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

Journal Article · · Physical Review. C
DOI:https://doi.org/10.1103/r8jt-1xpk· OSTI ID:3004760
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  1. Wayne State University; University of JyvΓ€skylΓ€; Helsinki Institute of Physics; University of Helsinki
  2. Wayne State University; University of California; Nuclear Science Division
  3. Wayne State University
  4. Wayne State University; RIKEN BNL Research Center
  5. Lawrence Livermore National Laboratory
  6. Duke University
  7. Massachusetts Institute of Technology; Massachusetts Institute of Technology; Vanderbilt University
  8. McGill University; University of California; Nuclear Science Division
  9. University of California; Nuclear Science Division
  10. GSI Helmholtzzentrum fΓΌr Schwerionenforschung; Goethe University; Frankfurt Institute for Advanced Studies
  11. Texas A&M University; Texas A&M University
  12. McGill University
  13. South China University of Technology
  14. Vanderbilt University
  15. University of Regina; McGill University
  16. Massachusetts Institute of Technology; Massachusetts Institute of Technology
  17. Daresbury Laboratory
  18. Universidade de SΓ£o Paulo
  19. University of Tennessee
  20. University of Liverpool
  21. Physics Department
  22. Wayne State University; Duke University
  23. Wayne State University; Lawrence Livermore National Laboratory
  24. Akita International University
  25. University of Regina
  26. Central China Normal University; University of California; Nuclear Science Division
  27. McGill University; Wayne State University
+ Show Author Affiliations
A new framework, called x-scape, for the combined study of both hard and soft transverse momentum sectors in high-energy proton-proton (π‘βˆ’π‘) and proton-nucleus (π‘βˆ’π΄) 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 π‘βˆ’π‘ and minimum bias π‘βˆ’Pb collisions are presented. Single hadron spectra in π‘βˆ’π‘ 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 𝑝𝑇 and event activity at mid and forward rapidity are carried out.
Research Organization:
Brookhaven National Lab; Wayne State University, Detroit, MI (United States)
Sponsoring Organization:
National Natural Science Foundation of China (NSFC); National Science Foundation (NSF); USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Organization:
The JETSCAPE Collaboration
Grant/Contract Number:
AC02-05CH11231; AC52-07NA27344; FG02-05ER41367; FG02-92ER40713; SC0012704; SC0013460; SC0021969; SC0024232; SC0024347; SC0024660
OSTI ID:
3004760
Alternate ID(s):
OSTI ID: 2583737
Report Number(s):
BNL--228548-2025-JAAM
Journal Information:
Physical Review. C, Journal Name: Physical Review. C Journal Issue: 1 Vol. 112; ISSN 2469-9985; ISSN 2469-9993
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (17)

TABLE I(p. 5)table TABLE I
FIG. 9(p. 10)figure FIG. 9
FIG. 4.(p. 8)figure FIG. 4.
FIG. 6(p. 9)figure FIG. 6
FIG. 3(p. 8)figure FIG. 3
FIG. 5(p. 8)figure FIG. 5
TABLE II(p. 14)table TABLE II
FIG. 1(p. 4)figure FIG. 1
FIG. 13(p. 13)figure FIG. 13
FIG. 10(p. 11)figure FIG. 10
FIG. 11(p. 11)figure FIG. 11
FIG. 7(p. 9)figure FIG. 7
FIG. 14(p. 13)figure FIG. 14
FIG. 2(p. 5)figure FIG. 2
FIG. 15(p. 15)figure FIG. 15
FIG. 12(p. 12)figure FIG. 12
FIG. 8(p. 10)figure FIG. 8

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