Study of photon-tagged jet events in high-energy heavy ion collisions with CMS

The energy loss of fast partons traversing the strongly interacting matter produced in high energy nuclear collisions is one of the most interesting observables to probe the nature of the produced medium. The collisional and radiative energy loss of the partons will modify the fragmentation function...

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Bibliographic Details
Published in:European physical journal. C, Particles and fields (Print) Particles and fields (Print), 2009-06, Vol.61 (4), p.649-658
Main Authors: Chen, Y., Chetluru, V., Lee, Y. J., Loizides, C., Roland, C., Roland, G., Tonjes, M. B., Yilmaz, Y., Yoon, A. S.
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics and Cosmology
Atomic collisions
Elementary Particles
Energy
Energy dissipation
Exact sciences and technology
Fragmentation
Hadrons
Heavy Ions
Ionic collisions
Measurement Science and Instrumentation
Nuclear Energy
Nuclear Physics
Partons
Photons
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Regular Article - Experimental Physics
String Theory
The physics of elementary particles and fields
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Summary:The energy loss of fast partons traversing the strongly interacting matter produced in high energy nuclear collisions is one of the most interesting observables to probe the nature of the produced medium. The collisional and radiative energy loss of the partons will modify the fragmentation functions depending on the path length in the medium. Pb + Pb collisions at  GeV at the LHC will allow detailed measurements of the in-medium modifications of fragmentation functions of parton initiated jets, using the γ -jet channel. Since the photon does not strongly interact with the medium, the initial transverse energy of the fragmenting parton can be related to the photon transverse energy. This in turn allows for precision studies of the fragmentation function underlying these jets.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-009-0972-8