Measurements of $$\pi ^\pm $$ <math><msup><mi>π</mi><mo>±</mo></msup></math> , K$$^\pm $$ <math><msup><mrow></mrow><mo>±</mo></msup></math> , p and $${\bar{\text {p}}}$$ <math><mover><mrow><mtext>p</mtext></mrow><mrow><mo>¯</mo></mrow></mover></math> spectra in proton-proton interactions at 20, 31, 40, 80 and 158 $$\text{ GeV }/c$$ <math><mrow><mspace width='0.333333em'></mspace><mtext>GeV</mtext><mspace width='0.333333em'></mspace><mo>/</mo><mi>c</mi></mrow></math> with the NA61/SHINE spectrometer at the CERN SPS

Measurements of inclusive spectra and mean multiplicities of $$\pi ^\pm $$ π&#177; , K$$^\pm $$ &#177; , p and $${\bar{\text {p}}}$$ p&#175; produced in inelastic p + p interactions at incident projectile momenta of 20, 31, 40, 80 and 158 $$\text{ GeV }/c$$ GeV/c ($$\sqrt{s} = $$ s= 6.3, 7.7, 8.8, 12.3 and 17.3 $$\text{ GeV }$$ GeV , respectively) were performed at the CERN Super Proton Synchrotron using the large acceptance NA61/SHINE hadron spectrometer. Spectra are presented as function of rapidity and transverse momentum and are compared to predictions of current models. The measurements serve as the baseline in the NA61/SHINE study of the properties of the onset of deconfinement and search for the critical point of strongly interacting matter.