Towards two- and three-loop QCD corrections to the width difference in $B_s-\bar{B}_s$ mixing
In this work we address the issue of large perturbative uncertainties in the theory prediction for $\Delta \Gamma_s$, the width difference in the $B^0_s - \bar{B}^0_s$ mixing process. To this aim we complete important steps towards the full analytic result for the previously unknown Wilson coeffi...
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| Format: | Article |
| Language: | English |
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SciPost
2022-06-01
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| Series: | SciPost Physics Proceedings |
| Online Access: | https://scipost.org/SciPostPhysProc.7.025 |
| _version_ | 1818253416815656960 |
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| author | Vladyslav Shtabovenko |
| author_facet | Vladyslav Shtabovenko |
| author_sort | Vladyslav Shtabovenko |
| collection | DOAJ |
| description | In this work we address the issue of large perturbative uncertainties in the
theory prediction for $\Delta \Gamma_s$, the width difference in the $B^0_s -
\bar{B}^0_s$ mixing process. To this aim we complete important steps towards
the full analytic result for the previously unknown Wilson coefficients from
the matching between $|\Delta B|=1$ and $|\Delta B|=2$ effective Hamiltonians
at next-to-next-leading order (NNLO) in the strong coupling constant. We
provide a thorough discussion of technical and conceptual difficulties behind
this computation and give an outlook regarding the availability of the new NNLO
theory prediction for $\Delta \Gamma_s$. |
| first_indexed | 2024-12-12T16:39:44Z |
| format | Article |
| id | doaj.art-ddfc9a9cd46d4b7f884b9f72ef3114b0 |
| institution | Directory Open Access Journal |
| issn | 2666-4003 |
| language | English |
| last_indexed | 2024-12-12T16:39:44Z |
| publishDate | 2022-06-01 |
| publisher | SciPost |
| record_format | Article |
| series | SciPost Physics Proceedings |
| spelling | doaj.art-ddfc9a9cd46d4b7f884b9f72ef3114b02022-12-22T00:18:36ZengSciPostSciPost Physics Proceedings2666-40032022-06-01702510.21468/SciPostPhysProc.7.025Towards two- and three-loop QCD corrections to the width difference in $B_s-\bar{B}_s$ mixingVladyslav ShtabovenkoIn this work we address the issue of large perturbative uncertainties in the theory prediction for $\Delta \Gamma_s$, the width difference in the $B^0_s - \bar{B}^0_s$ mixing process. To this aim we complete important steps towards the full analytic result for the previously unknown Wilson coefficients from the matching between $|\Delta B|=1$ and $|\Delta B|=2$ effective Hamiltonians at next-to-next-leading order (NNLO) in the strong coupling constant. We provide a thorough discussion of technical and conceptual difficulties behind this computation and give an outlook regarding the availability of the new NNLO theory prediction for $\Delta \Gamma_s$.https://scipost.org/SciPostPhysProc.7.025 |
| spellingShingle | Vladyslav Shtabovenko Towards two- and three-loop QCD corrections to the width difference in $B_s-\bar{B}_s$ mixing SciPost Physics Proceedings |
| title | Towards two- and three-loop QCD corrections to the width difference in $B_s-\bar{B}_s$ mixing |
| title_full | Towards two- and three-loop QCD corrections to the width difference in $B_s-\bar{B}_s$ mixing |
| title_fullStr | Towards two- and three-loop QCD corrections to the width difference in $B_s-\bar{B}_s$ mixing |
| title_full_unstemmed | Towards two- and three-loop QCD corrections to the width difference in $B_s-\bar{B}_s$ mixing |
| title_short | Towards two- and three-loop QCD corrections to the width difference in $B_s-\bar{B}_s$ mixing |
| title_sort | towards two and three loop qcd corrections to the width difference in b s bar b s mixing |
| url | https://scipost.org/SciPostPhysProc.7.025 |
| work_keys_str_mv | AT vladyslavshtabovenko towardstwoandthreeloopqcdcorrectionstothewidthdifferenceinbsbarbsmixing |