By working in QED, we obtain the electron, positron, and photon Parton Distribution Functions (PDFs) of the unpolarised electron at the next-to-leading logarithmic accuracy. The PDFs account for all of the universal effects of initial-state collinear origin, and are key ingredients in the calculations of cross sections in the so-called structure- function approach. We present both numerical and analytical results, and show that they agree extremely well with each other. The analytical predictions are defined by means of an additive formula that matches a large-z solution that includes all orders in the QED coupling constant α, with a small- and intermediate-z solution that includes terms up to O(α3).
The partonic structure of the electron at the next-to-leading logarithmic accuracy in QED / V. Bertone, M. Cacciari, S. Frixione, G. Stagnitto. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2020:3(2020 Mar 24), pp. 135.1-135.58.
Titolo: | The partonic structure of the electron at the next-to-leading logarithmic accuracy in QED |
Autori: | |
Parole Chiave: | NLO Computations; High Energy Physics - Phenomenology; High Energy Physics - Phenomenology |
Settore Scientifico Disciplinare: | Settore FIS/02 - Fisica Teorica, Modelli e Metodi Matematici |
Data di pubblicazione: | 24-mar-2020 |
Rivista: | |
Tipologia: | Article (author) |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1007/JHEP03(2020)135 |
Appare nelle tipologie: | 01 - Articolo su periodico |
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