Heavy quark mass effects in charged-current deep-inelastic scattering at approximate NNLO in the Aivazis-Collins-Olness-Tung scheme
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866911308915408896 |
|---|---|
| author | Risse, Peter Bertone, Valerio Ježo, Tomas Kovařík, Karol Kusina, Aleksander Olness, Fredrick Schienbein, Ingo |
| author_facet | Risse, Peter Bertone, Valerio Ježo, Tomas Kovařík, Karol Kusina, Aleksander Olness, Fredrick Schienbein, Ingo |
| contents | The approximate SACOT-$χ$ scheme for heavy quark production in deep-inelastic scattering was initially formulated for the neutral current structure functions $F_2$ and $F_L$. We extend this approach to the charged current case (also including $F_3$), and thereby complete the definitions for the most relevant inclusive structure functions. Furthermore, we implement these structure functions in the open-source code $\texttt{APFEL++}$ which provides fast numerical evaluations over a wide kinematic range; this addition to the $\texttt{APFEL++}$ code is publicly available, with details provided in the appendix. This SACOT-$χ$ implementation enables, for the first time, detailed numerical insights on the mass dependence of the structure functions and cross sections in the $(x,Q^2)$-plane for both neutral and charged current processes. We consider kinematic regions relevant for the experimental measurements from fixed-target $ν$DIS experiments (NuTeV, CCFR and Chorus) and HERA, and also projections for the upcoming EIC. In particular, the $ν$DIS experiments reveal a surprisingly strong dependence on the mass effects, offering valuable insights that may help resolve long-standing challenges in accurately describing these datasets. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_13317 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Heavy quark mass effects in charged-current deep-inelastic scattering at approximate NNLO in the Aivazis-Collins-Olness-Tung scheme Risse, Peter Bertone, Valerio Ježo, Tomas Kovařík, Karol Kusina, Aleksander Olness, Fredrick Schienbein, Ingo High Energy Physics - Phenomenology The approximate SACOT-$χ$ scheme for heavy quark production in deep-inelastic scattering was initially formulated for the neutral current structure functions $F_2$ and $F_L$. We extend this approach to the charged current case (also including $F_3$), and thereby complete the definitions for the most relevant inclusive structure functions. Furthermore, we implement these structure functions in the open-source code $\texttt{APFEL++}$ which provides fast numerical evaluations over a wide kinematic range; this addition to the $\texttt{APFEL++}$ code is publicly available, with details provided in the appendix. This SACOT-$χ$ implementation enables, for the first time, detailed numerical insights on the mass dependence of the structure functions and cross sections in the $(x,Q^2)$-plane for both neutral and charged current processes. We consider kinematic regions relevant for the experimental measurements from fixed-target $ν$DIS experiments (NuTeV, CCFR and Chorus) and HERA, and also projections for the upcoming EIC. In particular, the $ν$DIS experiments reveal a surprisingly strong dependence on the mass effects, offering valuable insights that may help resolve long-standing challenges in accurately describing these datasets. |
| title | Heavy quark mass effects in charged-current deep-inelastic scattering at approximate NNLO in the Aivazis-Collins-Olness-Tung scheme |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2504.13317 |