An up-to-date determination of the CKM matrix elements and of the unitarity triangle on the basis of the available experimental results

1999 ◽  
Vol 112 (10) ◽  
pp. 1229-1237
Author(s):  
M. Bargiotti ◽  
A. Bertin ◽  
M. Bruschi ◽  
M. Capponi ◽  
S. de Castro ◽  
...  
Keyword(s):  
Experimental Results ◽  
Matrix Elements ◽  
Unitarity Triangle ◽  
Ckm Matrix ◽  
Ckm Matrix Elements

scholarly journals IMPLICATIONS OF THE UNITARITY TRIANGLE "uc" FOR J, δ AND |VCKM| ELEMENTS

2000 ◽  
Vol 15 (40) ◽  
pp. 2363-2372 ◽  
Author(s):  
MONIKA RANDHAWA ◽  
V. BHATNAGAR ◽  
P. S. GILL ◽  
M. GUPTA
Keyword(s):  
Matrix Elements ◽  
Unitarity Triangle ◽  
Ckm Matrix ◽  
Ckm Matrix Elements ◽  
Invariant Parameter

The Jarlskog rephasing invariant parameter |J| is evaluated using one of the six unitarity triangles involving well-known CKM matrix elements |Vud|, |Vus|, |Vub/Vcb|, |Vcd|, |Vcs|, and |Vcb|. With PDG2000 values of |Vud| etc. as input, we obtain |J|= (2.71±1.12)×10-5, which in the PDG representation of CKM matrix leads to the range 21° to 159° for the CP violating phase δ. The CKM matrix elements evaluated using this range of δ are in agreement with the PDG CKM matrix. The implications of refinements in the input on |J|, δ and CKM matrix elements have also been studied.

scholarly journals DETERMINATION OF THE CKM MATRIX ELEMENTS |Vxb|

2013 ◽  
Vol 28 (21) ◽  
pp. 1330016 ◽  
Author(s):  
GIULIA RICCIARDI
Keyword(s):  
Current Status ◽  
Matrix Elements ◽  
Ckm Matrix ◽  
The Matrix ◽  
The Absolute ◽  
Ckm Matrix Elements

We review the current status of |Vcb|, |Vub| and |Vtb|, the absolute values of the matrix elements in the CKM third column.

scholarly journals FLAG Review 2019

2020 ◽  
Vol 80 (2) ◽  
Author(s):  
S. Aoki ◽  
Y. Aoki ◽  
D. Bečirević ◽  
T. Blum ◽  
G. Colangelo ◽  
...  
Keyword(s):  
Heavy Quark ◽  
Particle Physics ◽  
Light Quark ◽  
Form Factors ◽  
Matrix Elements ◽  
Ckm Matrix ◽  
Quark Masses ◽  
The Status ◽  
Ckm Matrix Elements

Abstract We review lattice results related to pion, kaon, D-meson, B-meson, and nucleon physics with the aim of making them easily accessible to the nuclear and particle physics communities. More specifically, we report on the determination of the light-quark masses, the form factor $$f_+(0)$$f+(0) arising in the semileptonic $$K \rightarrow \pi $$K→π transition at zero momentum transfer, as well as the decay constant ratio $$f_K/f_\pi $$fK/fπ and its consequences for the CKM matrix elements $$V_{us}$$Vus and $$V_{ud}$$Vud. Furthermore, we describe the results obtained on the lattice for some of the low-energy constants of $$SU(2)_L\times SU(2)_R$$SU(2)L×SU(2)R and $$SU(3)_L\times SU(3)_R$$SU(3)L×SU(3)R Chiral Perturbation Theory. We review the determination of the $$B_K$$BK parameter of neutral kaon mixing as well as the additional four B parameters that arise in theories of physics beyond the Standard Model. For the heavy-quark sector, we provide results for $$m_c$$mc and $$m_b$$mb as well as those for D- and B-meson decay constants, form factors, and mixing parameters. These are the heavy-quark quantities most relevant for the determination of CKM matrix elements and the global CKM unitarity-triangle fit. We review the status of lattice determinations of the strong coupling constant $$\alpha _s$$αs. Finally, in this review we have added a new section reviewing results for nucleon matrix elements of the axial, scalar and tensor bilinears, both isovector and flavor diagonal.

