It is demonstrated that measurements of photon asymmetry in the γn → K-K+n reaction, can most likely determine the parity of the newly discovered Θ+ pentaquark. We predict that if the parity of Θ+ is positive, the photon ...

It is demonstrated that measurements of photon asymmetry in the γn → K-K+n reaction, can most likely determine the parity of the newly discovered Θ+ pentaquark. We predict that if the parity of Θ+ is positive, the photon ...

We investigate a charge asymmetry in tt¯γtt¯γ production at the LHC that provides complementary information to the measured asymmetries in tt¯tt¯ production. We estimate the experimental uncertainty in its measurement at ...