Factorization of the Energy-Energy Correlation in the two-jet limit in the massive case
Abstract
We consider non-logarithmic heavy-quark mass effects in the factorization and resummation of the Energy-Energy-Correlation (EEC) function, in the two-jet limit. We define a new, "partial" event fraction, restricted to the two-jet region and excluding the forward region, whose calculation at first order requires to consider real emission diagrams only, in D=4 space-time dimensions (no need to consider virtual diagrams or take D ≠ 4). In order to determine explicitly the next-to-leading order coefficient function and the remainder function (both entering the standard resummation formula), we evaluate numerically the EEC spectrum at first-order in αS, finding good agreement with previous calculations. To have a smooth massless limit, a new, improved factorization scheme is proposed, in which the coefficient function also depends on the correlation angle χ.
Versions
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BibTeX
@misc{aglietti2026factorization,
title = {{Factorization of the Energy-Energy Correlation in the two-jet limit in the massive case}},
author = {Ugo Giuseppe Aglietti and Giancarlo Ferrera and Lorenzo Rossi},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2606.25977},
eprint = {2606.25977},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2606.25977},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Factorization of the Energy-Energy Correlation in the two-jet limit in the massive case
AU - Ugo Giuseppe Aglietti
AU - Giancarlo Ferrera
AU - Lorenzo Rossi
PY - 2026
DA - 2026/10/07
PB - arXiv
DO - 10.48550/arxiv.2606.25977
UR - https://arxiv.org/abs/2606.25977
AB - We consider non-logarithmic heavy-quark mass effects in the factorization and resummation of the Energy-Energy-Correlation (EEC) function, in the two-jet limit. We define a new, "partial" event fraction, restricted to the two-jet region and excluding the forward region, whose calculation at first order requires to consider real emission diagrams only, in D=4 space-time dimensions (no need to consider virtual diagrams or take D ≠ 4). In order to determine explicitly the next-to-leading order coefficient function and the remainder function (both entering the standard resummation formula), we evaluate numerically the EEC spectrum at first-order in α_S, finding good agreement with previous calculations. To have a smooth massless limit, a new, improved factorization scheme is proposed, in which the coefficient function also depends on the correlation angle χ.
ER -