Correlators of heavy-light quark currents in HQET: Perturbative contribution up to 4 loops and beyond
Fuente:
arXiv
Saved in:
| Main Author: | |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866908869056266240 |
|---|---|
| author | Grozin, Andrey G. |
| author_facet | Grozin, Andrey G. |
| contents | The perturbative contribution to the correlator of two HQET heavy-light currents expanded in light-quark masses up to quadratic terms is calculated up to 4 loops. The leading large-$β_0$ limit is also considered, so that terms with the highest degrees of $n_f$ are calculated to all orders in $α_s$. Borel images of coefficient functions in this limit contain renormalon poles. Naive nonabelianization works surprisingly poorly for the coefficient functions considered here. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_11080 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Correlators of heavy-light quark currents in HQET: Perturbative contribution up to 4 loops and beyond Grozin, Andrey G. High Energy Physics - Phenomenology The perturbative contribution to the correlator of two HQET heavy-light currents expanded in light-quark masses up to quadratic terms is calculated up to 4 loops. The leading large-$β_0$ limit is also considered, so that terms with the highest degrees of $n_f$ are calculated to all orders in $α_s$. Borel images of coefficient functions in this limit contain renormalon poles. Naive nonabelianization works surprisingly poorly for the coefficient functions considered here. |
| title | Correlators of heavy-light quark currents in HQET: Perturbative contribution up to 4 loops and beyond |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2411.11080 |