Long Range Pseudorapidity Dihadron Correlations In D Au Collisions At U221a Snn
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Long Range Pseudorapidity Dihadron Correlations In D Au Collisions At U221a Snn
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Author :
language : en
Publisher:
Release Date : 2015
Long Range Pseudorapidity Dihadron Correlations In D Au Collisions At U221a Snn written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
Dihadron angular correlations in d + Au collisions at √sNN = 200 GeVare reported as a function of the measured zero-degree calorimeter neutral energy and the forward charged hadron multiplicity in the Au-beam direction. A finite correlated yield is observed at large relative pseudorapidity (? ?) on the near side (id est relative azimuth ? ? ̃0). This correlated yield as a function of ?? appears to scale with the dominant, primarily jet-related, away-side (? ? ̃?) yield. The Fourier coefficients of the ?? correlation, Vn = cosn ?? , have a strong ?? dependence. In addition, it is found that V1 is approximately inversely proportional to the mid-rapidity event multiplicity, while V2 is independent of it with similar magnitude in the forward (d-going) and backward (Au-going) directions.
Long Range Pseudorapidity Dihadron Correlations In D Au Collisions At Arrow Nn
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Author :
language : en
Publisher:
Release Date : 2015
Long Range Pseudorapidity Dihadron Correlations In D Au Collisions At Arrow Nn written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
Dihadron angular correlations in d + Au collisions at [arrow]"NN = 200 GeVare reported as a function of the measured zero-degree calorimeter neutral energy and the forward charged hadron multiplicity in the Au-beam direction. A finite correlated yield is observed at large relative pseudorapidity ([Delta][eta]) on the near side (i.e. relative azimuth [Delta][Phi] ~ 0). This correlated yield as a function of [Delta][eta] appears to scale with the dominant, primarily jet-related, away-side ([Delta][Phi] ~ [pi]) yield. The Fourier coefficients of the [Delta][Phi] correlation, Vn = cosn[Delta][Phi], have a strong [Delta][eta] dependence. In addition, it is found that V1 is approximately inversely proportional to the mid-rapidity event multiplicity, while V2 is independent of it with similar magnitude in the forward (d-going) and backward (Au-going) directions.
Pseudorapidity Dependence Of Long Range Two Particle Correlations In P Pb Collisions At Snn
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Author : CMS Collaboration
language : en
Publisher:
Release Date : 2016
Pseudorapidity Dependence Of Long Range Two Particle Correlations In P Pb Collisions At Snn written by CMS Collaboration and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Isolation Of Flow And Nonflow Correlations By Two And Four Particle Cumulant Measurements Of Azimuthal Harmonics In U221a Snn
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Author :
language : en
Publisher:
Release Date : 2015
Isolation Of Flow And Nonflow Correlations By Two And Four Particle Cumulant Measurements Of Azimuthal Harmonics In U221a Snn written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
A data-driven method was applied to Au+Au collisions at √sNN = 200 GeV made with the STAR detector at RHIC to isolate pseudorapidity distance ??-dependent and ??-independent correlations by using two- and four-particle azimuthal cumulant measurements. We identified a ??-independent component of the correlation, which is dominated by anisotropic flow and flow fluctuations. It was found to be independent of ? within the measured range of pseudorapidity.
Long Range Pseudorapidity Correlations At High Pt In Square Root Nn
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Author : Martin John Michael Codrington
language : en
Publisher:
Release Date : 2012
Long Range Pseudorapidity Correlations At High Pt In Square Root Nn written by Martin John Michael Codrington and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
The Quark Gluon Plasma (QGP) is a form of matter in which quarks and gluons are deconfined, and was suggested to be formed in high-energy heavy-ion collisions. Since the discovery of high-pT hadron suppression in central Au+Au collisions at the Relativistic Heavy Ion Collider (RHIC), and the related discovery of the quenching of the away-side jet in these collisions, the role of jets as key probes of the QGP was re-affirmed. The Solenoidal Tracker At RHIC (STAR) detector system, which is suited for jet studies because of its large solid-angle coverage, has produced a number of interesting jet measurements in recent years, including gamma-jet measurements, attempts at full heavy-ion jet reconstruction, and two-dimensional correlations. A long-range correlation in pseudorapidity (the "Ridge") was studied (with statistical significance) out to pT^trig.
