https://doi.org/10.1140/epjc/s10052-009-0972-8
Regular Article - Experimental Physics
Study of photon-tagged jet events in high-energy heavy ion collisions with CMS
1
MIT, Cambridge, MA, USA
2
University of Illinois, Chicago, IL, USA
3
University of Maryland, College Park, MD, USA
* e-mail: rolandg@mit.edu
Received:
29
August
2008
Revised:
2
February
2009
Published online:
27
March
2009
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.
© Springer-Verlag , 2009
