Phenix Results On Centrality Dependence Of Yields And Correlations In D Plus Au Collisions At Root S Nn
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Phenix Results On Centrality Dependence Of Yields And Correlations In D Plus Au Collisions At Root S Nn
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Author :
language : en
Publisher:
Release Date : 2016
Phenix Results On Centrality Dependence Of Yields And Correlations In D Plus Au Collisions At Root 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.
PHENIX has measured the transverse momentum (pT) spectra and two particle angular correlations for high pT particles in d+Au collisions at psNN=200 GeV using the RHIC Year-2008 run data. The azimuthal angle correlations for two particles with a large rapidity gap exhibit a ridge-like structure. Using the pi-0s reconstructed in the EMCal, we have successfully extended the pT reach of the correlation up to 8 GeV/c. We find that the azimuthal anisotropy of hadrons found at low pT persists up to 6 GeV/c with a significant centrality and pT dependence, similar to what was observed in A+A collisions.
Fluctuation And Low Transverse Momentum Correlation Results From Phenix
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Author : J. T. MITCHELL
language : en
Publisher:
Release Date : 2006
Fluctuation And Low Transverse Momentum Correlation Results From Phenix written by J. T. MITCHELL and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
The PHENIX Experiment at the Relativistic Heavy Ion Collider has conducted a survey of fluctuations in charged hadron multiplicity in Au+Au and Cu+Cu collisions at {radical}s{sub NN} = 22, 62, and 200 GeV. A universal power law scaling for multiplicity fluctuations expressed as {sigma}{sup 2}/{mu}{sup 2} is observed as a function of N{sub part} for all species studied that is independent of the transverse momentum range of the measurement. PHENIX has also measured transverse momentum correlation amplitudes in p+p, d+Au, and Au+Au collisions. At low transverse momentum, significant differences in the correlations between the baseline p+p and d+Au data and the Au+Au data are presented.
Pseudorapidity Asymmetry And Centrality Dependence Of Charged Hadron Spectra In D Au Collisions At Sqrt Snn
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Author :
language : en
Publisher:
Release Date : 2005
Pseudorapidity Asymmetry And Centrality Dependence Of Charged Hadron Spectra In D Au Collisions At Sqrt 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 2005 with categories.
The pseudorapidity asymmetry and centrality dependence of charged hadron spectra in d+Au collisions at (square root)s{sub NN} = 200 GeV are presented. The charged particle density at mid-rapidity, its pseudorapidity asymmetry and centrality dependence are reasonably reproduced by a Multi-Phase Transport model, by HIJING, and by the latest calculations in a saturation model. Ratios of transverse momentum spectra between backward and forward pseudorapidity are above unity for p{sub T} below 5 GeV/c. The ratio of central to peripheral spectra in d+Au collisions shows enhancement at 2
Growth Of Long Range Forward Backward Multiplicity Correlations With Centrality In Au Au Collisions At Sqrt Snn
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Author :
language : en
Publisher:
Release Date : 2010
Growth Of Long Range Forward Backward Multiplicity Correlations With Centrality In Au Au Collisions At Sqrt 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 2010 with categories.
Forward-backward multiplicity correlation strengths have been measured with the STAR detector for Au+Au and p+p collisions at (square root)s{sub NN} = 200 GeV. Strong short and long range correlations (LRC) are seen in central Au+Au collisions. The magnitude of these correlations decrease with decreasing centrality until only short range correlations are observed in peripheral Au+Au collisions. Both the Dual Parton Model (DPM) and the Color Glass Condensate (CGC) predict the existence of the long range correlations. In the DPM the fluctuation in the number of elementary (parton) inelastic collisions produces the LRC. In the CGC longitudinal color flux tubes generate the LRC. The data is in qualitative agreement with the predictions from the DPM and indicates the presence of multiple parton interactions.
Centrality Dependence Of Low Momentum Direct Photon Production In Math Mrow Mi Au Mi Mo Mo Mi Au Mi Mrow Math Collisions At Math Mrow Msqrt Msub Mi Mi Mrow Mi Mathvariant
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Author :
language : en
Publisher:
Release Date : 2015
Centrality Dependence Of Low Momentum Direct Photon Production In Math Mrow Mi Au Mi Mo Mo Mi Au Mi Mrow Math Collisions At Math Mrow Msqrt Msub Mi Mi Mrow Mi Mathvariant 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.
The PHENIX experiment at RHIC has measured the centrality dependence of the direct photon yield from Au+Au collisions at √sNN = 200 GeV down to pT = 0.4 GeV/c. Photons are detected via photon conversions to e+e− pairs and an improved technique is applied that minimizes the systematic uncertainties that usually limit direct photon measurements, in particular at low pT . In this paper, we find an excess of direct photons above the Ncoll-scaled yield measured in p+p collisions. This excess yield is well described by an exponential distribution with an inverse slope of about 240 MeV/c in the pT range from 0.6-2.0 GeV/c. Finally, in this study, while the shape of the pT distribution is independent of centrality within the experimental uncertainties, the yield increases rapidly with increasing centrality, scaling approximately with N [alpha] part, where [alpha] = 1.38±0.03(stat)±0.07(syst).
Pion Kaon Correlations In Central Au Au Collisions At Square Root S Sub Nn
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Author :
language : en
Publisher:
Release Date : 2003
Pion Kaon Correlations In Central Au Au Collisions At Square Root S Sub 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 2003 with categories.
Centrality Dependence Of Elliptic Flow Of Multi Strange Hadrons In Au Au Collisions At Snn
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Author :
language : en
Publisher:
Release Date : 2016
Centrality Dependence Of Elliptic Flow Of Multi Strange Hadrons In Au Au Collisions At 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 2016 with categories.
Schweitzerisches Kriegs Recht Dem Publico Er Ffnet Durch Einen Practicirten Secretarium
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Author :
language : en
Publisher:
Release Date : 1704
Schweitzerisches Kriegs Recht Dem Publico Er Ffnet Durch Einen Practicirten Secretarium written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1704 with categories.
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.
Disappearance Of Back To Back High P Sub T Hadron Correlations In Central Au Au Collisions At Square Root S Sub Nn
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Author :
language : en
Publisher:
Release Date : 2002
Disappearance Of Back To Back High P Sub T Hadron Correlations In Central Au Au Collisions At Square Root S Sub 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 2002 with categories.
Azimuthal correlations for large transverse momentum charged hadrons have been measured over a wide pseudo-rapidity range and full azimuth in Au+Au and p+p collisions at = (square root)s{sub NN} = 200 GeV. The small-angle correlations observed in p+p collisions and at all centralities of Au+Au collisions are characteristic of hard-scattering processes already observed in elementary collisions. A strong back-to-back correlation exists for p+p and peripheral Au + Au. In contrast, the back-to-back correlations are reduced considerably in the most central Au+Au collisions, indicating substantial interaction as the hard-scattered partons or their fragmentation products traverse the medium.