Differences

This shows you the differences between two versions of the page.

--- pegasus:overview [15/04/2024 10:07] – lipatov
+++ pegasus:overview [15/04/2024 10:14] (current) – lipatov
@@ Line 26: / Line 26: @@
 PEGASUS is a newly developed parton-level Monte-Carlo event generator
 designed to calculate cross sections for a wide range of hard QCD processes,
-which incorporates the TMD gluon dynamics in a proton.
+which incorporates the TMD gluon dynamics in a proton and nuclei.
 It provides all necessary components, including
 off-shell (dependent on the transverse momenta) production
@@ Line 50: / Line 50: @@
 The calculations using PEGASUS include a few general steps common for all of the processes.
-When PEGASUS is running, one can select the colliding particles, proton-proton, proton-antiproton or electron-proton,
+When PEGASUS is running, one can select the colliding particles, proton-proton, proton-antiproton, proton-nucleus or electron-proton,
-and set their center-of-mass energy. The default setting corresponds to the LHC Run II setup.
+and set beam energies. The default setting corresponds to the LHC Run II setup.
 Then one can select factorization scheme (TMD or collinear one) for each of the colliding particles, choose corresponding parton density function and set the parameters, important
 for further Monte-Carlo simulation, namely, number of iterations and number of simulated events per iteration.
@@ Line 70: / Line 70: @@
 ^ Set      ^  Order of a<sub>s</sub>      ^  N<sub>f</sub>  ^  QCD scale [MeV]  ^  Reference  ^
-| LLM'2022 (CCFM)  |  2  |  4  |  200  |  [[https://arxiv.org/abs/2211.03727|A.V. Lipatov, G.I. Lykasov, M.A. Malyshev]]  |
+| LLM (CCFM)  |  2  |  4  |  200  |  [[https://arxiv.org/abs/2211.03727|A.V. Lipatov, G.I. Lykasov, M.A. Malyshev]]  |
 | A0 (CCFM)  |  1  |  4  |  250  |  [[https://arxiv.org/abs/hep-ph/0411287|H. Jung]]  |
 | B0 (CCFM)  |  1  |  4  |  250  |  [[https://arxiv.org/abs/hep-ph/0411287|H. Jung]]  |
@@ Line 89: / Line 89: @@
 with respect to the number of active flavors and QCD scale.
 This choice is done automatically with the choice of the TMD and/or conventional
-parton densities in a proton. There is no possibility to change it manually since this setup is essential for determination of corresponding parton distributions.
+parton densities. There is no possibility to change it manually since this setup is essential for determination of corresponding parton distributions.
 The masses of all particles (quarks, gauge bosons, heavy quarkonia etc),
@@ Line 108: / Line 108: @@
   * Polarization information is not preserved.
   * A parton carries a tag according to the standard [[http://pdg.lbl.gov/|Particle Data Group]] numbering scheme.
-  * Conventional (collinear) parton densities in a proton are numbered according to the [[https://lhapdf.hepforge.org|LHAPDF]] scheme, while TMD parton distributions are numbered according to the [[https://tmdlib.hepforge.org|TMDLib]] package.
+  * Conventional (collinear) parton densities in a proton and nuclei are numbered according to the [[https://lhapdf.hepforge.org|LHAPDF]] scheme, while TMD parton distributions are numbered according to the [[https://tmdlib.hepforge.org|TMDLib]] package.
 The produced ''*.lhe'' file can then be processed with an external program to introduce some peculiar event selection, [[pegasus:showering| to include parton showers, to hadronize the final particles]], etc. It is found