Expectations for dihadron correlation measurements extrapolated to 5.5A TeV
- Department of Physics, P. O. Box 35, University of Jyvaeskylae, FI-40014 Jyvaeskylae (Finland) and Helsinki Institute of Physics, P. O. Box 64, University of Helsinki, FI-00014 Helsinki (Finland)
The suppression of high transverse momentum (P{sub T}) inclusive hadron spectra in heavy-ion collisions as compared to the scaled expectation of high P{sub T} hadron production in p-p collisions is the most direct manifestation of the interaction of hard partons with the soft bulk medium produced in heavy-ion collisions which is absent in p-p collisions. Yet the measured nuclear suppression factor R{sub AA} is a very averaged quantity and hence only a limited amount of information about the medium evolution and the nature of the interaction with the medium can be deduced from R{sub AA}. Measurements of hard back-to-back hadron correlations in 200A GeV Au-Au collisions at RHIC have opened a new window to study the energy loss of partons in a medium in a more differential way and for a different distribution of in-medium path lengths than in the case of R{sub AA}. In this work, we present an extrapolation of our results for back-to-back yields at RHIC energies to 5.5 TeV Pb-Pb collisions at the CERN LHC. We also discuss differences and similarities between the measurement at RHIC.
- OSTI ID:
- 21189925
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 77, Issue 4; Other Information: DOI: 10.1103/PhysRevC.77.044905; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ATOM-ATOM COLLISIONS
BROOKHAVEN RHIC
CERN LHC
COLLISIONS
CORRELATIONS
DISTRIBUTION
ENERGY LOSSES
EVOLUTION
EXTRAPOLATION
GEV RANGE
HADRONS
HEAVY ION REACTIONS
INTERACTIONS
LEAD
PARTICLE PRODUCTION
PROTON-PROTON INTERACTIONS
SPECTRA
TEV RANGE 01-10
TRANSVERSE MOMENTUM