title: Triple Parton Scatterings in High-Energy Proton-Proton Collisions.
abstract: A generic expression to compute triple parton scattering cross sections in high-energy proton-proton (pp) collisions is presented as a function of the corresponding single parton cross sections and the transverse parton profile of the proton encoded in an effective parameter σ_{eff,TPS}. The value of σ_{eff,TPS} is closely related to the similar effective cross section that characterizes double parton scatterings, and amounts to σ_{eff,TPS}=12.5±4.5  mb. Estimates for triple charm (cc[over ¯]) and bottom (bb[over ¯]) production in pp collisions at LHC and FCC energies are presented based on next-to-next-to-leading-order perturbative calculations for single cc[over ¯], bb[over ¯] cross sections. At sqrt[s]≈100  TeV, about 15% of the pp collisions produce three cc[over ¯] pairs from three different parton-parton scatterings.
authors.affiliation: CERN, EP Department, 1211 Geneva, Switzerland.
authors.forename: David
authors.initials: D
authors.lastname: d'Enterria
authors.affiliation: Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia.
authors.forename: Alexander M
authors.initials: AM
authors.lastname: Snigirev