobs, P. M. [University of California; Nuclear Science Division], Jeon, S. [McGill University], Ji, Y. [Duke University], Kasper, L. [Vanderbilt University], Kelsey, M. [Wayne State University], Kordell, M. [Texas A&M University; Texas A&M University], Kumar, A. [University of Regina; McGill University], Kunnawalkam-Elayavalli, R. [Vanderbilt University], Latessa, J. [Wayne State University], Lee, Y.-J. [Massachusetts Institute of Technology; Massachusetts Institute of Technology], Lemmon, R. [Daresbury Laboratory], Luzum, M. [Universidade de São Paulo], Mak, S. [Duke University], Mankolli, A. [Vanderbilt University], Martin, C. [University of Tennessee], Mehryar, H. [Wayne State University], Mengel, T. [University of Tennessee], Nattrass, C. [University of Tennessee], Norman, J. [University of Liverpool], Parker, C. [Texas A&M University; Texas A&M University], Paquet, J.-F. [Vanderbilt University], Roch, H. [Wayne State University], Roland, G. [Massachusetts Institute of Technology; Massachusetts Institute of Technology], Schenke, B. [Physics Department], Schwiebert, L. [Wayne State University], Sengupta, A. [Texas A&M University; Texas A&M University], Singh, M. [Vanderbilt University], Sirimanna, C. [Wayne State University; Duke University], Soeder, D. [Duke University], Soltz, R. A. [Wayne State University; Lawrence Livermore National Laboratory], Tachibana, Y. [Akita International University], Velkovska, J. [Vanderbilt University], Vujanovic, G. [University of Regina], Wang, X.-N. [Central China Normal University; University of California; Nuclear Science Division], Wu, X. [McGill University; Wayne State University]. 2025-07-17. Soft-hard framework with exact four-momentum conservation for small systems. https://doi.org/10.1103/r8jt-1xpk

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