TY  - JOUR
AU  - Fieg, Max
AU  - Kling, Felix
AU  - Schulz, Holger
AU  - Sjöstrand, Torbjörn
TI  - Tuning pythia for forward physics experiments
JO  - Physical review / D
VL  - 109
IS  - 1
SN  - 2470-0010
CY  - Ridge, NY
PB  - American Physical Society
M1  - PUBDB-2023-05602
M1  - DESY-23-133
M1  - arXiv:2309.08604
SP  - 016010
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 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.
KW  - PYTHIA (INSPIRE)
KW  - particle: spectrum (INSPIRE)
KW  - photon: spectrum (INSPIRE)
KW  - neutrino: 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)
KW  - forward production (INSPIRE)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001174137800010
DO  - DOI:10.1103/PhysRevD.109.016010
UR  - https://bib-pubdb1.desy.de/record/594048
ER  -