Physics cases of rare B meson decays at Belle II

This article summarizes recent developments in B\to D^{(\ast)}\tau\nuB→D(*)τν decays. We explain how to extract the tau lepton’s production properties from the kinematics of its decay products. The focus is on hadronic tau decays, which are most sensitive to the tau polarizations. We present new results for effects of new physics in tau polarization observables and quantify the observation prospects at BELLE II.

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Search for an X(3872) charged partner in the decay mode X- --> J/psi pi- pi0 in the B meson decays B0 --> X- K+ and B- --> X- Ks

10.2172/829787 ◽

2004 ◽

Author(s):

B Aubert

Keyword(s):

Decay Mode ◽

B Meson ◽

B Meson Decays ◽

Meson Decays

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Lepton flavor non-universality in B-meson decays from a U(2) flavor model

Journal of High Energy Physics ◽

10.1007/jhep11(2015)173 ◽

2015 ◽

Vol 2015 (11) ◽

Cited By ~ 67

Author(s):

Adam Falkowski ◽

Marco Nardecchia ◽

Robert Ziegler

Keyword(s):

B Meson ◽

B Meson Decays ◽

Meson Decays ◽

Lepton Flavor

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|Vub| Determination by B → Dsπ

Modern Physics Letters A ◽

10.1142/s021773230301137x ◽

2003 ◽

Vol 18 (22) ◽

pp. 1557-1567 ◽

Cited By ~ 3

Author(s):

Hideaki Hayakawa ◽

Kaoru Hosokawa ◽

Takeshi Kurimoto

Keyword(s):

Perturbative Qcd ◽

B Meson ◽

B Meson Decays ◽

Meson Decays ◽

Factorizable Contribution

We investigate [Formula: see text] decay in perturbative QCD approach which has recently been applied to B-meson decays. [Formula: see text] decay (and its charge conjugated mode) can be one of the hopeful modes to determine |Vub| since it occurs through b → u transition only. We estimate both factorizable and non-factorizable contribution, and show that the non-factorizable contribution is much less than the factorizable one. Our calculation gives [Formula: see text].

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