Charged multiplicities in pp and AA collisions at LHC

• Published in: The European physical journal. C, Particles and fields Vol. 72; no. 3; pp. 1 - 6
• Main Authors: Capella, A., Ferreiro, E. G.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 01-03-2012; Springer; Springer Nature B.V
• Subjects: Astronomy; Astrophysics and Cosmology; Charged particles; Collisions; Collisions (Nuclear physics); Dependence; Elementary Particles; Exact sciences and technology; Hadrons; Heavy Ions; Measurement Science and Instrumentation; Nuclear Energy; Nuclear Physics; Physics; Physics and Astronomy; Pomerons; Quantum Field Theories; Quantum Field Theory; Regular Article - Theoretical Physics; String Theory; The physics of elementary particles and fields; Toy industry; High Energy Phys; Triple Pomeron Vertex; AuAu Collision; PbPb Collision; Energy Dependence; LHC collider; Energy dependence; Multiplicity; Elementary particles; Shading; Collision energy; Models; Charged particles; Corrections; Mathematical physics; Pomerons
• ISSN: 1434-6044; 1434-6052
• DOI: 10.1140/epjc/s10052-012-1936-y

The mid-rapidity charged particle multiplicities in
pp
and
AA
collisions at LHC energies are described in the framework of a generalized eikonal model with shadowing corrections incorporated in
AA
. We show that the
pp
data require a Pomeron intercept close to 1.2, higher than the conventional one, close to 1.1. An
s
0.11
energy dependence is obtained in the LHC range and beyond. The size and centrality dependence of the
AA
multiplicity at
is reproduced and its energy dependence is predicted.