Baryonic content of the pion Sanchez-Puertas, Pablo Ruiz Arriola, Enrique Broniowski, Wojciech The baryon form factor of charged pions arises since isospin symmetry is broken. We obtain estimates for this basic property in two phenomenological ways: from simple constituent quark models with unequal up and down quark masses, and from fitting to e+e−→π+π−data. All our methods yield a positive π+baryon mean square radius of (0.03 −0.04fm)2. Hence, a picture emerges where the outer region has a net baryon, and the inner region a net antibaryon density, both compensating each other such that the total baryon number is zero. For π−the effect is opposite. 2021-10-25T08:15:38Z 2021-10-25T08:15:38Z 2021-09-27 journal article P. Sanchez-Puertas, E. Ruiz Arriola and W. Broniowski. Baryonic content of the pion. Physics Letters B 822 (2021) 136680 [https://doi.org/10.1016/j.physletb.2021.136680] http://hdl.handle.net/10481/71069 10.1016/j.physletb.2021.136680 eng info:eu-repo/grantAgreement/EC/H2020/754510 info:eu-repo/grantAgreement/EC/H2020/824093 http://creativecommons.org/licenses/by/3.0/es/ open access Atribución 3.0 España Elsevier