scholarly journals Progress on semi-leptonic B(s) decays

2014 ◽  
Vol 29 (20) ◽  
pp. 1430019 ◽  
Author(s):  
Giulia Ricciardi
Keyword(s):  
Rare Decays ◽  
Current Status ◽  
Matrix Elements ◽  
Ckm Matrix ◽  
The Absolute ◽  
Ckm Matrix Elements

We report on the current status of semi-leptonic B(s) decays, including rare decays, and the extraction of the absolute values of the CKM matrix elements |Vcb| and |Vub|.

scholarly journals THE DUALIZED STANDARD MODEL AND ITS APPLICATIONS — AN INTERIM REPORT

1999 ◽  
Vol 14 (14) ◽  
pp. 2173-2203 ◽  
Author(s):  
HONG-MO CHAN ◽  
SHEUNG TSUN TSOU
Keyword(s):  
Standard Model ◽  
High Energy ◽  
Fermion Mass ◽  
Mass Hierarchy ◽  
Matrix Elements ◽  
Ckm Matrix ◽  
High Energy Cosmic Rays ◽  
Perturbative Method ◽  
Ckm Matrix Elements ◽  
Physical Consequences

Based on a non-Abelian generalization of electric–magnetic duality, the Dualized Standard Model (DSM) suggests a natural explanation for exactly three generations of fermions as the "dual colour" [Formula: see text] symmetry broken in a particular manner. The resulting scheme then offers on the one hand a fermion mass hierarchy and a perturbative method for calculating the mass and mixing parameters of the Standard Model fermions, and on the other hand testable predictions for new phenomena ranging from rare meson decays to ultra-high energy cosmic rays. Calculations to one-loop order gives, at the cost of adjusting only three real parameters, values for the following quantities all (except one) in very good agreement with experiment: the quark CKM matrix elements ‖Vrs‖, the lepton CKM matrix elements ‖Urs‖, and the second generation masses mc, ms, mμ. This means, in particular, that it gives near maximal mixing Uμ3 between νμ and ντ as observed by SuperKamiokande, Kamiokande and Soudan, while keeping small the corresponding quark angles Vcb, Vts. In addition, the scheme gives (i) rough order-of-magnitude estimates for the masses of the lowest generation, (ii) predictions for low energy FCNC effects such as KL→ eμ, and (iii) a possible explanation for the long-standing puzzle of air showers beyond the GZK cut-off. All these together, however, still represent but a portion of the possible physical consequences derivable from the DSM scheme, the majority of which are yet to be explored.

Chapter 22 Leptonic, Semileptonic D(DS) Decays and CKM Matrix Elements

2009 ◽  
Vol 24 (supp01) ◽  
pp. 521-567
Author(s):  
Ya-Dong Yang ◽  
Hai-Bo Li ◽  
Jia-Heng Zou ◽  
Jiang-Chuan Chen ◽  
Jian Liu ◽  
...  
Keyword(s):  
Semileptonic Decays ◽  
Matrix Elements ◽  
Ckm Matrix ◽  
Leptonic Decays ◽  
Ckm Matrix Elements

The following sections are included: Leptonic Decays Semileptonic Decays Impact on CKM Measurements

scholarly journals A REVIEW OF THE MAGNITUDES OF THE CKM MATRIX ELEMENTS

2008 ◽  
Vol 23 (31) ◽  
pp. 4945-4958 ◽  
Author(s):  
FRANCESCA DI LODOVICO
Keyword(s):  
Standard Model ◽  
Current Status ◽  
Matrix Elements ◽  
Ckm Matrix ◽  
The Standard Model ◽  
The Matrix ◽  
The Absolute ◽  
Ckm Matrix Elements

Flavour mixing is described within the Standard Model by the Cabibbo–Kobayashi–Maskawa (CKM) matrix elements. With the increasingly higher statistics collected by many experiments, the matrix elements are measured with improved precision, allowing for more stringent tests of the Standard Model. In this paper, a review of the current status of the absolute values of the CKM matrix elements is presented, with particular attention to the latest measurements.

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