Speakers
Description
We discuss production of $D$ ($D^+, D^-, D^0, {\bar D}^0$) mesons in the proton proton collisions at the LHC (both collider mode and fixed target mode) in the framework of the BJM recombination model. We present rapidity and transverse momentum distributions of $D$ mesons and compare the recombination contribution to the dominant gluon-gluon fusion contribution and intrinsic charm contribution. The differential distributions corresponding to recombination are similar to those of the intrinsic charm. Both the direct production, as dictated by the matrix element, and fragmentation of the associated $c$ or $\bar c$ are included. The latter mechanism generates $D$ mesons with smaller rapidities than those produced directly. Several asymmetries in $D {\bar D}$ production as a function of rapidity and transverse momentum are shown and the cancellation of the both mechanisms is discussed. We discuss also production asymmetries of $D$ mesons at low (fixed target) experiment and $\nu_{\mu}$ and ${\overline \nu}_{\mu}$ originating from the semileptonic/leptonic decays of the $D$ mesons. Energy distributions of neutrinos are shown for the FASER-$\nu$ detector.
[1] R. Maciuła and A. Szczurek, a paper in preparation.
| Submitted on behalf of a Collaboration? | No |
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