scholarly journals On J/ψ and Υ Transverse Momentum Distributions in High Energy Collisions

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Bao-Chun Li ◽  
Ting Bai ◽  
Yuan-Yuan Guo ◽  
Fu-Hu Liu
Keyword(s):  
Transverse Momentum ◽  
Particle Production ◽  
High Energy ◽  
Energy Collision ◽  
Collision System ◽  
High Energy Collision ◽  
Final State ◽  
Momentum Distributions ◽  
High Energy Collisions ◽  
Good Agreement

The transverse momentum distributions of final-state particles are very important for high energy collision physics. In this work, we investigate J/ψ and Υ meson distributions in the framework of a particle-production source, where Tsallis statistics are consistently incorporated. The results are in good agreement with the experimental data in p-p and p-Pb collisions at LHC energies. The temperature of the emission source and the nonequilibrium degree of the collision system are extracted.

scholarly journals Transverse Momentum Distributions of Final-State Particles Produced in Soft Excitation Process in High Energy Collisions

2013 ◽  
Vol 2013 ◽  
pp. 1-15 ◽  
Author(s):  
Fu-Hu Liu ◽  
Ya-Hui Chen ◽  
Hua-Rong Wei ◽  
Bao-Chun Li
Keyword(s):  
Transverse Momentum ◽  
Quantum Effect ◽  
Hadron Collider ◽  
Heavy Ion ◽  
High Energy ◽  
Ideal Gas ◽  
Relativistic Heavy Ion Collider ◽  
Final State ◽  
Momentum Distributions ◽  
High Energy Collisions

Transverse momentum distributions of final-state particles produced in soft process in proton-proton (pp) and nucleus-nucleus (AA) collisions at Relativistic Heavy Ion Collider (RHIC) and Large Hadron Collider (LHC) energies are studied by using a multisource thermal model. Each source in the model is treated as a relativistic and quantum ideal gas. Because the quantum effect can be neglected in investigation on the transverse momentum distribution in high energy collisions, we consider only the relativistic effect. The concerned distribution is finally described by the Boltzmann or two-component Boltzmann distribution. Our modeling results are in agreement with available experimental data.

Transverse-Momentum Distributions in High-Energy Collisions

1973 ◽  
Vol 7 (1) ◽  
pp. 133-139
Author(s):  
L. M. Saunders ◽  
Davison E. Soper
Keyword(s):  
Transverse Momentum ◽  
High Energy ◽  
Momentum Distributions ◽  
High Energy Collisions

scholarly journals On Particle Production in Lead-Gold Collision and Azimuthal Anisotropy at Top SPS Energy

2014 ◽  
Vol 2014 ◽  
pp. 1-5
Author(s):  
Bao-Chun Li ◽  
Zhao Zhang
Keyword(s):  
Transverse Momentum ◽  
Thermal Model ◽  
Particle Production ◽  
Elliptic Flow ◽  
High Energy ◽  
Azimuthal Anisotropy ◽  
Evolution Process ◽  
High Energy Collisions

In a multisource thermal model, we analyze the dependence of elliptic flowv2on the transverse momentumPT. The model results are compared with the data ofπ-,KS0,p, andΛmeasured in Pb + Au collisions at top SPS energy, 17.3 GeV. It is found that the azimuthal anisotropy in the evolution process of high-energy collisions is correlated highly to the number of participant nucleons.

Estimation of High Energy Collision Response for Jacket Structures

2015 ◽  
Author(s):  
Gabriele Notaro ◽  
Atle Johansen ◽  
Stine Myhre Selås ◽  
Terje Nybø
Keyword(s):  
High Energy ◽  
Offshore Structures ◽  
Energy Collision ◽  
Offshore Structure ◽  
High Energy Collision ◽  
Collision Response ◽  
Non Linear ◽  
Jacket Structures ◽  
Deformable Bodies ◽  
High Energy Collisions

This paper presents a procedure for evaluating the collision response of fixed offshore structures exposed to high energy collisions with Offshore Service Vessels (OSV) or other floating units. A combination of traditional non-linear frame analyses for screening purposes and more detailed non-linear FE analyses using an explicit code is proposed. In the detailed integrated FE analyses, both the fixed offshore structure and the impacting vessel are explicitly modeled as deformable bodies. The progressive changes in contact and the resistance of both deforming objects are fully accounted for, enabling for more accurate results compared to methods where the resistances of the two objects are assessed separately. Results from case studies are shown. The calculated resistances for the striking objects are compared to the load-indentation curves presented in DNV-RP-C204 [1] and NORSOK N-004 [2].

