Results 111 to 120 of about 3,322 (216)

Implication of the B→(ρ,ω)γ branching ratios for the CKM phenomenology

, 2004
We study the implication of the recent measurement by the BELLE Collaboration of the averaged branching fraction B̄exp[B→(ρ,ω)γ]=(1.8+0.6−0.5±0.1)×10−6 for the CKM phenomenology. Combined with the averaged branching fraction B̄exp(B→K∗γ)=(4.06±0.26)×10−5
Ali, Ahmed, Lunghi, Enrico, Enrico Lunghi, Ahmed Ali, Parkhomenko, Alexander Ya., Alexander Ya. Parkhomenko   +5 more
core   +1 more source

Determining the CKM Parameter Vcd from nuN Charm Production

, 1997
The formalism for extracting the CKM parameter $V_{cd}$ from $νN$ production of charm is discussed in some detail. The various model assumptions needed are clearly pointed out. A direct determination from neutrino induced dimuon production requires $νN$ charm production data, $% νN$ charm hadronization data, and the semi-muonic branching ratios for ...
openaire   +2 more sources

SLAC-PUB-15659 CKM angles and sides from BABAR

, 2014
on behalf of the BABAR Collaboration Abstract. The CKM paradigm has been proven to be successful in explaining the flavour structure of the standard model and the non-trivial imaginary phase of the CKM matrix is the only know source of CP-violation.
Alessandro Gaz
core  

Recent Belle II results on the CKM parameters |V_cb| and |V_ub|

Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2023)
Published by SISSA ...
openaire   +3 more sources

CKM global fit and constraints on New Physics in the B meson mixing

, 2008
ICHEP08International audienceAn update profile of the CKM matrix is given, providing numerical and graphical constraints on the CKM parameters in the Standard Model. Constraints on additional parameters accounting for possible new physics contribution in
Deschamps, O.
core  

Relationships between Quark Masses and the CKM Elements

, 1997
There are mysteries that the origin of small values in the Cabibbo-KobayashiMaskawa (CKM) matrix and the reason why the CKM matrix is close the unit matrix. We use the general quark mass matrices in order to solve the these problems.
N. Okamura, Okamura Department
core  

Quark mass matrices, textures and CKM precision measurements

, 2017
In the light of several recent analyses pointing toward texture 4-zero Fritzsch-like quark mass matrices as the only viable structures for quark mass matrices, this work adopts a model independent approach to reconstruct an alternate and simplified ...
Rohit Verma
core   +1 more source

Light quark loops in K ± → π ± ν ν ¯ $$ {K}^{\pm}\to {\pi}^{\pm}\nu \overline{\nu} $$ from vector meson dominance and update on the Kaon Unitarity Triangle

Journal of High Energy Physics
We use vector meson dominance to calculate non-perturbative contributions to the branching ratio of the rare decay K ± → π ± ν ν ¯ $$ {K}^{\pm}\to {\pi}^{\pm}\nu \overline{\nu} $$ stemming from matrix elements involving up-quark loops.
Enrico Lunghi, Amarjit Soni
doaj   +1 more source

Renormalization invariants and the CKM matrix

, 2009
In this research work, we introduce a rephrasing invariant parameterization of the CKM matrix, which is parameterized in terms of six manifestly rephrasing invariant parameters, and they exhibit explicitly hierarchies in power of λ 2, from zero order ...
Liu, Luxin
core  

Why CKM and PMNS Angles Are Not Free Parameters

Why CKM and PMNS Angles Are Not Free Parameters A Geometric Rigidity Principle within the Temporal Theory of the Universe (TTU) In the Standard Model, the CKM and PMNS mixing matrices are introduced as independent empirical inputs, a "free‑angle paradigm" that lacks a dynamical explanation.
openaire   +1 more source