skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: phi Photoproduction at CLAS

Abstract

The cross-section for phi meson photoproduction on the proton has been measured at a photon energy E_gamma = 3.6 GeV up to a four-momentum transfer -t = 4 GeV^2. A measurement of the differential cross-section at such high transfers, down to 100 pb/GeV^2, was only made possible thanks to the combination of the 100% duty cycle of CEBAF and the use of the large acceptance detector CLAS. At low four-momentum transfer, the differential cross-section is in agreement with previous measurements and is well accounted for by the exchange of the Pomeron. At large four-momentum transfer, above -t = 1 GeV^2, no previous data exist, and our results support a model where the Pomeron is resolved into its simplest component, two gluons. Taking into account the coupling of these gluons to any quark in the proton and the phi reproduces quite well the dependence in t of our cross-sections.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA
Sponsoring Org.:
USDOE - Office of Energy Research (ER)
OSTI Identifier:
882277
Report Number(s):
JLAB-PHY-00-98; DOE/ER/40150-3864
TRN: US0703457
DOE Contract Number:  
AC05-84ER40150
Resource Type:
Conference
Resource Relation:
Conference: International Workshop on Strange Quarks in Hadrons, Nuclei and Nuclear Matter, 12-13 May 2000, Ohio University, Athens, Ohio
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CROSS SECTIONS; DIFFERENTIAL CROSS SECTIONS; GLUONS; HADRONS; MESONS; NUCLEAR MATTER; NUCLEI; PHOTONS; PHOTOPRODUCTION; POMERANCHUK PARTICLES; PROTONS; QUARKS

Citation Formats

E. Anciant, G. Audit, T. Auger, M. Battaglieri, J.M. Laget, C. Marchand, K. McCormick, and CLAS Collaboration. phi Photoproduction at CLAS. United States: N. p., 2000. Web.
E. Anciant, G. Audit, T. Auger, M. Battaglieri, J.M. Laget, C. Marchand, K. McCormick, & CLAS Collaboration. phi Photoproduction at CLAS. United States.
E. Anciant, G. Audit, T. Auger, M. Battaglieri, J.M. Laget, C. Marchand, K. McCormick, and CLAS Collaboration. Fri . "phi Photoproduction at CLAS". United States. https://www.osti.gov/servlets/purl/882277.
@article{osti_882277,
title = {phi Photoproduction at CLAS},
author = {E. Anciant and G. Audit and T. Auger and M. Battaglieri and J.M. Laget and C. Marchand and K. McCormick and CLAS Collaboration},
abstractNote = {The cross-section for phi meson photoproduction on the proton has been measured at a photon energy E_gamma = 3.6 GeV up to a four-momentum transfer -t = 4 GeV^2. A measurement of the differential cross-section at such high transfers, down to 100 pb/GeV^2, was only made possible thanks to the combination of the 100% duty cycle of CEBAF and the use of the large acceptance detector CLAS. At low four-momentum transfer, the differential cross-section is in agreement with previous measurements and is well accounted for by the exchange of the Pomeron. At large four-momentum transfer, above -t = 1 GeV^2, no previous data exist, and our results support a model where the Pomeron is resolved into its simplest component, two gluons. Taking into account the coupling of these gluons to any quark in the proton and the phi reproduces quite well the dependence in t of our cross-sections.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {5}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: