scholarly journals Kaon mixing matrix elements from beyond-the-standard-model operators in staggered chiral perturbation theory

2012 ◽  
Vol 85 (7) ◽  
Author(s):  
Jon A. Bailey ◽  
Hyung-Jin Kim ◽  
Weonjong Lee ◽  
Stephen R. Sharpe
Keyword(s):  
Perturbation Theory ◽  
Standard Model ◽  
Chiral Perturbation Theory ◽  
Beyond The Standard Model ◽  
Matrix Elements ◽  
Chiral Perturbation ◽  
The Standard Model ◽  
Mixing Matrix

scholarly journals CP VIOLATION IN KAON DECAYS

1998 ◽  
Vol 13 (01) ◽  
pp. 1-93 ◽  
Author(s):  
GIANCARLO D'AMBROSIO ◽  
GINO ISIDORI
Keyword(s):  
Perturbation Theory ◽  
Cp Violation ◽  
Standard Model ◽  
Chiral Perturbation Theory ◽  
Chiral Perturbation ◽  
Kaon Decays ◽  
The Standard Model ◽  
Model Predictions ◽  
Effective Hamiltonians

We review the Standard Model predictions of CP violation in kaon decays. We present an elementary introduction to Chiral Perturbation Theory, four-quark effective Hamiltonians and the relation among them. Particular attention is devoted to K→3π, K→ 2πγ and [Formula: see text] decays.

scholarly journals BSM Kaon Mixing at the Physical Point

2018 ◽  
Vol 175 ◽  
pp. 13010 ◽  
Author(s):  
Peter Boyle ◽  
Nicolas Garron ◽  
Julia Kettle ◽  
Ava Khamseh ◽  
Justus Tobias Tsang
Keyword(s):  
Domain Wall ◽  
Standard Model ◽  
Lattice Qcd ◽  
Pion Mass ◽  
Beyond The Standard Model ◽  
Matrix Elements ◽  
Physical Point ◽  
Gauge Action ◽  
The Standard Model ◽  
Mixing Matrix

We present a progress update on the RBC-UKQCD calculation of beyond the standard model (BSM) kaon mixing matrix elements at the physical point. Simulations are performed using 2+1 flavour domain wall lattice QCD with the Iwasaki gauge action at 3 lattice spacings and with pion masses ranging from 430 MeV to the physical pion mass.

scholarly journals New series representations for the two-loop massive sunset diagram

2020 ◽  
Vol 80 (7) ◽  
Author(s):  
B. Ananthanarayan ◽  
Samuel Friot ◽  
Shayan Ghosh
Keyword(s):  
Perturbation Theory ◽  
Standard Model ◽  
Analytic Continuation ◽  
Chiral Perturbation Theory ◽  
Convergent Series ◽  
Regions Of Interest ◽  
External Momentum ◽  
Chiral Perturbation ◽  
Physical Problems ◽  
Series Representations

Abstract We derive new convergent series representations for the two-loop sunset diagram with three different propagator masses $$m_1,\, m_2$$m1,m2 and $$m_3$$m3 and external momentum p by techniques of analytic continuation on a well-known triple series that corresponds to the Lauricella $$F_C^{(3)}$$FC(3) function. The convergence regions of the new series contain regions of interest to physical problems. These include some ranges of masses and squared external momentum values which make them useful from Chiral Perturbation Theory to some regions of the parameter space of the Minimal Supersymmetric Standard Model. The analytic continuation results presented for the Lauricella series could be used in other settings as well.

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.

Sign in / Sign up

Export Citation Format

Share Document