Estimate of the Hadronic Production of the Doubly Charmed Baryon cc under GM-VFN Scheme
Abstract
Hadronic production of the doubly charmed baryon cc (++cc and +cc) is investigated under the general-mass variable-flavor-number (GM-VFN) scheme. The gluon-gluon fusion mechanism and the intrinsic charm mechanisms, i.e. via the sub-processes g+g(cc)[3S1] 3+c+c, g+g(cc)[1S0]6+c+c; g+c (cc)[3S1] 3+c, g+c (cc)[1S0]6+c and c+c (cc)[3S1] 3+g, c+c (cc)[1S0]6+g, are taken into account in the investigation, where (cc)[3S1] 3 (in color 3) and (cc)[1S0]6 (in color 6) are two possible S-wave configurations of the doubly charmed diquark pair (cc) inside the baryon cc. Numerical results for the production at hadornic colliders LHC and TEVATRON show that both the contributions from the doubly charmed diquark pairs (cc)[1S0]6 and (cc)[3S1] 3 are sizable with the assumption that the two NRQCD matrix elements are equal, and the total contributions from the `intrinsic' charm mechanisms are bigger than those of the gluon-gluon fusion mechanism. For the production in the region of small transverse-momentum pt, the intrinsic mechanisms are dominant over the gluon-gluon fusion mechanism and they can raise the theoretical prediction of the cc by almost one order.
Turn this paper into a full lesson
ArcXiv compiles a staged curriculum from this paper: 8-12 lessons across beginner → advanced, synthesised section guides, visuals, flashcards, a quiz, exercises, and on-demand deep dives per section. Grounded in the abstract, never invented.