"Toward a unified description of both low and high ptparticle production in high energy collisions"

Presented by Jamal Jalilian-Marian, Baruch College, City University of New York

Friday, March 29, 2019, 2:00 pm — Building 510, CFNS Seminar Room 2-38

Inclusive particle production at high p_t is successfully
described by perturbative QCD using collinear factorization formalism
with DGLAP evolution of the parton distribution functions. This
formalism breaks down at small Bjorken x (high energy) due to high gluon
density (gluon saturation) effects. The Color Glass Condensate (CGC)
formalism is an effective action approach to particle production at
small Bjorken x (low p_t) which includes gluon saturation. The CGC
formalism nevertheless breaks down at intermediate/large Bjorken x,
corresponding to the high p_t kinematic region in high energy
collisions. Here we describe the first steps taken towards the
derivation of a new formalism, with the ultimate goal of having a
unified formalism for particle production at both low and high p_t in
high energy hadronic/heavy ion collisions.