Soft photon radiation in particle decays in SHERPA

By M. Schoenherr, F. Krauss. 2008

164 citations recorded by the source corpus.

In this paper the Yennie–Frautschi–Suura approach is used to simulate real and virtual QED corrections in particle decays. It makes use of the universal structure of soft photon corrections to resum the leading logarithmic QED corrections to all orders, and it allows a systematic correction of this approximate result to exact fixed order results from perturbation theory. The approach has been implemented as a Monte Carlo algorithm, which a posteriori modifies decay matrix elements through the emission of varying numbers of photons. The corresponding computer code is incorporated into the SHERPA event generator framework.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/4d8e86ae6aab771a83115d10089dc25c2da65035

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In Nuclear and High Energy Physics

Citations in the corpus

Les Houches 2017: Physics at TeV Colliders Standard Model Working Group Report (2017, methodology): “hadronization and MPI, are also included, as are higher order QED corrections [927].”
The midpoint between dipole and parton showers (2015, unknown): “6 D ire predictions in comparison to LEP data from [90] 123 caseofDrell–Yanleptonpairproduction[86],andhadroniza-tion in the case of e + e − → hadrons [87].”
General-purpose event generators for LHC physics (2011, methodology): “Other additions include a complete model of hadron and τ decays and QED final-state radiation [202] and a simulation of the underlying event based on the multiple-parton scattering ideas of [96].”
Event generation with SHERPA 1.1 (2008, methodology): “Bij . (49) Details can be found in [ 39 ]. 7 The universal real eikonal is defined as a sum over subdipoles”
A critical appraisal of NLO+PS matching methods (2011, methodology): “The predictions presented here include simulation of hadronisation [41] and multiple parton interactions (MPI) [42] as well as hadron decays [43] and higher-order QED corrections to the h→ ττ decay [44].”
Electroweak radiative corrections for collider physics (2019, methodology): “For this reason, multi-purpose event generators typically employ QED parton showers to account for photonic radiation effects, as described in the program descriptions of Herwig [462, 463], Pythia [464], and Sherpa [465, 466] in more detail.”
Les Houches 2015: Physics at TeV Colliders Standard Model Working Group Report (2016, methodology): “[277] focusses on higher-order QED corrections to particle decays and is used since as the default mechanism for such corrections in Sherpa [275], both for elementary particle (e.”
Hard photon production and matrix-element parton-shower merging (2009, methodology): “Extra QED radiation in hadron decays is simulated through PHOTONS++ [49].”
Event generation with Sherpa 2.2 (2019, methodology): “By default, exact first-order QED corrections are applied to Z → ``, W → `ν, h → `` and τ → `ν`ντ and some hadron decays [35, 141, 98, 166].”
A comprehensive approach to new physics simulations (2009, methodology): “Furthermore Sherpa provides an implementation of a cluster-fragmentation model [79], a hadron and tau decay package including the simulation of mixing effects for neutral mesons [80], and an implementation of the YFS formalism to simulate soft-photon radiation [81].”