Abstract
Abstract
The rare decay
$$ \overline{B} $$
B
¯
→ X
s
γ is an important probe of physics beyond the standard model. The largest uncertainty on the total rate and the CP asymmetry arises from resolved photon contributions. These appear first at order 1/m
b
and are related to operators other than Q
7γ
in the effective weak Hamiltonian. One of the three leading contributions,
$$ {Q}_1^q-{Q}_{7\gamma } $$
Q
1
q
−
Q
7
γ
, is described by a non-local function whose moments are related to HQET parameters. We use recent progress in our knowledge of these parameters to reevaluate the resolved photon contribution to
$$ \overline{B} $$
B
¯
→ X
s
γ total rate and CP asymmetry.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
Reference34 articles.
1. M. Misiak et al., Updated NNLO QCD predictions for the weak radiative B-meson decays, Phys. Rev. Lett.114 (2015) 221801 [arXiv:1503.01789] [INSPIRE].
2. Particle Data Group collaboration, Review of particle physics, Phys. Rev.D 98 (2018) 030001 [INSPIRE].
3. HFLAV collaboration, Averages of b-hadron, c-hadron and τ-lepton properties as of summer 2016, Eur. Phys. J.C 77 (2017) 895 [arXiv:1612.07233] [INSPIRE].
4. Belle-II collaboration, The Belle II physics book, arXiv:1808.10567 [INSPIRE].
5. M. Benzke, S.J. Lee, M. Neubert and G. Paz, Factorization at subleading power and irreducible uncertainties in
$$ \overline{B} $$→ Xsγ decay, JHEP08 (2010) 099 [arXiv:1003.5012] [INSPIRE].
Cited by
13 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献