1.2k citations · 6.1k across the 107 of their papers we have counts for
5 papers · 1 filter
Constraining the properties of K_{l3} form factors with analyticity and unitarity
Gauhar Abbas, B. Ananthanarayan, Irinel Caprini +1
Bounds on the shape parameters of K_{l3} form factors are investigated in a general model independent framework. Using the method of unitarity bounds for correlators evaluated in p…
Regge analysis of the pi pi scattering amplitude
Irinel Caprini, Gilberto Colangelo, Heinrich Leutwyler
The theoretical predictions for the subtraction constants lead to a very accurate dispersive representation of the pi pi scattering amplitude below 0.8 GeV. The extension of this r…
Implications of unitarity and analyticity for the Dπform factors
B. Ananthanarayan, I. Caprini, I. Sentitemsu Imsong
We consider the vector and scalar form factors of the charm-changing current responsible for the semileptonic decay D\rightarrow πl ν. Using as input dispersion relations and unita…
Expansion functions in perturbative QCD and the determination of
Irinel Caprini, Jan Fischer
The conventional series in powers of the coupling in perturbative QCD have zero radius of convergence and fail to reproduce the singularity of the QCD correlators like the Adler fu…
Implications of the recent high statistics determination of the pion electromagnetic form factor in the timelike region
B. Ananthanarayan, Irinel Caprini, I. Sentitemsu Imsong
The recently evaluated two-pion contribution to the muon g-2 and the phase of the pion electromagnetic form factor in the elastic region, known from ππscattering by Fermi-Watson th…