6 papers
The vector form factor of the pion from unitarity and analyticity: a model-independent approach
A. Pich, J. Portoles
We study a model-independent parameterization of the vector pion form factor that arises from the constraints of analyticity and unitarity. Our description should be suitable up to…
Tau Physics
A. Pich
The pure leptonic or semileptonic character of tau decays makes them a good laboratory to test the structure of the weak currents and the universality of their couplings to the gau…
Magnetic Moments of Heavy Baryons
M. C. Banuls, I. Scimemi, J. Bernabeu +2
First non-trivial chiral corrections to the magnetic moments of triplet (T) and sextet (S^(*)) heavy baryons are calculated using Heavy Hadron Chiral Perturbation Theory. Since mag…
Tau Physics
A. Pich
The pure leptonic or semileptonic character of tau decays makes them a good laboratory to test the structure of the weak currents and the universality of their couplings to the gau…
Constraining new interactions with leptonic tau decays
A. Pich, J. P. Silva
The recent measurements of the Michel parameters in tau decays enable, for the first time, a thorough analysis of the leptonic sector. In general, in models beyond the Standard Mod…
The Chiral Anomaly in Non-Leptonic Weak Interactions
J. Bijnens, G. Ecker, A. Pich
The interplay between the chiral anomaly and the non-leptonic weak Hamiltonian is studied. The structure of the corresponding effective Lagrangian of odd intrinsic parity is establ…