Measurement Of Transverse Momentum Relative To Dijet Systems In Pbpb And Pp Collisions At Sqrts Nn
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| Total Pages | : 48 |
| Release | : 2015 |
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Download Measurement of Transverse Momentum Relative to Dijet Systems in PbPb and $pp$ Collisions at $\sqrt{s_{NN}} Book in PDF, Epub and Kindle
An analysis of dijet events in PbPb and pp collisions is performed to explore the properties of energy loss by partons traveling in a quark-gluon plasma. Data are collected at a nucleon-nucleon center-of-mass energy of 2.76 TeV at the LHC. The distribution of transverse momentum (pT) surrounding dijet systems is measured by selecting charged particles in different ranges of pT and at different angular cones of pseudorapidity and azimuth. The measurement is performed as a function of centrality of the PbPb collisions, the pT asymmetry of the jets in the dijet pair, and the distance parameter R used in the anti-kT jet clustering algorithm. In events with unbalanced dijets, PbPb collisions show an enhanced multiplicity in the hemisphere of the subleading jet, with the pT imbalance compensated by an excess of low-pT particles at large angles from the jet axes.
| Author | : Eric Appelt |
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| Total Pages | : 148 |
| Release | : 2014 |
| Genre | : Collisions (Nuclear physics) |
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Download Measurements of Charged-particle Transverse Momentum Spectra in PbPb Collisions at [square Root Of]nn Book in PDF, Epub and Kindle
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| Release | : 1980 |
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Download Measurement of the Transverse Momenta of Partons, and of Jet Fragmentation as a Function Of. Sqrt. S in P-p Collisions Book in PDF, Epub and Kindle
A large solid angle apparatus consisting of a superconducting solenoid magnet, cylindrical drift chambers and two arrays of lead-glass counters was used to examine particles associated with a high transverse momentum trigger in p-p collisions with three .sqrt. s values at the CERN ISR. The trigger was given by energy deposition in lead-glass arrays centered at 90°. The trigger transverse momentum range covered was 3
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| Release | : 1980 |
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Download Measurement of the Transverse Momenta of Partons and of Jet Fragmentation as a Function Of. Sqrt. S in P-p Collisions Book in PDF, Epub and Kindle
A large solid-angle apparatus consisting of a superconducting solenoid magnet, cylindrical drift chambers, and two arrays of lead-glass counters was used to examine particles associated with a high-transverse momentum trigger in p-p collisions with three .sqrt.s values at the CERN ISR. The trigger was given by energy deposition in lead-glass arrays centered at 90°. The trigger transverse momentum range covered was 3
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| Total Pages | : 26 |
| Release | : 2014 |
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Download Studies of Dijet Transverse Momentum Balance and Pseudorapidity Distributions in PPb Collisions at $\sqrt{s_{\mathrm{NN}}} Book in PDF, Epub and Kindle
Dijet production has been measured in pPb collisions at a nucleon-nucleon centre-of-mass energy of 5.02 TeV. A data sample corresponding to an integrated luminosity of 35 inverse-nanobarns was collected using the Compact Muon Solenoid detector at the Large Hadron Collider. The dijet transverse momentum balance, azimuthal angle correlations, and pseudorapidity distributions are studied as a function of the transverse energy in the forward calorimeters ($E_T^{4\lt.
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| Total Pages | : 36 |
| Release | : 2011 |
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Download Charged Particle Transverse Momentum Spectra in Pp Collisions at Sqrt(s) Book in PDF, Epub and Kindle
The charged particle transverse momentum (pT) spectra are presented for pp collisions at sqrt(s)=0.9 and 7 TeV. The data samples were collected with the CMS detector at the LHC and correspond to integrated luminosities of 231 inverse microbarns and 2.96 inverse picobarns, respectively. Calorimeter-based high-transverse-energy triggers are employed to enhance the statistical reach of the high-pT measurements. The results are compared with both leading-order QCD and with an empirical scaling of measurements at different collision energies using the scaling variable xT = 2 pT/sqrt(s) over the pT range up to 200 GeV/c. Using a combination of xT scaling and direct interpolation at fixed pT, a reference transverse momentum spectrum at sqrt(s)=2.76 TeV is constructed, which can be used for studying high-pT particle suppression in the dense QCD medium produced in heavy-ion collisions at that centre-of-mass energy.
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| Release | : 2017 |
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Download Measurement of Prompt and Nonprompt J/psi Production in Pp and PPb Collisions at Sqrt(s[NN] Book in PDF, Epub and Kindle
This paper reports the measurement of J/psi meson production in proton-proton (pp) and proton-lead (pPb) collisions at a center-of-mass energy per nucleon pair of 5.02 TeV by the CMS experiment at the LHC. The data samples used in the analysis correspond to integrated luminosities of 28 inverse picobarns and 35 inverse nanobarns for pp and pPb collisions, respectively. Prompt and nonprompt J/psi mesons, the latter issuing from the decay of B mesons, are measured in their dimuon decay channels. Differential cross sections are measured in the transverse momentum range of 2
| Author | : Werner-Heisenberg-Institut für Physik, Max-Planck-Institut für Physik und Astrophysik, München |
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| Total Pages | : 15 |
| Release | : 1986 |
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Download A Measurement of (pi)0-production at Large Transverse Momentum in (pi)-p, (pi)+p and Pp Collisions at 300 GeV/c Book in PDF, Epub and Kindle
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| Total Pages | : 15 |
| Release | : 1986 |
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Download A measurement of ... [pi-production] at large transverse momentum in ... [p], ... [p] and pp collisions at 300 GeV/c Book in PDF, Epub and Kindle
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| Release | : 1983 |
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Download Particle Ratios at High Transverse Momentum in Pp Collisions At. Sqrt. S Book in PDF, Epub and Kindle
The production of identified charged particles in pp collisions at .sqrt.s = 63 GeV with an identified high p/sub T/ trigger particle emitted in the central region is studied. The measurements were performed at the CERN ISR using the Axial Field Spectrometer. Trigger particle ratios, sigma(.pi./sup + -/)/ sigma(all/sup + -/), sigma(K/sup + -/) and sigma(p/sup + -/)/sigma(all/sup + -/) are presented for p/sub T/ from 5 GeV/c to 8 GeV/c. In addition sigma(.pi./sup + -/)/sigma(all/sup + -/) is presented in the p/sub T/ region from 2.5 GeV/c to 4.5 GeV/c. The charge compensation in the hemisphere containing the trigger particle is shown to depend strongly on the identity of the trigger particle and on the identity of the associated particles. 13 references.
