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Baryonic form factors of the pion and kaon in a chiral quark model
Wojciech Broniowski, Enrique Ruiz Arriola, Pablo Sanchez-Puertas
The baryonic form factor of charged pions is studied in detail in the Nambu--Jona-Lasinio model with constituent quarks, where the spontaneously broken chiral symmetry is the key d…
Axial-vector exchange contribution to the Hyperfine Splitting
Alejandro Miranda, Pablo Roig, Pablo Sanchez-Puertas
We revisit the contribution of axial-vector mesons to the hyperfine splitting of muonic hydrogen. We focus our attention on the doubly-virtual asymptotic behavior of the relevant f…
Baryonic content of the pion
Pablo Sanchez-Puertas, Enrique Ruiz Arriola, Wojciech Broniowski
The baryon form factor of charged pions arises since isospin symmetry is broken with unequal up and down quark masses, , as well as electromagnetic effects. We obtain esti…