Recombination mechanism for D0-meson production and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.svg"><mml:msup><mml:mrow><mml:mi>D</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup><mml:mo linebreak="goodbreak" linebreakstyle="after">−</mml:mo><mml:mover accent="true"><mml:mrow><mml:msup><mml:mrow><mml:mi>D</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mo>‾</mml:mo></mml:mover></mml:math> production asymmetry in …

We discuss production of neutral $D$ mesons in proton-proton collisions at the LHC (fixed target mode) framework BJM recombination model. present rapidity and transverse momentum distributions compare contribution to dominant gluon-gluon fusion mechanism. Both direct production, as dictated by matrix element, fragmentation associated $c$ or $\bar c$ are included. The latter mechanism generates with smaller rapidities than those produced directly. calculate $D^0 + {\bar D^{0}}$ meson relevant for fixed $p\!+\!\!^{4}\!H\!e$ $\sqrt{s}$ = 86.6 GeV well $p\!+\!\!^{20}\!N\!e$ 69 GeV. component is consistent LHCb data addition results asymmetry. asymmetries $D^{0}\!-\!\bar{D^{0}}$ a function shown cancellation terms $c/{\bar c}$ discussed.