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  1. Pubblicazioni

Kinematic regions in the e+e− → hX factorized cross section in a 2-jet topology with thrust

Articolo
Data di Pubblicazione:
2022
Abstract:
Factorization theorems allow to separate out the universal, non-perturbative content of the hadronic cross section from its perturbative part, which can be computed in perturbative QCD, up to the desired order. In this paper, we derive a rigorous proof of factorization of the e+e−→hX cross section, sensitive to the transverse momentum of the detected hadron with respect to the thrust axis, in a completely general framework, based on the Collins-Soper-Sterman approach. The results are explicitly computed to NLO-NLL accuracy and subsequently generalized to all orders in perturbation theory. This procedure naturally leads to a partition of the e+e−→h X kinematics into three different regions, each associated to a different factorization theorem. In one of these regions, which covers the central and widest range, the factorization theorem has a new structure, which shares the features of both TMD and collinear factorization schemes. In the corresponding cross section, the role of the rapidity cut-off is investigated, as its physical meaning becomes increasingly evident. An algorithm to identify these three kinematic regions, based on ratios of observable quantities, is provided.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
Boglione, M.; Simonelli, A.
Autori di Ateneo:
BOGLIONE Mariaelena
Link alla scheda completa:
https://iris.unito.it/handle/2318/1838310
Link al Full Text:
https://iris.unito.it/retrieve/handle/2318/1838310/931517/document.pdf
Pubblicato in:
JOURNAL OF HIGH ENERGY PHYSICS
Journal
  • Dati Generali

Dati Generali

URL

https://arxiv.org/pdf/2109.11497.pdf
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