Bridging massive and massless schemes for soft gluon resummation in heavy-flavour production in $e^+e^-$ collisions
Fuente:
arXiv
Guardado en:
| Autores principales: | , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2024
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866915196951330816 |
|---|---|
| author | Ghira, Andrea Mai, Lorenzo Marzani, Simone |
| author_facet | Ghira, Andrea Mai, Lorenzo Marzani, Simone |
| contents | Perturbative calculations for processes involving heavy flavours can be carried out using two approaches: the massive and the massless schemes. These schemes can also be combined to leverage their respective strengths. Additionally, both massive and massless frameworks can be supplemented by soft-gluon resummation. However, matching resummed calculations across the two schemes presents significant challenges, primarily due to the non-commutativity of the soft and small mass limits. The consistent resummation of mass and soft logarithms has been recently achieved at next-to-leading logarithmic (NLL) accuracy. In this paper, we consider heavy-quark fragmentation functions in electron-positron collisions and we extend this framework to achieve the so-called NLL$^\prime$ accuracy, which accounts for finite terms in the soft limit. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_13261 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Bridging massive and massless schemes for soft gluon resummation in heavy-flavour production in $e^+e^-$ collisions Ghira, Andrea Mai, Lorenzo Marzani, Simone High Energy Physics - Phenomenology Perturbative calculations for processes involving heavy flavours can be carried out using two approaches: the massive and the massless schemes. These schemes can also be combined to leverage their respective strengths. Additionally, both massive and massless frameworks can be supplemented by soft-gluon resummation. However, matching resummed calculations across the two schemes presents significant challenges, primarily due to the non-commutativity of the soft and small mass limits. The consistent resummation of mass and soft logarithms has been recently achieved at next-to-leading logarithmic (NLL) accuracy. In this paper, we consider heavy-quark fragmentation functions in electron-positron collisions and we extend this framework to achieve the so-called NLL$^\prime$ accuracy, which accounts for finite terms in the soft limit. |
| title | Bridging massive and massless schemes for soft gluon resummation in heavy-flavour production in $e^+e^-$ collisions |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2412.13261 |