scholarly journals Measurement of the Branching Fraction for Inclusive Semileptonic B Meson Decays

2002 ◽  
Author(s):  
Thorsten Brandt
Keyword(s):  
B Meson ◽  
Branching Fraction ◽  
B Meson Decays ◽  
Meson Decays

Branching Ratio and CP Asymmetry in b→sγ and the Study of Exclusive Radiative B Meson Decays at CLEO

2001 ◽  
Vol 16 (supp01b) ◽  
pp. 632-635
Author(s):  
◽  
Jana B. Thayer
Keyword(s):  
B Meson ◽  
Branching Fraction ◽  
Branching Ratio ◽  
Cp Asymmetry ◽  
B Meson Decays ◽  
Significant Evidence ◽  
Meson Decays ◽  
A Value ◽  
Penguin Decays

We have investigated radiative B meson decays with the CLEO detector. An updated result on the branching fraction ℬ(b→sγ)=(3.15±0.35±0.32 ±0.26)×10-4 is reported. We report on a search for CP asymmetry in b→sγ decays, determining that -0.27<ACP<+0.010 at 90% CL. The measurement of the branching fraction for the exclusive mode B→K*(892)γ has been updated with a value of [Formula: see text] and [Formula: see text] and a first measurement of [Formula: see text] is reported with a value of [Formula: see text]. A search for CP asymmetry in B→K*(892)γ decays yields a measurement of ACP=+0.08±0.13±0.03. We find no significant evidence for the decays B→(ρ/ω)γ and we limit ℬ(B →(ρ/ω)γ)/ℬ(B→K*(892)γ)<0.32 at 90% CL. In addition we find no evidence for the non-penguin decays B0→ϕγ and B0→D*0γ.

Rare B meson decays to charmed final states at Belle $(B\to D^{(*)} K^-, B^0\to D^+_s \pi^-)$

2001 ◽  
Vol 16 (supp01a) ◽  
pp. 464-467
Author(s):  
◽  
Yangheng Zheng
Keyword(s):  
B Meson ◽  
Branching Fraction ◽  
Final States ◽  
B Meson Decays ◽  
Meson Decays ◽  
Belle Detector ◽  
Upper Limit ◽  
Cabibbo Suppressed

We report observations of the Cabibbo-suppressed decays B→ D(*)K and an upper limit for the decay branching fraction for [Formula: see text] using a 5.3fb-1 data sample accumulated at the ϒ(4S) resonance with the Belle detector at the KEKB e+e- asymmetric collider.

A SEARCH FOR B→τν

2001 ◽  
Vol 16 (supp01b) ◽  
pp. 636-638 ◽  
Author(s):  
◽  
JOHN GREGG THAYER
Keyword(s):  
Confidence Level ◽  
B Meson ◽  
Branching Fraction ◽  
Slight Modification ◽  
B Meson Decays ◽  
Meson Decays ◽  
Decay Modes ◽  
Upper Limit ◽  
Charged B Meson

We report results of a search for B→τν in a sample of 9.7 million charged B meson decays. The search uses both πν and [Formula: see text] decay modes of the τ, and demands exclusive reconstruction of the companion [Formula: see text] decay to suppress background. We set an upper limit on the branching fraction ℬ(B→τν)<8.4×10-4 at 90% confidence level. With slight modification to the analysis we also establish [Formula: see text] at 90% confidence level.

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

2015 ◽  
Vol 2015 (11) ◽  
Author(s):  
Adam Falkowski ◽  
Marco Nardecchia ◽  
Robert Ziegler
Keyword(s):  
B Meson ◽  
B Meson Decays ◽  
Meson Decays ◽  
Lepton Flavor

scholarly journals |Vub| Determination by B → Dsπ

2003 ◽  
Vol 18 (22) ◽  
pp. 1557-1567 ◽  
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].

scholarly journals Composite leptoquarks and anomalies in B-meson decays

2015 ◽  
Vol 2015 (5) ◽  
Author(s):  
Ben Gripaios ◽  
M. Nardecchia ◽  
S. A. Renner
Keyword(s):  
B Meson ◽  
B Meson Decays ◽  
Meson Decays
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