A comprehensive guide to the physics and usage of PYTHIA 8.3

Bierlich, Christian; Chakraborty, Smita; Desai, Nishita; Gellersen, Leif; Helenius, Ilkka; Ilten, P.; Lönnblad, Leif; Mrenna, S.; Prestel, Stefan; Preuss, Christian T; Sjöstrand, Torbjörn; Utheim, Marius; Verheyen, Rob

doi:10.48550/arxiv.2203.11601

Cited by 74 publications

(87 citation statements)

References 362 publications

(653 reference statements)

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“…[10]. Madgraph5, Pythia8 [16] and Delphes [17] programs are setup for various MuCol configurations and used to produce mono-photon and mono-z signals for various dark matter particle masses and centers of mass energies of the collider, as well as the SM background processes.…”

Section: Simulation Setup and Analysismentioning

confidence: 99%

Prospects for Heavy WIMP Dark Matter Searches at Muon Colliders

Black¹,

Bose²,

Dasu³

et al. 2022

Preprint

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A future high-energy muon-muon collider could greatly extend our quest for new physics, providing cleaner final states than those produced at hadron colliders. Among its possible physics program, an interesting opportunity is provided by dark matter. Although strong astrophysical evidence indicates the existence of dark matter, there is no evidence yet for its non-gravitational interactions with standard model particles. If present, these interactions can be studied at colliders and in particular at the future muon-muon collider. In this whitepaper, we present a study for heavy weakly interacting massive particle dark matter particles that are part of a new electroweak multiplet and have a high mass. In particular, we report on prospects for dark matter discovery both mono-photon and mono-Z processes.

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Section: Simulation Setup and Analysismentioning

confidence: 99%

Prospects for Heavy WIMP Dark Matter Searches at Muon Colliders

Black¹,

Bose²,

Dasu³

et al. 2022

Preprint

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show abstract

“…Samples of B + c mesons are generated with Pythia and Bcvegpy. The specific generation settings are listed in Table 3 The specific meanings of the parameters can be found in the relevant documentation [11,12]. Additionally, in Pythia all ground-state heavy hadrons are treated as stable.…”

Section: B + C Mesonsmentioning

confidence: 99%

The role of multi-parton interactions in doubly-heavy hadron production

Egede,

Hadavizadeh,

Singla

et al. 2022

Preprint

Self Cite

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Beauty and charm quarks are ideal probes of pertubative Quantum Chromodymanics in proton-proton collisions, owing to their large masses. In this paper the role of multi-parton interactions in the production of doubly-heavy hadrons is studied using simulation samples generated with Pythia, a Monte Carlo event generator. Comparisons are made to the stand-alone generators Bcvegpy and GenXicc. New methods of speeding up Pythia simulations for events containing heavy quarks are described, enabling the production of large samples with multiple heavy-quark pairs. We show that significantly higher production rates of doubly-heavy hadrons are predicted in models that allow heavy quarks originating from different multi-parton interactions (within the same hadron-hadron collision) to combine to form such hadrons. Quantitative predictions are sensitive to the modelling of colour reconnections. We suggest a set of experimental measurements capable of differentiating these additional contributions.

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“…The parton shower and hadronization are simulated with Pythia 8.235 [22]. Detector reconstruction is performed with the Delphes 3.5.0 [23] approximation to the ATLAS detector.…”

Section: B Simulation Detailsmentioning

confidence: 99%

Hunting for vampires and other unlikely forms of parity violation at the Large Hadron Collider

Lester,

Mastandrea,

Noel

et al. 2022

Preprint

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Non-Standard-Model parity violation may be occurring in LHC collisions. Any such violation would go unseen, however, as searches are for it are not currently performed. One barrier to searches for parity violation is the lack of modelindependent methods sensitive to all of its forms. We remove this barrier by demonstrating an effective and model-independent way to search for parityviolating physics at the LHC. The method is data-driven and makes no reference to any particular parity-violating model. Instead, it inspects data to construct sensitive parity-odd event variables (using machine learning tools), and uses these variables to test for parity asymmetry in independent data. We demonstrate the efficacy of this method by testing it on data simulated from the Standard Model and from a non-standard parity-violating model. This result enables the possibility of investigating a variety of previously unexplored forms of parity violation in particle physics. * Authors are listed in alphabetical order.1 See later comments that BSM parity-violation models, if they are to have observable signals in the context of this work, must abandon at least one of: (i) locality, (ii) Lorentz-invariance, or (iii) a basis in quantum field theory. Vampires are not visible when mirrored [2] and so presumably the laws of physics describing them derive their parity-violation from the loss of at least one of the above three properties!

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A comprehensive guide to the physics and usage of PYTHIA 8.3

Cited by 74 publications

References 362 publications

Prospects for Heavy WIMP Dark Matter Searches at Muon Colliders

Prospects for Heavy WIMP Dark Matter Searches at Muon Colliders

The role of multi-parton interactions in doubly-heavy hadron production

Hunting for vampires and other unlikely forms of parity violation at the Large Hadron Collider

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