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Novel hard semiexclusive processes and color singlet clusters in hadrons | | L. Frankfurt
; M.V.Polyakov
; M.Strikman
; D.Zhalov
; M.Zhalov
; | | Date: |
16 Nov 2002 | | Subject: | hep-ph | | Affiliation: | TAU), M.V.Polyakov (Univ. Bochum), M.Strikman (PSU), D.Zhalov (PSU), M.Zhalov (PNPI | | Abstract: | 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 $e + N o e+ p +M_X (Lambda+M_X’), p+p o p+p+M_X(p+Lambda+M_X’)$ 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 $q ar q$ 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. | | Source: | arXiv, hep-ph/0211263 | | Services: | Forum | Review | PDF | Favorites | |
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