Direct photon production in high energy hadron collisions
Author | : P.H. Hansen |
Publisher | : |
Total Pages | : 41 |
Release | : 1987 |
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Author | : P.H. Hansen |
Publisher | : |
Total Pages | : 41 |
Release | : 1987 |
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Release | : 2010 |
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Author | : David F. Rentería-Estrada |
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Total Pages | : 0 |
Release | : 2022 |
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Total Pages | : 192 |
Release | : 1997 |
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A study of isolated direct photon production in proton-antiproton collisions at a center of mass energy √s= 1800 Ge V is reported, as measured at the D0 Fermilab Tevatron. Cross sections for the central (0 ≤
Author | : You-Hao Chang |
Publisher | : Springer |
Total Pages | : 107 |
Release | : 2017-01-20 |
Genre | : Science |
ISBN | : 9811038244 |
This book mainly focuses on the study of photon + 3 jets final state in Proton-Proton Collisions at √s = 7TeV, searching for patterns of two (or more) distinct hard scatterings in the same collision, i.e the so-called Double Parton Scattering (DPS). A new method by using Monte Carlo generators was performed and provides higher order corrections to the description of the Single Parton Scattering (SPS) background. Further it is investigated whether additional contributions from DPS can improve the agreement between the measured data and the Monte Carlo predictions. The current theoretical uncertainties related to the SPS background are found to be larger than expectation. At the same time a rich set of DPS-sensitive measurements is reported for possible further interpretation.
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Total Pages | : 15 |
Release | : 2015 |
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The recent results on direct photons and dileptons in high energy heavy ion collisions, obtained particularly at RHIC and LHC are reviewed. The results are new not only in terms of the probes, but also in terms of the precision. We shall discuss the physics learned from the results.
Author | : Cheuk-Yin Wong |
Publisher | : World Scientific Publishing Company Incorporated |
Total Pages | : 516 |
Release | : 1994 |
Genre | : Science |
ISBN | : 9789810202644 |
13. High-energy heavy-ion collisions and quark-gluon plasma. 13.1. Nuclear stopping power and the baryon content. 13.2. Bjorken's estimate of the initial energy density in high-energy nucleus-nucleus collisions. 13.3. Hydrodynamics of the quark-gluon plasma -- 14. Signatures for the quark-gluon plasma (I). 14.1. Dilepton production in the quark-gluon plasma. 14.2. Dilepton production from other processes. 14.3. Spectrum of dileptons -- 15. Signatures for the quark-gluon plasma (II). 15.1. Debye screening in the quark-gluon plasma. 15.2. J/[symbol] suppression in the quark-gluon plasma. 15.3. Experimental information on J/[symbol] production and J/[symbol] suppression. 15.4. J/[symbol] suppression in hadron environment. 15.5. Transverse momentum distribution of J/[symbol] particles -- 16. Signatures for the quark-gluon plasma (III). 16.1. Photon production in the quark-gluon plasma. 16.2. Photon production by quark-antiquark annihilation. 16.3. Photon production by q[symbol] annihilation in the plasma. 16.4. Photon production by the Compton process. 16.5. Photon production in the plasma due to the Compton process. 16.6. Photon production by hadrons. 16.7. Photon production by parton collisions. 16.8. Experimental information on photon production -- 17. Signatures for the quark-gluon plasma (IV). 17.1. The Hanbury-Brown-Twiss effect of intensity interferometry. 17.2. Pion momentum correlations from chaotic sources. 17.3. Coherent and partially coherent sources. 17.4. Experimental information on pion interferometry -- 18. Signatures for the quark-gluon plasma (V). 18.1. Strangeness content in matter at thermal and chemical equilibrium. 18.2. Rate of approach to chemical equilibrium in a quark-gluon plasma. 18.3. Experimental information on strangeness production -- 19. Summary
Author | : M. V. Tokarev |
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Total Pages | : 23 |
Release | : 1998 |
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Author | : Nicolas Schmidt |
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Release | : 2020 |
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Release | : 2008 |
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Direct photon productions in minimum bias d+Cu and d+Au and central Cu+Cu and Au+Au at center of mass energies √s = 62.4 GeV and 200GeV at RHIC are investigated systematically by taking into account jet quenching effect, medium-induced photon bremsstrahlung and jet-photon conversion in the hot QGP as well as known cold nuclear matter effects such as the isospin effect, the Cronin effect, shadowing effect, EMC effect and cold nuclear matter energy loss. It is shown that at high p{sub T} the nuclear modification factor for direct photon R{sub AA}(p{sub T}) is suppressed and dominated by cold nuclear matter effects, and there is no large enhancement due to medium-induced photon bremsstrahlung and jet-photon conversion in the hot QGP. Comparison of numerical simulations with experimental data rules out large Cronin enhancement and incoherent photon emission in medium, though large error bars in currently experimental data can not provide tight constraints on other nuclear matter effects.