scholarly journals Semileptonic decays and |Vxb| determinations

2018 ◽  
Vol 182 ◽  
pp. 02104 ◽  
Author(s):  
Giulia Ricciardi
Keyword(s):  
Standard Model ◽  
B Meson ◽  
Semileptonic Decays ◽  
Unitarity Triangle ◽  
B Meson Decays ◽  
Meson Decays ◽  
The Standard Model

We briefly summarize up-to-date results on the determination of the parameters of the Cabibbo-Kobayashi-Maskawa matrix |Vcb| and |Vub|, which play an important role in the unitarity triangle and in testing the Standard Model, and recent results on semileptonic B meson decays involving a τ lepton.

scholarly journals QUANTUM-CORRELATED MEASUREMENTS RELATED TO THE DETERMINATION OF γ/ϕ3

2011 ◽  
Vol 02 ◽  
pp. 127-131
Author(s):  
◽  
J. LIBBY
Keyword(s):  
B Meson ◽  
Unitarity Triangle ◽  
B Meson Decays ◽  
Strong Phase ◽  
Meson Decays ◽  
Cleo Collaboration

Measurements of D0 meson strong-phase parameters in quantum-correlated [Formula: see text] decays by the CLEO collaboration are presented. These measurements play an important role in the determination of the unitarity triangle angle γ/ϕ3 from B-meson decays. Measurements of the strong-phase parameters for D0 → K0π+π-, D0 → K0 K+ K-, D0 → K- π+ π0, and D0 → K- π+ π+ π- decays are described along with their impact on the determination of γ/ϕ3.

scholarly journals THE HIGGS PENGUIN AND ITS APPLICATIONS: AN OVERVIEW

2003 ◽  
Vol 18 (37) ◽  
pp. 2627-2644 ◽  
Author(s):  
ATHANASIOS DEDES
Keyword(s):  
Standard Model ◽  
B Meson ◽  
Higgs Sector ◽  
Complete List ◽  
Supersymmetric Extension ◽  
B Meson Decays ◽  
Meson Decays ◽  
Effective Lagrangian ◽  
The Standard Model ◽  
Minimal Supersymmetric Extension

We review the effective Lagrangian of the Higgs penguin in the Standard Model and its minimal supersymmetric extension (MSSM). As a master application of the Higgs penguin, we discuss in some detail the B-meson decays into a lepton–antilepton pair. Furthermore, we explain how this can probe the Higgs sector of the MSSM provided that some of these decays are seen at Tevatron Run II and B-factories. Finally, we present a complete list of observables where the Higgs penguin could be strongly involved.

scholarly journals η′K PUZZLE OF B MESON DECAYS AND NEW PHYSICS EFFECTS IN THE TC2 MODEL

2001 ◽  
Vol 16 (07) ◽  
pp. 441-455 ◽  
Author(s):  
ZHENJUN XIAO ◽  
WENJUN LI ◽  
GONGRU LU ◽  
LIBO GUO
Keyword(s):  
Standard Model ◽  
B Meson ◽  
New Physics ◽  
Decay Rates ◽  
Low Energy ◽  
Effective Hamiltonian ◽  
B Meson Decays ◽  
The Standard Model ◽  
Model Predictions ◽  
Input Parameters

Using the low energy effective Hamiltonian with the generalized factorization, we calculate the new physics contributions to B→π+π-, Kπ and Kη′ in the topcolor-assisted-technicolor (TC2) model, and compare the results with the available data. By using [Formula: see text] preferred by the CLEO data of B→π+π-decay, we find that the new physics enhancements to B→ Kη′ decays are significant in size, ~ 50% with respect to the standard model predictions, insensitive to the variations of input parameters and hence provide a simple and plausible new physics interpretation for the observed unexpectedly large B→ Kη′ decay rates.

scholarly journals Improved determination of |Vub| from inclusive semileptonic B-meson decays

2002 ◽  
Vol 535 (1-4) ◽  
pp. 127-137 ◽  
Author(s):  
Thomas Becher ◽  
Matthias Neubert
Keyword(s):  
B Meson ◽  
B Meson Decays ◽  
Meson Decays

CP VIOLATION IN B-MESON DECAYS

2005 ◽  
Vol 20 (02n03) ◽  
pp. 385-398
Author(s):  
KLAUS R. SCHUBERT
Keyword(s):  
Cp Violation ◽  
B Meson ◽  
Unitarity Triangle ◽  
Short Introduction ◽  
B Meson Decays ◽  
Ckm Matrix ◽  
Meson Decays ◽  
Babar Experiment ◽  
Cp Asymmetries

After a short introduction on CP asymmetries in K and B meson decays, I discuss a few recent results related to CP violation, mainly from the BABAR experiment: CPT tests in [Formula: see text] mixing, search for CP violation in [Formula: see text] and [Formula: see text] decays, and measurements of the unitarity-triangle angle α in B →ππ and B →ρρ decays. I conclude with the result of a CKM-matrix fit to all relevant observations.

scholarly journals Exploring CP-Violation Through B Decays

2003 ◽  
Vol 18 (21) ◽  
pp. 1413-1433 ◽  
Author(s):  
Robert Fleischer
Keyword(s):  
Cp Violation ◽  
Standard Model ◽  
B Meson ◽  
Model Description ◽  
B Decays ◽  
Unitarity Triangle ◽  
The Standard Model ◽  
B Factory ◽  
Meson System

The B-meson system provides many strategies to perform stringent tests of the Standard-Model description of CP-violation. In this brief review, we discuss implications of the currently available B-factory data on the angles α, β and γ of the unitarity triangle, emphasize the importance of Bsstudies at hadronic B experiments, and discuss new, theoretically clean strategies to determine γ.

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