Analysis of Particle Production at Large Transverse Momentum

Transverse-Momentum-Dependent Gluon Distributions and Semi-inclusive Processes at Hadron Colliders

Abstract We study transverse-momentum-dependent (TMD) gluon distributions and factorization theorems for the gluon-initiated semi-inclusive processes at hadron colliders. Gauge-invariant TMD gluon distributions are defined, and their relations to the integrated (Feynman) parton distributions are explored when the transverse momentum is large. Through explicit calculations, soft-collinear factor...

Production of hadrons with large transverse momentum in DIS at NLO

We compute the order α2 s corrections to the one particle inclusive electroproduction cross section of hadrons with non vanishing transverse momentum. We perform the full calculation analytically, and obtain the expression of the factorized (finite) cross section at this order. We compare our results with H1 data on forward production of π0, and discuss the phenomenological implications of the ...

Particle Production at Large Transverse Momentum in Nucleus-nucleus Collisions*

Based on a multiple hard scattering picture we derived simple relations between inclusive cross sections for large transverse momentum particle production in nucleus-nucleus, nucleon-nucleus and nucleonnucleon scatterings. The relations are compared with the recent data for 1~' production in aa collisions at high energy. Submitted to Physical Review D * Work supported in part by the Department ...

Rapidity and species dependence of particle production at large transverse momentum for d+Au collisions at root S-NN=200 GeV

Bulk matter physics and its future at the Large Hadron Collider

Measurements at low transverse momentum will be performed at the LHC for studying particle production mechanisms in pp and heavy-ion collisions. Some of the experimental capabilities for bulk matter physics are presented, focusing on tracking elements and particle identification. In order to anticipate the study of baryon production for both colliding systems at multi-TeV energies, measurements...

Recent results from BRAHMS

The BRAHMS collaboration ended its data collection program in 2006. We are now well advanced in the analysis of a comprehensive set of data that spans systems ranging in mass from p+p to Au+Au and in energy from √ sNN = 62.4 to 200 GeV. Our analysis has taken two distinct paths: we explore the rapidity dependence of intermediate and high-transverse-momentum, identified-particle production, thus...