The width difference in the $B_s$-$\bar B_s$ system: towards NNLO
High Energy Physics - Phenomenology
2019-01-08 v1
Abstract
The width difference among the two mass eigenstates of the - system is measured with a precision of 7%. The theory prediction has a larger uncertainty which mainly stems from unknown perturbative higher-order QCD corrections. I discuss the subset of next-to-next-to-leading order diagrams proportional to , where is the number of quark flavours. The results are published in [1].
Keywords
Cite
@article{arxiv.1901.01444,
title = {The width difference in the $B_s$-$\bar B_s$ system: towards NNLO},
author = {Ulrich Nierste},
journal= {arXiv preprint arXiv:1901.01444},
year = {2019}
}
Comments
Prepared for the Proceedings of the 10th International Workshop on the CKM Unitarity Triangle (CKM 2018)}, Heidelberg, Germany, September 17-21, 2018