Understanding how the interactions between a chromophore and its surrounding protein control the function of a photoactive protein remains a challenge. Here, we present the results of photoelectron spectroscopy measurements and quantum chemistry calculations aimed at investigating how substitution at the coumaryl tail of the photoactive yellow protein chromophore controls competing relaxation p...

In this study, we calculate the pressure of interacting pion gas using Beth–Uhlenbeck approach to relativistic virial expansion with Breit–Wigner phase shifts for σ- and ϱ-meson resonances. The repulsive shift δ02 is taken from quark interchange model Barnes Swanson, which in very good agreement experimental data. work show that cancellation attractive (I = 0) 2) isospin channel contributions s...

We explore further applications of the twist-two quark interference fragmentation functions introduced earlier. We show that semi-inclusive production of two pions in the current fragmentation region in deep inelastic scattering of a longitudinally polarized electron on a longitudinally polarized nucleon can provide a probe of the valence quark spin (or helicity difference) distribution in the ...