Search results for "p-Pb"

showing 3 items of 23 documents

Performance of the ALICE experiment at the CERN LHC

2014

ALICE is the heavy-ion experiment at the CERN Large Hadron Collider. The experiment continuously took data during the first physics campaign of the machine from fall 2009 until early 2013, using proton and lead-ion beams. In this paper we describe the running environment and the data handling procedures, and discuss the performance of the ALICE detectors and analysis methods for various physics observables.

p-p and Pb-Pb and p-Pb collisions at the LHCPhysics::Instrumentation and Detectors01 natural sciences07.05.-tParticle identificationHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)ALICEData acquisition29.40.-nAtomic and Molecular Physics[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Nuclear Experiment (nucl-ex)Nuclear ExperimentNuclear ExperimentAnalysis methodPhysicsLarge Hadron ColliderLHC; ALICE; heavy-ion collisions; particle detectors.Physicsparticle detectorsAtomic and Molecular Physics and Optics3. Good healthPRIRODNE ZNANOSTI. Fizika.LHCParticle Physics - Experimentheavy-ion collisionNuclear and High Energy PhysicsParticle physicsGroup method of data handlingFOS: Physical sciences[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]Nuclear physicsLHC; ALICE; heavy-ion collisions; particle detectors29.85.-c0103 physical sciences010306 general physicsALICE; Heavy-ion collisions; LHC; Particle detectors; Atomic and Molecular Physics and Optics; Astronomy and Astrophysics; Nuclear and High Energy Physics010308 nuclear & particles physics25.75.-qALICE experimentAstronomy and Astrophysicsheavy-ion collisionsNATURAL SCIENCES. Physics.Physics::Accelerator Physics25.75.-q; 29.40.-n; 29.85.-c; 07.05.-t; LHC ALICE heavy-ion collisions particle detectorsHigh Energy Physics::ExperimentHeavy ionALICE; Heavy-ion collisions; LHC; Particle detectorsand OpticsALICE (propellant)Detector performanceInternational Journal of Modern Physics A
researchProduct

Exclusive J=ψ Photoproduction off Protons in Ultraperipheral p-Pb Collisions at √sNN = 5.02 TeV

2014

photoproduction off protonsultra-peripheral p-Pb collisions
researchProduct

Jet fragmentation transverse momentum distributions in pp and p-Pb collisions at √s, √sNN = 5.02 TeV

2021

Jet fragmentation transverse momentum (jT) distributions are measured in proton-proton (pp) and proton-lead (p-Pb) collisions at √sNN = 5.02 TeV with the ALICE experiment at the LHC. Jets are reconstructed with the ALICE tracking detectors and electromagnetic calorimeter using the anti-kT algorithm with resolution parameter R = 0.4 in the pseudorapidity range |η| < 0.25. The jT values are calculated for charged particles inside a fixed cone with a radius R = 0.4 around the reconstructed jet axis. The measured jT distributions are compared with a variety of parton-shower models. Herwig and Pythia 8 based models describe the data well for the higher jT region, while they underestimate the low…

related to the perturbative component of the fragmentation processthe measured trends are successfully described by all models except for Herwig. For the wide componentHerwig and PYTHIA 8 based models slightly underestimate the data for the higher jet transverse momentum region. These measurements set constraints on models of jet fragmentation and hadronisation.Nuclear and High Energy Physicswhile that of the inverse gamma function increases with increasing jet transverse momentum. For the narrow componentHeavy Ion Experimentsand with a Gaussian for lower jT values (called the “narrow component”)hiukkasfysiikkawhile they underestimate the lower jT region. The jT distributions are further characterised by fitting them with a function composed of an inverse gamma function for higher jT values (called the “wide component”)predominantly connected to the hadronisation process. The width of the Gaussian has only a weak dependence on jet transverse momentumJet fragmentation transverse momentum (jT) distributions are measured in proton-proton (pp) and proton-lead (p-Pb) collisions at √sNN = 5.02 TeV with the ALICE experiment at the LHC. Jets are reconstructed with the ALICE tracking detectors and electromagnetic calorimeter using the anti-kT algorithm with resolution parameter R = 0.4 in the pseudorapidity range |η| < 0.25. The jT values are calculated for charged particles inside a fixed cone with a radius R = 0.4 around the reconstructed jet axis. The measured jT distributions are compared with a variety of parton-shower models. Herwig and PYTHIA 8 based models describe the data well for the higher jT region
researchProduct