Particle production in central Pb–Pb collisions at high energy

2002 ◽  
Vol 80 (8) ◽  
pp. 883-891
Author(s):  
F -H Liu
Keyword(s):  
Experimental Data ◽  
Transverse Momentum ◽  
Particle Production ◽  
High Energy ◽  
Recent Experimental Data ◽  
Na49 Collaboration ◽  
Momentum Distributions ◽  
Cylinder Model

The rapidity and transverse-momentum distributions of particles produced in central Pb–Pb collisions at high energy are analyzed by the thermalized cylinder model. The calculated results are compared and found to be in agreement with the recent experimental data of the NA49 Collaboration. PACS Nos.: 25.75-q, 24.10Pa

UNIFIED DESCRIPTION OF (PSEUDO)RAPIDITY DISTRIBUTIONS OF FINAL-STATE PARTICLES PRODUCED IN COLLISIONS AT RELATIVISTIC ENERGIES

2008 ◽  
Vol 23 (05) ◽  
pp. 337-346 ◽  
Author(s):  
FU-HU LIU
Keyword(s):  
Particle Production ◽  
Heavy Ion ◽  
High Energy ◽  
Final State ◽  
Intermediate Energies ◽  
Rapidity Distributions ◽  
Very High Energy ◽  
Unified Description ◽  
Very High ◽  
Good Agreement

The paper presents a fit to rapidity distributions of various hadrons measured in heavy-ion experiments at different beam energies. As examples distributions of various identified hadron species measured at GSI SIS and at BNL RHIC are presented and very good agreement between the fit and the data is found. The basis of the fits is a simple Feynman gas model, namely the two-cylinder gas model, for secondary particle production. The model assumption is that there are projectile and target cylinders that are the sources of emitted particles. The conjecture is that at low and intermediate energies the cylinders overlap totally, at high energy the cylinders overlap partly, while at very high energy a gap appears between the two cylinders.

scholarly journals EVENTS WITH ISOLATED CHARGED LEPTONS AND LARGE MISSING TRANSVERSE MOMENTUM AT HERA

2004 ◽  
Vol 19 (25) ◽  
pp. 1881-1902 ◽  
Author(s):  
TANCREDI CARLI ◽  
DOMINIK DANNHEIM ◽  
LORENZO BELLAGAMBA
Keyword(s):  
Transverse Momentum ◽  
Zeus Collaboration ◽  
Tau Leptons ◽  
High Luminosity ◽  
Final State ◽  
Missing Transverse Momentum ◽  
State Formula ◽  
Charged Leptons ◽  
Good Agreement ◽  
Event Topology

Striking events with isolated charged leptons, large missing transverse momentum and large transverse momentum of the hadronic final state [Formula: see text] were observed at the electron proton collider HERA in a data sample corresponding to an integrated luminosity of about 130 pb-1. The H1 collaboration observed 11 events with isolated electrons or muons and with [Formula: see text]. Only 3.4±0.6 events were expected from Standard Model (SM) processes. Six of these events have [Formula: see text], while 1.3±0.3 events were expected. The ZEUS collaboration observed good agreement with the SM. However, ZEUS found two events with a similar event topology, but tau leptons instead of electrons or muons in the final state. Only 0.2±0.05 events were expected from SM processes. For various hypotheses, the compatibility of the experimental results was investigated with respect to the SM and with respect to possible explanations beyond the SM. Prospects for the high-luminosity HERA-II data taking period are given.

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