DEMPgen: Physics event generator for Deep Exclusive Meson Production at Jefferson Lab and the EIC
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Notice bibliographique
Résumé
There is increasing interest in deep exclusive meson production (DEMP) reactions, as they provide access to Generalized Parton Distributions over a broad kinematic range, and are the only means of measuring pion and kaon charged electric form factors at high Q 2 . Such investigations are a particularly useful tool in the study of hadronic structure in QCD's transition regime from long-distance interactions described in terms of meson-nucleon degrees of freedom, to short-distance interactions governed by hard quark-gluon degrees of freedom. To assist the planning of future experimental investigations of DEMP reactions in this transition regime, such as at Jefferson Lab and the Electron-Ion Collider (EIC), we have written a special purpose event generator, DEMPgen. Currently, DEMPgen can generate the following reactions: t -channel p ( e , e ′ π + ) n , p ( e , e ′ K + ) Λ [ Σ 0 ] , and n → ( e , e ′ π − ) p from a polarized 3 He target. DEMPgen is modular in form, so that additional reactions can be added over time. The generator produces kinematically-complete reaction events which are absolutely-normalized, so that projected event rates can be predicted, and detector resolution requirements studied. The event normalization is based on parameterizations of theoretical models, appropriate to the kinematic regime under study. Both fixed target modes and collider beam modes are supported. This paper presents the structure of the generator, the model parameterizations used for absolute event weighting, the kinematic distributions of the generated particles, some initial results using the generator, and instructions for its use. PROGRAM SUMMARY Program title: DEMPgen CPC Library link to program files: https://doi.org/10.17632/3nxcm5fsdz.1 Developer's repository link: https://github.com/JeffersonLab/DEMPgen/releases Licensing provisions: GNU General Public License 3 Programming language: C++ External package: ROOT Nature of problem: Despite the increasing interest in deep exclusive meson production (DEMP) reactions, no physics event generator currently exists for these types of reactions. Such a generator is needed for the planning of future experimental investigations at Jefferson Lab and the Electron-Ion Collider (EIC), so we have undertaken to write a special purpose event generator, DEMPgen. Solution method: DEMPgen produces kinematically-complete reaction events which are absolutely-normalized, so that projected event rates can be predicted, and detector resolution requirements studied. The event normalization is based on parameterizations of theoretical models, appropriate to the kinematic regime under study. The following reactions can be generated: t -channel p ( e , e ′ π + ) n , p ( e , e ′ K + ) Λ [ Σ 0 ] , and n → ( e , e ′ π − ) p from a polarized 3 He target. These reactions have been parameterized for kinematic regimes relevant to experiments at SoLID and the EIC (as described in Secs. 3.1 , 3.2 ). DEMPgen is modular in form, so that additional reactions can be added over time. Both fixed target modes and collider beam modes are supported. Additional comments including restrictions and unusual features: DEMPgen events have variable weights, which must be included to yield realistic distributions and rate projections, see Secs. 3.1.2 , 3.3.6 for more details. DEMPgen does not yet include the radiative tail contributions for exclusive lepton-hadron reactions. This is a planned future upgrade, along with other upgrades described in Sec. 5 . Developer's repository maintained by Department of Physics, University of Regina.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,001 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,001 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découle