Results 21 to 30 of about 31,231 (204)
New determination of |V ub /V cb | from B s 0 $$ {B}_s^0 $$ → {K − , D s − $$ {D}_s^{-} $$ }μ + ν
Journal of High Energy Physics, 2023 We update the full set of B ¯ $$ \overline{B} $$ s → K form factors using light-cone sum rules with an on-shell kaon. Our approach determines the relevant sum rule parameters — the duality thresholds — from a Bayesian fit for the first time.
Carolina Bolognani +2 more
doaj +1 more source
Minimal ten-parameter hermitian texture zeroes mass matrices and the CKM matrix [PDF]
AIP Conference Proceedings, 1998 Hermitian mass matrices for the up and down quarks with texture zeroes but with the minimum number of parameters, ten, are investigated. We show how these {\em minimum parameter} forms can be obtained from a general set of hermitian matrices through weak basis transformations.
Baillargeon, M. +3 more
openaire +3 more sources
The Renormalization Group Evolution of the CKM Matrix [PDF]
, 1999 We compute the renormalization of the complete CKM matrix in the MSbar scheme and perform a renormalization group analysis of the CKM parameters. The calculation is simplified by studying only the Higgs sector, which for the \beta-function of the CKM ...
Balzereit, C. +3 more
core +2 more sources
First look at CKM parameters from early Belle II data [PDF]
Proceedings of European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2019), 2020 After its commissioning in 2018, the Belle II experiment has started registering first physics data delivered by SuperKEKB in 2019. The Belle II physics program focuses on the search for physics beyond the standard model with precise measurements in the flavour sector. The huge targeted dataset and the B-factory particular collision scheme will help to
openaire +2 more sources
Measurement of HQET Parameters and CKM Matrix Elements [PDF]
AIP Conference Proceedings, 2002 The determination of CKM matrix elements in the b-sector is discussed, emphasizing the new measurements of Vub and Vcb by the CLEO collaboration.
openaire +2 more sources
B Physics - A Theoretical Review [PDF]
, 1997 This overview of what we can hope to learn from high-statistics experiments in B physics in the next few years includes: (a) a review of parameters of the Cabibbo-Kobayashi-Maskawa (CKM) Matrix; (b) direct determination of magnitudes of CKM elements; (c)
Amundson +23 more
core +4 more sources
αs and |Vcs| determination, and CKM unitarity test, from W decays at NNLO
Physics Letters B, 2016 The hadronic (ΓhadW) and total (ΓtotW) widths of the W boson, computed at least at next-to-next-to-leading-order (NNLO) accuracy, are combined to derive a new precise prediction for the hadronic W branching ratio BhadW ≡ ΓhadW/ΓtotW=0.682±0.011par, using
David d'Enterria, Matej Srebre
doaj +1 more source
Prospects of CKM parameter measurements at Belle II [PDF]
Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2017), 2017 The Belle II experiment is a substantial upgrade of the Belle detector that will operate at the SuperKEKB energy-asymmetric $e^+e^-$ collider. Belle II is preparing to start recording collisions at the $\Upsilon(4S)$ energy in 2018 and collect $50\text{ ab}^{-1}$ of data by 2025, a factor of 50 more than the Belle experiment.
openaire +1 more source
2000 CKM-triangle analysis a critical review with updated experimental inputs and theoretical parameters [PDF]
Journal of High Energy Physics, 2001 Within the Standard Model, a review of the current determination of the sides and angles of the CKM unitarity triangle is presented, using experimental constraints from the measurements of | _K|, |V_{ub}/V_{cb}|, m_d and from the limit on m_s, available in September 2000.
Marco Ciuchini +7 more
openaire +2 more sources
On the statistical treatment of the Cabibbo angle anomaly
Journal of High Energy Physics, 2020 We point out that testing the equality of the Cabibbo angle as extracted from Γ(K → πlν), the ratio Γ(K → lν)/Γ(π → lν) and nuclear β decays is not identical to a test of first row unitarity of the Cabibbo-Kobayashi-Maskawa (CKM) matrix.
Yuval Grossman +2 more
doaj +1 more source