Can one probe the structure function of the pomeron?

We discuss whether the diffractive structure functions defined by current experiments at HERA are indeed probing the partonic structure function of the pomeron. We observe that the {\it pseudorapidity} cuts commonly employed require that the struck parton in the pomeron be far off mass shell in size...

Descripción completa

Detalles Bibliográficos
Autores principales: Ellis, John R., Ross, Graham G.
Lenguaje:eng
Publicado: 1996
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(96)00585-0
http://cds.cern.ch/record/301580
_version_ 1780889523084853248
author Ellis, John R.
Ross, Graham G.
author_facet Ellis, John R.
Ross, Graham G.
author_sort Ellis, John R.
collection CERN
description We discuss whether the diffractive structure functions defined by current experiments at HERA are indeed probing the partonic structure function of the pomeron. We observe that the {\it pseudorapidity} cuts commonly employed require that the struck parton in the pomeron be far off mass shell in sizeable regions of parameter space. As a result an interpretation in terms of constituent partons within the pomeron is inadequate. One may nevertheless use a partonic description for the {\it amplitude} for virtual photon-pomeron scattering to compute a diffractive structure function for pseudorapidity gap events. The resulting form may have significant scaling violation.
id cern-301580
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1996
record_format invenio
spelling cern-3015802023-07-18T02:44:47Zdoi:10.1016/0370-2693(96)00585-0http://cds.cern.ch/record/301580engEllis, John R.Ross, Graham G.Can one probe the structure function of the pomeron?Particle Physics - PhenomenologyWe discuss whether the diffractive structure functions defined by current experiments at HERA are indeed probing the partonic structure function of the pomeron. We observe that the {\it pseudorapidity} cuts commonly employed require that the struck parton in the pomeron be far off mass shell in sizeable regions of parameter space. As a result an interpretation in terms of constituent partons within the pomeron is inadequate. One may nevertheless use a partonic description for the {\it amplitude} for virtual photon-pomeron scattering to compute a diffractive structure function for pseudorapidity gap events. The resulting form may have significant scaling violation.We discuss whether the diffractive structure functions defined by current experiments at HERA are indeed probing the partonic structure function of the pomeron. We observe that the {\it pseudorapidity} cuts commonly employed require that the struck parton in the pomeron be far off mass shell in sizeable regions of parameter space. As a result an interpretation in terms of constituent partons within the pomeron is inadequate. One may nevertheless use a partonic description for the {\it amplitude} for virtual photon-pomeron scattering to compute a diffractive structure function for pseudorapidity gap events. The resulting form may have significant scaling violation.We discuss whether the diffractive structure functions defined by current experiments at HERA are indeed probing the partonic structure function of the pomeron. We observe that the pseudorapidity cuts commonly employed require that the struck parton in the pomeron be far off mass shell in sizeable regions of parameter space. As a result an interpretation in terms of constituent partons within the pomeron is inadequate. One may nevertheless use a partonic description for the amplitude for virtual photon-pomeron scattering to compute a diffractive structure function for pseudorapidity gap events. The resulting form may have significant scaling violation.We discuss whether the diffractive structure functions defined by current experiments at HERA are indeed probing the partonic structure function of the pomeron. We observe that the {\it pseudorapidity} cuts commonly employed require that the struck parton in the pomeron be far off mass shell in sizeable regions of parameter space. As a result an interpretation in terms of constituent partons within the pomeron is inadequate. One may nevertheless use a partonic description for the {\it amplitude} for virtual photon-pomeron scattering to compute a diffractive structure function for pseudorapidity gap events. The resulting form may have significant scaling violation.We discuss whether the diffractive structure functions defined by current experiments at HERA are indeed probing the partonic structure function of the pomeron. We observe that the pseudorapidity cuts commonly employed require that the struck parton in the pomeron be far off mass shell in sizeable regions of parameter space. As a result an interpretation in terms of constituent partons within the pomeron is inadequate. One may nevertheless use a partonic description for the amplitude for virtual photon-pomeron scattering to compute a diffractive structure function for pseudorapidity gap events. The resulting form may have significant scaling violation.hep-ph/9604360CERN-TH-96-101OUTP-96-20-PCERN-TH-96-101OUTP-96-20-Poai:cds.cern.ch:3015801996-04-19
spellingShingle Particle Physics - Phenomenology
Ellis, John R.
Ross, Graham G.
Can one probe the structure function of the pomeron?
title Can one probe the structure function of the pomeron?
title_full Can one probe the structure function of the pomeron?
title_fullStr Can one probe the structure function of the pomeron?
title_full_unstemmed Can one probe the structure function of the pomeron?
title_short Can one probe the structure function of the pomeron?
title_sort can one probe the structure function of the pomeron?
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/0370-2693(96)00585-0
http://cds.cern.ch/record/301580
work_keys_str_mv AT ellisjohnr canoneprobethestructurefunctionofthepomeron
AT rossgrahamg canoneprobethestructurefunctionofthepomeron

Ejemplares similares