Measurement Of Neutral Pions And Direct Photons In Copper Copper Collisions At 624 Gev Center Of Mass Energy
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Author |
: Timothy James Hester |
Publisher |
: |
Total Pages |
: 112 |
Release |
: 2012 |
ISBN-10 |
: OCLC:834586298 |
ISBN-13 |
: |
Rating |
: 4/5 (98 Downloads) |
Synopsis Measurement of Neutral Pions and Direct Photons in Copper + Copper Collisions at 62.4 GeV Center of Mass Energy by : Timothy James Hester
Author |
: David Shaw Brown |
Publisher |
: |
Total Pages |
: 610 |
Release |
: 1992 |
ISBN-10 |
: MSU:31293008973186 |
ISBN-13 |
: |
Rating |
: 4/5 (86 Downloads) |
Synopsis A Comparison of High Transverse Momentum Direct Photon and Neutral Pion Events in Negative Pion and Proton-nucleus Collisions at 31.5 GeV Center of Mass Energy by : David Shaw Brown
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: |
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: |
Total Pages |
: |
Release |
: 2014 |
ISBN-10 |
: OCLC:921157778 |
ISBN-13 |
: |
Rating |
: 4/5 (78 Downloads) |
Synopsis Measurement of Elliptic Flow Coefficients and Derivation of Reaction Plane Dependent Efficiency of Isolated Photons and [neutral Pions] in Center-of-mass Pair Energy 200 GeV Au+Au Collisions at RHIC-PHENIX by :
Author |
: |
Publisher |
: |
Total Pages |
: 11 |
Release |
: 1998 |
ISBN-10 |
: OCLC:871245084 |
ISBN-13 |
: |
Rating |
: 4/5 (84 Downloads) |
Synopsis Neutral Pion Production in Nucleus-nucleus Collisions at 158 and 200 GeV/nucleon by :
Two years ago, at the 12th Winter Workshop on Nuclear Dynamics held here in Snowbird, the authors presented WA80 limits on direct photon production in 200-GeV 32S + Au collisions. It was found that the results were consistent (within 1[sigma]) with the absence of an excess of photons over those that can be accounted for by the two-photon decay branches of [pi]° and [eta] mesons and by the small photon contributions from other radiative decays. They are in the process of finalizing the direct-photon production results from collisions of lead nuclei at 158 GeV/nucleon. The author briefly discusses the status of the analysis and gives some preliminary results at the end of this talk. However, most of this presentation is concerned with a very different aspect of the photon measurements: distributions of neutral pions. In contrast to direct photons which probe initial collision conditions, hadrons, such as neutral pions, interact strongly and decouple late in the reaction evolution and, thus, provide information concerning the system at freeze out. Transverse momentum spectra at low and intermediate p{sub T} relate to thermodynamic and hydrodynamic descriptions of the hot, dense systems. In addition, the high-p{sub T} region reflects the hard-scattering regime and may help one understand initial-state particle production by forming a bridge to proton-proton and proton-nucleus results. It follows that it is essential that the [pi]° measurements cover a large p{sub T} range.
Author |
: |
Publisher |
: |
Total Pages |
: 10 |
Release |
: 1996 |
ISBN-10 |
: OCLC:68375159 |
ISBN-13 |
: |
Rating |
: 4/5 (59 Downloads) |
Synopsis Measurement of Direct Photons in 200·A GeV 32S + Au Collisions by :
Two years ago at the 10th Winter Workshop on Nuclear Dynamics, we reported preliminary results from our measurements of photons in reactions of 200·A GeV 32S ions with Au nuclei. The results had been presented earlier at Quark Matter '93. For central collisions we reported a small, but statistically significant, excess of photons over those that can be accounted for by the two-photon decay branches of neutral pions and eta mesons and by the small photon contributions from other radiative decays. This paper is, in a sense, a sequel to the 1994 presentation. Here we present the final WA80 single 'direct' photon results, and we discuss their implications for various theoretical calculations. 13 refs., 2 figs., 1 tab.
Author |
: Lawrence Henry O'Neill |
Publisher |
: |
Total Pages |
: 540 |
Release |
: 1975 |
ISBN-10 |
: STANFORD:36105025665329 |
ISBN-13 |
: |
Rating |
: 4/5 (29 Downloads) |
Synopsis Inclusive Observation of Neutral Pions from Pion-proton Collisions at 14 GeV/c by : Lawrence Henry O'Neill
Author |
: Steven A. Jerger |
Publisher |
: |
Total Pages |
: 392 |
Release |
: 1997 |
ISBN-10 |
: MSU:31293017163522 |
ISBN-13 |
: |
Rating |
: 4/5 (22 Downloads) |
Synopsis Inclusive Direct Photon Production in the Central and Forward Rapidity Regions in Proton-antiproton Collisions at a Center of Mass Energy of 1800 GeV by : Steven A. Jerger
Author |
: Francis A. Cucinotta |
Publisher |
: |
Total Pages |
: 30 |
Release |
: 1998 |
ISBN-10 |
: NASA:31769000630585 |
ISBN-13 |
: |
Rating |
: 4/5 (85 Downloads) |
Synopsis Parameterizations of Pion Energy Spectrum in Nucleon-Nucleon Collisions by : Francis A. Cucinotta
Author |
: Oliver Zaudtke |
Publisher |
: |
Total Pages |
: 238 |
Release |
: 2007 |
ISBN-10 |
: OCLC:227345865 |
ISBN-13 |
: |
Rating |
: 4/5 (65 Downloads) |
Synopsis Measurement of Direct Photon Production and Neutral Pion Double Helicity Asymmetry in Ultra Relativistic P+p Collisions by : Oliver Zaudtke
Author |
: |
Publisher |
: |
Total Pages |
: 16 |
Release |
: 2002 |
ISBN-10 |
: NASA:31769000452162 |
ISBN-13 |
: |
Rating |
: 4/5 (62 Downloads) |
Synopsis A Generalized Weizsacker-Williams Method Applied to Pion Production in Proton-Proton Collisions by :