Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-11-16
Physics
High Energy Physics
High Energy Physics - Phenomenology
9 pages, 2 figures, to be published in the proceedings of the Workshop: Exclusive Processes at High Momentum Transfer, Newport
Scientific paper
Hard scattering to a three cluster final state is suggested as a method to probe configurations in hadrons containing small size color singlet cluster and a residual quark-gluon system of a finite mass. Examples of such processes include $e + N \to e+ p +M_X (\Lambda+M_X'), p+p \to p+p+M_X(p+\Lambda+M_X')$ where $M_X(M_X')$ could be a pion(kaon) or other state of finite mass which does not increase with momentum transfer ($Q^2$). We argue that different models of the nucleon may lead to very different qualitative predictions for the spectrum of states $M_X$. We find that in the pion model of nonperturbative $q \bar q$ sea in a nucleon the cross section of these reactions is comparable to the cross section of the corresponding two-body reaction. Studies of these reactions are feasible using both fixed target detectors (EVA at BNL, HERMES at DESY) and collider detectors with a good acceptance in the forward direction.
Frankfurt Leonid L.
Polyakov Maxim V.
Strikman Mark
Zhalov D.
Zhalov Michael
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