scholarly journals Hadronic matrix elements for B-mixing in the standard model and beyond

2013 ◽  
Author(s):  
C. M. Bouchard ◽  
Fermilab Lattice Collaboration ◽  
MILC Collaboration
Keyword(s):  
Standard Model ◽  
Matrix Elements ◽  
The Standard Model ◽  
B Mixing

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.

scholarly journals DALITZ ANALYSES: A TOOL FOR PHYSICS WITHIN AND BEYOND THE STANDARD MODEL

2006 ◽  
Vol 21 (27) ◽  
pp. 5503-5512 ◽  
Author(s):  
M. R. PENNINGTON
Keyword(s):  
Standard Model ◽  
Strong Coupling Regime ◽  
Hadronic Decays ◽  
Beyond The Standard Model ◽  
Final States ◽  
Matrix Elements ◽  
Final State ◽  
Ckm Matrix ◽  
The Standard Model ◽  
Final State Interactions

Dalitz analyses are introduced as the method for studying hadronic decays. An accurate description of hadron final states is critical not only to an understanding of the strong coupling regime of QCD, but also to the precision extraction of CKM matrix elements. The relation of such final state interactions to scattering processes is discussed.

RECENT RESULTS FROM ARGUS

1993 ◽  
Vol 08 (07) ◽  
pp. 573-582 ◽  
Author(s):  
HENNING SCHRÖDER
Keyword(s):  
Standard Model ◽  
Storage Ring ◽  
Confidence Level ◽  
Fundamental Constants ◽  
Matrix Elements ◽  
B Decays ◽  
Ckm Matrix ◽  
Upper Limit ◽  
The Standard Model ◽  
Yukawa Sector

Using the ARGUS detector at the e+e− storage ring DORIS II at DESY new results on beauty and τ physics have been obtained. In particular, new measurements on fundamental constants in the Yukawa sector of the Standard Model are presented. These comprise measurements of CKM matrix elements from the study of B decays as well as determinations of properties of the τ lepton and its neutrino vτ. From semileptonic B decays ARGUS finds |Vcb|=0.050±0.008±0.007 and from [Formula: see text] mixing |Vtd|= 0.007±0.002. An analysis of the decay type τ−→π−π−π+ντ yields a τ mass of mτ=(1776.3±2.4±1.4) MeV/c2. This result also leads to an improvement of the upper limit on the [Formula: see text] at the 95% confidence level.

scholarly journals Non-perturbative renormalization scheme for the C P -odd three-gluon operator

2020 ◽  
Vol 2020 (9) ◽  
Author(s):  
Vincenzo Cirigliano ◽  
Emanuele Mereghetti ◽  
Peter Stoffer
Keyword(s):  
Standard Model ◽  
Lattice Qcd ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Effective Field ◽  
Renormalization Scheme ◽  
Beyond The Standard Model ◽  
Matrix Elements ◽  
The Standard Model ◽  
Perturbative Renormalization

Abstract We define a regularization-independent momentum-subtraction scheme for the C P -odd three-gluon operator at dimension six. This operator appears in effective field theories for heavy physics beyond the Standard Model, describing the indirect effect of new sources of C P-violation at low energies. In a hadronic context, it induces permanent electric dipole moments. The hadronic matrix elements of the three-gluon operator are non-perturbative objects that should ideally be evaluated with lattice QCD. We define a non-perturbative renormalization scheme that can be implemented on the lattice and we compute the scheme transformation to $$ \overline{\mathrm{MS}} $$ MS ¯ at one loop. Our calculation can be used as an interface to future lattice-QCD calculations of the matrix elements of the three-gluon operator, in order to obtain theoretically robust constraints on physics beyond the Standard Model from measurements of the neutron electric dipole moment.

scholarly journals B(s)0-mixing matrix elements from lattice QCD for the Standard Model and beyond

2016 ◽  
Vol 93 (11) ◽  
Author(s):  
A. Bazavov ◽  
C. Bernard ◽  
C. M. Bouchard ◽  
C. C. Chang ◽  
C. DeTar ◽  
...  
Keyword(s):  
Standard Model ◽  
Lattice Qcd ◽  
Matrix Elements ◽  
The Standard Model ◽  
Mixing Matrix

scholarly journals Standard Model EFTs via on-shell methods

2021 ◽  
Vol 2021 (11) ◽  
Author(s):  
Manuel Accettulli Huber ◽  
Stefano De Angelis
Keyword(s):  
Standard Model ◽  
Building Blocks ◽  
Effective Field ◽  
Tree Level ◽  
Matrix Elements ◽  
Effective Interactions ◽  
S Matrix ◽  
The Standard Model ◽  
Mass Dimension ◽  
Mixing Matrix

Abstract We present the Standard Model Effective Field Theories (SMEFT) from purely on-shell arguments. Starting from few basics assumptions such as Poincaré invariance and locality, we classify all the renormalisable and non-renormalisable interactions at lowest order in the couplings. From these building blocks, we review how locality and unitarity enforce Lie algebra structures to appear in the S-matrix elements together with relations among couplings (and hypercharges). Furthermore, we give a fully on-shell algorithm to compute any higher-point tree-level amplitude (or form factor) in generic EFTs, bypassing BCFW-like recursion relations which are known to be problematic when non-renormalisable interactions are involved. Finally, using known amplitudes techniques we compute the mixing matrix of SMEFT marginal interactions up to mass dimension 8, to linear order in the effective interactions.

scholarly journals Neutral B mixing from 2+1 flavor lattice QCD: the Standard Model and beyond

2012 ◽  
Author(s):  
Elizabeth Freeland ◽  
Chris Bouchard ◽  
C. Bernard ◽  
Aida X El-Khadra ◽  
Elvira Gamiz ◽  
...  
Keyword(s):  
Standard Model ◽  
Lattice Qcd ◽  
The Standard Model ◽  
B Mixing

scholarly journals NEUTRINO MAGNETIC MOMENTS AND MINIMAL SUPERSYMMETRIC SO(10) MODEL

2004 ◽  
Vol 19 (28) ◽  
pp. 4825-4833 ◽  
Author(s):  
TAKESHI FUKUYAMA ◽  
TATSURU KIKUCHI ◽  
NOBUCHIKA OKADA
Keyword(s):  
Standard Model ◽  
Neutrino Mass ◽  
Mass Matrix ◽  
Magnetic Moments ◽  
Matrix Elements ◽  
Mass Matrices ◽  
The Standard Model ◽  
Order Of Magnitude ◽  
Majorana Neutrinos ◽  
Soft Supersymmetry Breaking

We examine supersymmetric contributions to transition magnetic moments of Majorana neutrinos. We first give the general formula for it. In concrete evaluations, informations of neutrino mass matrix elements including CP phases are necessary. Using unambiguously determined neutrino mass matrices in recently proposed minimal supersymmetric SO (10) model, the transition magnetic moments are calculated. The resultant neutrino magnetic moments with the input soft supersymmetry breaking masses being of order 1 TeV are found to be roughly an order of magnitude larger than those calculated in the standard model extended to incorporate the see-saw mechanism.

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