| Autor: |
Luca Buonocore, Massimiliano Grazzini, Flavio Guadagni, Luca Rottoli |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
European Physical Journal C: Particles and Fields, Vol 84, Iss 4, Pp 1-12 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
1434-6052 |
| DOI: |
10.1140/epjc/s10052-024-12788-5 |
| Popis: |
Abstract We consider subleading power corrections to event shape variables in $$e^+e^-$$ e + e - collisions at the first order in the QCD coupling $$\alpha _{\textrm{S}}$$ α S . We start from the jettiness variable $$\tau _2$$ τ 2 and the $$y_{23}$$ y 23 resolution variable for the $$k_T$$ k T jet clustering algorithm and we analytically compute the corresponding cumulative cross section. We investigate the origin of the different power suppressed contributions in the two-jet limit and trace it back to their different coverage of the phase space. We extend our analysis to the case of thrust and of the C-parameter, and we finally discuss a class of observables that depend on a continuous parameter giving different weight to central and forward emissions and we evaluate the corresponding subleading power corrections. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
|
Nepřihlášeným uživatelům se plný text nezobrazuje |
K zobrazení výsledku je třeba se přihlásit.
|
