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Towards two- and three-loop QCD corrections to the width difference in $B_s-\bar{B}_s$ mixing
by Vladyslav Shtabovenko
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Submission summary
| Authors (as registered SciPost users): | Vladyslav Shtabovenko |
| Submission information | |
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| Preprint Link: | https://arxiv.org/abs/2110.12045v1 (pdf) |
| Date accepted: | 2022-02-02 |
| Date submitted: | 2021-10-26 15:09 |
| Submitted by: | Shtabovenko, Vladyslav |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 15th International Symposium on Radiative Corrections: Applications of Quantum Field Theory to Phenomenology (RADCOR2021) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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Abstract
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 $\Delta \Gamma_s$.
Published as SciPost Phys. Proc. 7, 025 (2022)
Reports on this Submission
Strengths
The article reports on the work presented at RADCOR/LoopFest 2021. It fulfills all the requirements for publication in SciPost Proceedings.
Weaknesses
None.
Report
The article reports on the work presented at RADCOR/LoopFest 2021. It fulfills all the requirements for publication in SciPost Proceedings and therefore we recommend its publication.
Requested changes
None.