Precision measurements of K[sup ±] → π[sup ±]π[sup 0]γ decay at NA48∕2 and search for CP violation

2011 ◽  
Author(s):  
Andrea Bizzeti ◽  
David Armstrong ◽  
Volker Burkert ◽  
Jian-Ping Chen ◽  
Will Detmold ◽  
...  
Keyword(s):  
Cp Violation ◽  
Precision Measurements

scholarly journals Global fits in the Aligned Two-Higgs-Doublet model

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Otto Eberhardt ◽  
Ana Peñuelas Martínez ◽  
Antonio Pich
Keyword(s):  
Cp Violation ◽  
Scalar Potential ◽  
Higgs Doublet ◽  
Precision Measurements ◽  
Mixing Matrix ◽  
Doublet Model ◽  
Global Fit ◽  
Two Higgs Doublet Model ◽  
Electroweak Precision ◽  
Higgs Signal

Abstract We present the results of a global fit to the Aligned Two-Higgs Doublet Model, assuming that there are no new sources of CP violation beyond the quark mixing matrix. We use the most constraining flavour observables, electroweak precision measurements and the available data on Higgs signal strengths and collider searches for heavy scalars, together with the theoretical requirements of perturbativity and positivity of the scalar potential. The combination of all these constraints restricts the values of the scalar masses, the couplings of the scalar potential and the flavour-alignment parameters. The numerical fits have been performed using the open-source HEPfit package.

scholarly journals CHARM: MIXING, CP VIOLATION AND RARE DECAYS AT LHCb

2014 ◽  
Vol 35 ◽  
pp. 1460414
Author(s):  
MICHAEL ALEXANDER ◽  
Keyword(s):  
Cp Violation ◽  
Standard Model ◽  
Rare Decays ◽  
Branching Fractions ◽  
Charm Physics ◽  
Precision Measurements ◽  
Beyond The Standard Model ◽  
Mixing Parameters ◽  
The Standard Model ◽  
Wrong Sign

Recent results on mixing, CP violation and rare decays in charm physics from the LHCb experiment are presented. Study of "wrong-sign" D0 → K+π- decays provides the highest precision measurements to date of the mixing parameters x′2 and y′, and of CP violation in this decay mode. Direct and indirect CP violation in the D0 system are probed to a sensitivity of around 10-3 using D0 → K+K− and D0 → π+π− decays and found to be consistent with zero. Searches for the rare decays [Formula: see text], [Formula: see text] and D0 → μ+μ− find no evidence of signal, but set the best limits on branching fractions to date. Thus, despite many excellent results in charm physics from LHCb, no evidence for physics beyond the Standard Model is found.

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