TY  - EJOUR
AU  - Fieg, Max
AU  - Kling, Felix
AU  - Schulz, Holger
AU  - Sjöstrand, Torbjörn
TI  - Tuning Pythia for Forward Physics Experiments
IS  - DESY-23-133
M1  - PUBDB-2023-05595
M1  - DESY-23-133
M1  - arXiv:2309.08604
PY  - 2023
N1  - We will first submit to arXiv, and later also to a journal.
AB  - 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 modelling 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.
KW  - particle, spectrum (INSPIRE)
KW  - photon, spectrum (INSPIRE)
KW  - CERN LHC Coll (INSPIRE)
KW  - Monte Carlo (INSPIRE)
KW  - LHC-F (INSPIRE)
KW  - flux (INSPIRE)
KW  - hadronization (INSPIRE)
KW  - rapidity (INSPIRE)
KW  - central region (INSPIRE)
LB  - PUB:(DE-HGF)25
DO  - DOI:10.3204/PUBDB-2023-05595
UR  - https://bib-pubdb1.desy.de/record/593930
ER  -