2016/11/30 by Ya-Hui Chen, Fu-Hu Liu, Roy A. Lacey
Physics and Astronomy · #Atlas (anatomy) #Event (particle physics) #Hadron #High-Energy Particle Collisions Research #Large Hadron Collider #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quark #Quark–gluon plasma #Rapidity #Spectral line #Superposition principle #hep-ex #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.1088/1674-1137/42/3/033101
published as Chinese Physics C 42, 033101 (2018) (17 pages) · 18 pages, 9 figures. Chinese Physics C, accepted
openalex created_date 2016/12/08 · arxiv created 2018/01/05 · arxiv updated 2018/01/25 · openalex publication_date 2018/02/01 · openalex updated_date 2026/08/06
We analyze the transverse momentum ( p T ) and rapidity ( y ) spectra of top quark pairs, hadronic top quarks, and top quarks produced in proton-proton (pp) collisions at center-of-mass energy TeV. For spectra, we use the superposition of the inverse power-law suggested by the QCD (quantum chromodynamics) calculus and the Erlang distribution resulting from a multisource thermal model. For y spectra, we use the two-component Gaussian function resulting from the revised Landau hydrodynamic model. The modelling results are in agreement with the experimental data measured at the detector level, in the fiducial phase-space, and in the full phase-space by the ATLAS Collaboration at the Large Hadron Collider (LHC). Based on the parameter values extracted from p T and y spectra, the event patterns in three-dimensional velocity ( β x - β y - β z ), momentum ( p x - p y - p z ), and rapidity ( y 1 - y 2 - y ) spaces are obtained, and the probability distributions of these components are also obtained.