Speaker
Matteo Cerutti
(Istituto Nazionale di Fisica Nucleare)
Description
We present a study of strong parity-violating contributions that can be included in inclusive Deep Inelastic Scattering (DIS) off an unpolarized proton target. We show that a non vanishing parity-violating structure function arise even in the case of pure photon exchange, in contrast with standard results.
The size of the additional strong parity-violating term is estimated by fitting available experimental data on electron and positron beam-spin asymmetries, obtaining an improvement in the agreement with respect to Standard Model results.
Primary authors
Alessandro Bacchetta
(Istituto Nazionale di Fisica Nucleare)
Marco Radici
(Istituto Nazionale di Fisica Nucleare)
Matteo Cerutti
(Istituto Nazionale di Fisica Nucleare)
