Tuning pythia for forward physics experiments
(2024) In Physical Review D 109(1).- Abstract
Event generators like pythia play an important role in physics studies at the Large Hadron Collider (LHC). While they make accurate predictions in the central region, i.e., at pseudorapidities η<5, a disagreement between pythia and measurements in the forward region η>7 has been observed. We introduce a dedicated forward physics tune for the pythia event generator to be used for forward physics studies at the LHC, which uses a more flexible modeling of beam remnant hadronization and is tuned to available particle spectra measured by LHCf. Furthermore, we provide an uncertainty estimate on the new tune in a data-driven way which can be used as a means of flux uncertainty for future forward physics studies. We demonstrate an... (More)
Event generators like pythia play an important role in physics studies at the Large Hadron Collider (LHC). While they make accurate predictions in the central region, i.e., at pseudorapidities η<5, a disagreement between pythia and measurements in the forward region η>7 has been observed. We introduce a dedicated forward physics tune for the pythia event generator to be used for forward physics studies at the LHC, which uses a more flexible modeling of beam remnant hadronization and is tuned to available particle spectra measured by LHCf. Furthermore, we provide an uncertainty estimate on the new tune in a data-driven way which can be used as a means of flux uncertainty for future forward physics studies. We demonstrate an application of our tune by showing the updated neutrino and dark photon spectra at the FASER experiment.
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- author
- Fieg, Max ; Kling, Felix ; Schulz, Holger and Sjöstrand, Torbjörn LU
- organization
- publishing date
- 2024
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review D
- volume
- 109
- issue
- 1
- article number
- 016010
- publisher
- American Physical Society
- external identifiers
-
- scopus:85182369016
- ISSN
- 2470-0010
- DOI
- 10.1103/PhysRevD.109.016010
- language
- English
- LU publication?
- yes
- id
- ed5549c7-fbcc-4970-9e5b-b2cb6c3ddf2b
- date added to LUP
- 2024-02-16 12:27:07
- date last changed
- 2024-02-16 12:28:31
@article{ed5549c7-fbcc-4970-9e5b-b2cb6c3ddf2b, abstract = {{<p>Event generators like pythia play an important role in physics studies at the Large Hadron Collider (LHC). While they make accurate predictions in the central region, i.e., at pseudorapidities η<5, a disagreement between pythia and measurements in the forward region η>7 has been observed. We introduce a dedicated forward physics tune for the pythia event generator to be used for forward physics studies at the LHC, which uses a more flexible modeling of beam remnant hadronization and is tuned to available particle spectra measured by LHCf. Furthermore, we provide an uncertainty estimate on the new tune in a data-driven way which can be used as a means of flux uncertainty for future forward physics studies. We demonstrate an application of our tune by showing the updated neutrino and dark photon spectra at the FASER experiment.</p>}}, author = {{Fieg, Max and Kling, Felix and Schulz, Holger and Sjöstrand, Torbjörn}}, issn = {{2470-0010}}, language = {{eng}}, number = {{1}}, publisher = {{American Physical Society}}, series = {{Physical Review D}}, title = {{Tuning pythia for forward physics experiments}}, url = {{http://dx.doi.org/10.1103/PhysRevD.109.016010}}, doi = {{10.1103/PhysRevD.109.016010}}, volume = {{109}}, year = {{2024}}, }