Long Range And Short Range Dihadron Angular Correlations In Central Pbpb Collisions At A Nucleon Nucleon Center Of Mass Energy Of 276 Tev
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Total Pages | : 30 |
Release | : 2011 |
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Download Long-range and Short-range Dihadron Angular Correlations in Central PbPb Collisions at a Nucleon-nucleon Center of Mass Energy of 2.76 TeV. Book in PDF, Epub and Kindle
First measurements of dihadron correlations for charged particles are presented for central PbPb collisions at a nucleon-nucleon center-of-mass energy of 2.76 TeV over a broad range in relative pseudorapidity, Delta(eta), and the full range of relative azimuthal angle, Delta(phi). The data were collected with the CMS detector, at the LHC. A broadening of the away-side (Delta(phi) approximately pi) azimuthal correlation is observed at all Delta(eta), as compared to the measurements in pp collisions. Furthermore, long-range dihadron correlations in Delta(eta) are observed for particles with similar phi values. This phenomenon, also known as the "ridge", persists up to at least.
Author | : Betty Abelev |
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Total Pages | : 0 |
Release | : 2013 |
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Download Long-range Angular Correlations on the Near and Away Side in P-Pb Collisions at √sNN Book in PDF, Epub and Kindle
Angular correlations between charged trigger and associated particles are measured by the ALICE detector in p-Pb collisions at a nucleon-nucleon centre-of-mass energy of 5.02 TeV for transverse momentum ranges within 0.5
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Release | : 2012 |
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Download Centrality Dependence of Dihadron Correlations and Azimuthal Anisotropy Harmonics in PbPb Collisions at $\sqrt{s_{NN}} Book in PDF, Epub and Kindle
Measurements from the CMS experiment at the LHC of dihadron correlations for charged particles produced in PbPb collisions at a nucleon-nucleon centre-of-mass energy of 2.76 TeV are presented. The results are reported as a function of the particle transverse momenta (pt) and collision centrality over a broad range in relative pseudorapidity [Delta(eta)] and the full range of relative azimuthal angle [Delta(phi)]. The observed two-dimensional correlation structure in Delta(eta) and Delta(phi) is characterised by a narrow peak at (Delta(eta), Delta(phi)) approximately (0, 0) from jet-like correlations and a long-range structure that persists up to at least.
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Total Pages | : 30 |
Release | : 2015 |
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Download Measurement of Long-range Near-side Two-particle Angular Correlations in Pp Collisions at $\sqrt{s}$ Book in PDF, Epub and Kindle
Our results on two-particle angular correlations for charged particles produced in pp collisions at a center-of-mass energy of 13 TeV are presented. The data were taken with the CMS detector at the LHC and correspond to an integrated luminosity of about 270 nb-1. The correlations are studied over a broad range of pseudorapidity).
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Release | : 2016 |
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Download Pseudorapidity Dependence of Long-range Two-particle Correlations in $p$Pb Collisions at $\sqrt{s_{NN}} Book in PDF, Epub and Kindle
Two-particle correlations in pPb collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV are studied as a function of the pseudorapidity separation (Delta eta) of the particle pair at small relative azimuthal angle (abs(Delta phi)
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Total Pages | : 17 |
Release | : 2015 |
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Download Evidence for Collective Multiparticle Correlations in P-Pb Collisions Book in PDF, Epub and Kindle
The second-order azimuthal anisotropy Fourier harmonics, v2, are obtained in p-Pb and PbPb collisions over a wide pseudorapidity ([eta]) range based on correlations among six or more charged particles. The p-Pb data, corresponding to an integrated luminosity of 35 nb-1, were collected during the 2013 LHC p-Pb run at a nucleon-nucleon center-of-mass energy of 5.02 TeV by the CMS experiment. A sample of semiperipheral PbPb collision data at √sNN=2.76 TeV, corresponding to an integrated luminosity of 2.5 [mu]b-1 and covering a similar range of particle multiplicities as the p-Pb data, is also analyzed for comparison. The six- and eight-particle cumulant and the Lee-Yang zeros methods are used to extract the v2 coefficients, extending previous studies of two- and four-particle correlations. For both the p-Pb and PbPb systems, the v2 values obtained with correlations among more than four particles are consistent with previously published four-particle results. These data support the interpretation of a collective origin for the previously observed long-range (large [Delta][eta]) correlations in both systems. The ratios of v2 values corresponding to correlations including different numbers of particles are compared to theoretical predictions that assume a hydrodynamic behavior of a p-Pb system dominated by fluctuations in the positions of participant nucleons. These results provide new insights into the multiparticle dynamics of collision systems with a very small overlapping region.
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Download Long-Range Near-Side Angular Correlations in Proton-Proton Interactions in CMS. Book in PDF, Epub and Kindle
The CMS Collaboration Results on two-particle angular correlations for charged particles emitted in proton-proton collisions at center of mass energies of 0.9, 2.36 and 7TeV over a broad range of pseudorapidity and azimuthal angle (f) are presented using data collected with the CMS detector at the LHC. Short-range correlations in??, which are studied in minimum bias events, are characterized using a simple independent cluster parameterization in order to quantify their strength (cluster size) and their extent in? (cluster decay width). Long-range azimuthal correlations are studied more differentially as a function of charged particle multiplicity and particle transverse momentum using a 980nb-1 data set at 7TeV. In high multiplicity events, a pronounced structure emerges in the two-dimensional correlation function for particles in intermediate pT's of 1-3GeV/c, 2.0>
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Release | : 2016 |
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Download Observation of Charge-dependent Azimuthal Correlations in PPb Collisions and Its Implication for the Search for the Chiral Magnetic Effect Book in PDF, Epub and Kindle
Charge-dependent azimuthal particle correlations with respect to the second-order event plane in pPb and PbPb collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV have been studied with the CMS experiment at the LHC. The measurement is performed with a three-particle correlation technique, using two particles with the same or opposite charge within the pseudorapidity range abs(eta)
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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Total Pages | : 13 |
Release | : 2014 |
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Download Multiplicity Dependence of Jet-like Two-particle Correlation Structures in P-Pb Collisions at [mml Book in PDF, Epub and Kindle
Two-particle angular correlations between unidentified charged trigger and associated particles are measured by the ALICE detector in p-Pb collisions at a nucleon-nucleon centre-of-mass energy of 5.02 TeV. The transverse-momentum range 0.7