PHOTOS Monte Carlo: a precision tool for QED correctionsin Z and W decays

By P. Golonka, Z. Was. 2005

1,284 citations recorded by the source corpus.

Abstract.We present a discussion of the precision for the PHOTOS Monte Carlo algorithm, with improved implementation of QED interference and multiple-photon radiation. The main application of PHOTOS is the generation of QED radiative corrections in decays of any resonances, simulated by a "host" Monte Carlo generator. By careful comparisons automated with the help of the MC-TESTER tool specially tailored for that purpose, we found that the precision of the current version of PHOTOS is of 0.1% in the case of Z and W decays. In the general case, the precision of PHOTOS was also improved, but this will not be quantified here.

Subfields: Electrical and Electronic Engineering, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/e6de58cb5579545f007df03dd5bdd8ed6e2f6792

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Citations in the corpus

Measurement of the Z/ѵ* boson transverse momentum distribution in pp collisions at √s = 7 TeV with the ATLAS detector (2014, methodology): “All generators are interfaced to Pho-tos 2.154 [37] and Tauola 2.4 [38] to simulate QED ﬁnal-state radiation (FSR) and τ -lepton decays, except Sherpa and Pythia8 , which rely on their internal treatment.”
First observations of the rare decays B (+) -> K (+)pi (+)pi (-)mu(+)mu (-) and B (+)-> phi K (+)mu(+)mu (-) (2014, methodology): “Decays of hadronic particles are described by EvtGen [25], in which final-state radiation is generated using Photos [26].”
Measurement of the photon identification efficiencies with the ATLAS detector using LHC Run-1 data (2016, positive): “= e , μ ) events are generated with SHERPA [34] or with POWHEG [35,36] interfaced to PHOTOS [37] for the mod- ellingofQEDﬁnal-stateradiationandtoPYTHIA8forshow-ering, hadronisation and modelling of the underlying event.”
Differential branching fraction and angular analysis of the decay B0 → K∗0μ+μ− (2013, methodology): “Decays of hadronic particles are then described by EvtGen [15] in which final state radiation is generated using Photos [16].”
Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC (2012, positive): “When PYTHIA6 or HERWIG are used, TAUOLA [76] and PHOTOS [77] are employed to describe tau lepton decays and additional photon radiation from charged leptons, respectively.”
Search for production of vector-like quark pairs and of four top quarks in the lepton-plus-jets final state in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector (2015, background): “15 [85] to simulate photon radiation and Tauola 1.”
Performance of the ATLAS muon triggers in Run 2 (2020, background): “52) [8, 9] to simulate the effects of final-state radiation.”
Test of lepton flavor universality by the measurement of the branching fraction using three-prong decays (2017, methodology): “Decays of hadronic particles are described by EvtGen [33], in which final-state radiation is generated using Photos [34].”
Design and performance of the LHCb trigger and full real-time reconstruction in Run 2 of the LHC (2018, methodology): “Decays of hadronic particles are described by EvtGen [13], in which final-state radiation is generated using Photos [14].”
Les Houches 2013: Physics at TeV Colliders: Standard Model Working Group Report (2014, methodology): “PHOTOS and SANC QED FSR agree quantitatively very well [304].”