Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-08-04
Phys.Rev.D80:074014,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
34 pages, 9 figures
Scientific paper
10.1103/PhysRevD.80.074014
Hadrons are composite objects made of quarks and gluons, and during a collision one can have several elementary interactions between the constituents. These elementary interactions, using an appropriate theoretical framework, can be related to the total and elastic cross sections. At high c.m. energy it also becomes possible to identify experimentally a high pt subset of the parton interactions and to study their multiplicity distribution. Predictions of the multiple interactions rates are difficult because in principle one needs to have a knowledge of the correlated Parton Distribution Functions that describe the probability to find simultaneously different partons in different elements of phase space. In this work we address this question and suggest a method to describe effectively the fluctuations in the instantaneous configuration of a colliding hadron. This problem is intimately related to the origin of the inelastic diffractive processes. We present a new method to include the diffractive cross section in an eikonal formalism that is equivalent to a multi-channel eikonal. We compare with data and present an extrapolation to higher energy.
Lipari Paolo
Lusignoli Maurizio
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