pegasus:overview
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pegasus:overview [23/04/2020 10:27] – lipatov | pegasus:overview [02/09/2023 13:40] – lipatov | ||
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extremely user friendly interface, which allows one | extremely user friendly interface, which allows one | ||
to easily implement various kinematical cuts into the calculations. | to easily implement various kinematical cuts into the calculations. | ||
- | Generated events (weighted or unweighted) can be stored in the | + | Generated events (weighted or unweighted) can be stored in the [[https:// |
- | Les Houches Event file or presented "on the fly" with convenient | + | |
built-in tool [[pegasus: | built-in tool [[pegasus: | ||
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The calculations using PEGASUS include a few general steps common for all of the processes. | 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 | + | When PEGASUS is running, one can select the colliding particles, proton-proton, proton-antiproton |
and set their center-of-mass energy. The default setting corresponds to the LHC Run II setup. | and set their center-of-mass energy. 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 | 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 | ||
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* The user-defined setup for any process (total center-of-mass energy, selected parton densities, kinematical restrictions, | * The user-defined setup for any process (total center-of-mass energy, selected parton densities, kinematical restrictions, | ||
* Weighted or unweighted events can be generated. This option is available via main menu //Edit -> Settings -> Generated events// or via popup menu. | * Weighted or unweighted events can be generated. This option is available via main menu //Edit -> Settings -> Generated events// or via popup menu. | ||
- | * If one needs to generate the Les Houches Event file, one has to mark corresponding option before the calculation starts. Note that this option affects the speed of the calculations. | + | * If one needs to generate the [[https:// |
* The calculation will start by choosing the corresponding option in main menu (// | * The calculation will start by choosing the corresponding option in main menu (// | ||
* If there are several contributing subprocesses, | * If there are several contributing subprocesses, | ||
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^ Set ^ Order of a< | ^ Set ^ Order of a< | ||
+ | | LLM' | ||
| A0 (CCFM) | | A0 (CCFM) | ||
| B0 (CCFM) | | B0 (CCFM) | ||
| JH' | | JH' | ||
| JH' | | JH' | ||
- | | KMR (MMHT'2014) | 1 | 5 | 211 | [[https:// | + | | KLSZ'2020 (KMR) | 1 | 4 | 143 | [[https:// |
- | | KMR (NNPDF3.1) | + | |
- | | KMR (DAS set 1) | 1 | 4 | 143 | [[https:// | + | |
- | | KMR (DAS set 2) | 1 | 4 | 143 | [[https:// | + | |
| PB NLO set 1 | 2 | 4 | 118 | [[https:// | | PB NLO set 1 | 2 | 4 | 118 | [[https:// | ||
| PB NLO set 2 | 2 | 4 | 118 | [[https:// | | PB NLO set 2 | 2 | 4 | 118 | [[https:// | ||
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The A0+, A0-, B0+, B0-, JH' | The A0+, A0-, B0+, B0-, JH' | ||
to estimate the scale uncertainties of the CCFM-based calculations, | to estimate the scale uncertainties of the CCFM-based calculations, | ||
+ | In principle, any other TMD gluon density in a proton could be used: | ||
+ | one just have to upload it from the separate data file (prepared in the standard uPDFEvolve format). | ||
===== Strong coupling and masses of particles ===== | ===== Strong coupling and masses of particles ===== | ||
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* Conventional (collinear) parton densities in a proton are numbered according to the [[https:// | * Conventional (collinear) parton densities in a proton are numbered according to the [[https:// | ||
- | The produced '' | + | The produced '' |
to be compatible with such Monte Carlo generators as [[http:// | to be compatible with such Monte Carlo generators as [[http:// | ||
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===== References ===== | ===== References ===== | ||
- | * A.V. Lipatov, M.A. Malyshev, S.P. Baranov, | + | * A.V. Lipatov, M.A. Malyshev, S.P. Baranov, [[https:// |
===== Acknowledgements ====== | ===== Acknowledgements ====== | ||
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Contributions to the physics in PEGASUS were provided by Anatoly Kotikov (JINR, Dubna) and | Contributions to the physics in PEGASUS were provided by Anatoly Kotikov (JINR, Dubna) and | ||
- | Nizami Abdulov (MSU, Moscow). We thank Vladimir Lyubushkin (JINR, Dubna), | + | Nizami Abdulov (MSU, Moscow). We thank Vladimir Lyubushkin (JINR, Dubna), |
- | who contributed significantly to the functionality and stability of PEGASUS. | + | and Andrey Prokhorov (MSU, Moscow & JINR, Dubna), |
We are especially grateful to Nikolai Zotov, who guided and supervised our first steps in High Energy Physics, | We are especially grateful to Nikolai Zotov, who guided and supervised our first steps in High Energy Physics, | ||
who encouraged our progress in k< | who encouraged our progress in k< | ||
pegasus/overview.txt · Last modified: 15/04/2024 10:14 by lipatov