Pseudorapidity Dependence Of Long Range Two Particle Correlations In P Pb Collisions At Sqrt S Nn
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Author :
language : en
Publisher:
Release Date : 2016
Pseudorapidity Dependence Of Long Range Two Particle Correlations In P Pb Collisions At Sqrt S Nn written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
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)
Measurement Of Long Range Pseudorapidity Correlations And Azimuthal Harmonics In Math Mrow Msqrt Msub Mi Mi Mrow Mi N Mi Mi N Mi Mrow Msub Msqrt Mo
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Author :
language : en
Publisher:
Release Date : 2014
Measurement Of Long Range Pseudorapidity Correlations And Azimuthal Harmonics In Math Mrow Msqrt Msub Mi Mi Mrow Mi N Mi Mi N Mi Mrow Msub Msqrt Mo written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
We present measurements of two-particle correlation functions and the first five azimuthal harmonics, v1 to v5, using 28 nb−1 of p+Pb collisions at a nucleon-nucleon center-of-mass energy of √sNN =5.02 TeV measured with the ATLAS detector at the LHC. Significant long-range "ridgelike" correlations are observed for pairs with small relative azimuthal angle (
Long Range Rapidity Correlations And Jet Production In High Energy Nuclear Collisions
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Author :
language : en
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Release Date : 2010
Long Range Rapidity Correlations And Jet Production In High Energy Nuclear Collisions written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
The STAR Collaboration at RHIC presents a systematic study of high transverse momentum charged di-hadron correlations at small azimuthal pair separation [Delta][phi], in d+Au and central Au+Au collisions at √s{sub NN} = 200 GeV. Significant correlated yield for pairs with large longitudinal separation [Delta][eta] is observed in central Au+Au, in contrast to d+Au collisions. The associated yield distribution in [Delta][eta] x [delta][phi] can be decomposed into a narrow jet-like peak at small angular separation which has a similar shape to that found in d+Au collisions, and a component which is narrow in [Delta][phi] and depends only weakly on [Delta][eta], the 'ridge'. Using two systematically independent analyses, finite ridge yield is found to persist for trigger p{sub t} > 6 GeV/c, indicating that it is correlated with jet production. The transverse momentum spectrum of hadrons comprising the ridge is found to be similar to that of bulk particle production in the measured range (2
Measurements Of Elliptic And Triangular Flow In High Multiplicity 3he Au Collisions At U221a Snn
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Author :
language : en
Publisher:
Release Date : 2015
Measurements Of Elliptic And Triangular Flow In High Multiplicity 3he Au Collisions At U221a Snn written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
We present the first measurement of elliptic (v2) and triangular (v3) flow in high-multiplicity 3He+Aucollisions at √sNN=200 GeV. Two-particle correlations, where the particles have a large separation in pseudorapidity, are compared in 3He+Au and in p+p collisions and indicate that collective effects dominate the second and third Fourier components for the correlations observed in the 3He+Ausystem. The collective behavior is quantified in terms of elliptic v2 and triangular v3 anisotropy coefficients measured with respect to their corresponding event planes. The v2 values are comparable to those previously measured in d+Au collisions at the same nucleon-nucleon center-of-mass energy. Comparisons with various theoretical predictions are made, including to models where the hot spots created by the impact of the three 3He nucleons on the Au nucleus expand hydrodynamically to generate the triangular flow. The agreement of these models with data may indicate the formation of low-viscosity quark-gluon plasma even in these small collision systems.
Measurement Of Long Range Near Side Two Particle Angular Correlations In Pp Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2015
Measurement Of Long Range Near Side Two Particle Angular Correlations In Pp Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
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).