Toward an effective centrality trigger in pp collisions at LHC

Details Toward an effective centrality trigger in pp collisions at LHC Toward an effective centrality trigger in pp collisions at LHC

2007-12-19

arxiv.org/abs/0712.3209v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 6 figures

Scientific paper

We investigate the impact of very strong small x gluon fields in colliding nucleons at LHC energies on the interaction of valence quarks. We find that in the range of small impact parameters, which contribute significantly to the production of heavy new particles, several of the valence quarks receive large transverse momenta, exceeding 1 GeV/c. This results in a suppression of leading baryon production and consequently in an additional energy flow to smaller rapidities. We suggest several triggers for centrality in pp collisions which allow one to study the propagation of partons through gluon fields of a strength comparable to the ones encountered in heavy ion collisions at the LHC.

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