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Title: Search for Resonances in the Photoproduction of Proton-Antiproton Pairs

Abstract

Results are reported on the reaction γp → p$$\bar{p}$$p with beam energy in the range 4.8-5.5 GeV. The data were collected at the Thomas Jefferson National Accelerator Facility in CLAS experiment E01-017(G6C). The focus of this study is an understanding of the mechanisms of photoproduction of proton-antiproton pairs, and to search for intermediate resonances, both narrow and broad, which decay to p$$\bar{p}$$. The total measured cross section in the photon energy range 4.8-5.5 GeV is σ = 33 ± 2 nb. Measurement of the cross section as a function of energy is provided. An upper limit on the production of a narrow resonance state previously observed with a mass of 2.02 GeV/c 2 is placed at 0.35 nb. No intermediate resonance states were observed. Meson exchange production appears to dominate the production of the proton-antiproton pairs.

Authors:
 [1]
  1. Florida State Univ., Tallahassee, FL (United States)
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1035480
Report Number(s):
JLAB-PHY-06-645; DOE/OR/23177-2016
TRN: US1201233
DOE Contract Number:
AC05-06OR23177
Resource Type:
Thesis/Dissertation
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BOSON-EXCHANGE MODELS; CEBAF ACCELERATOR; CROSS SECTIONS; DECAY; ENERGY LEVELS; ENERGY RANGE; INTERMEDIATE RESONANCE; PHOTONS; PHOTOPRODUCTION; PRODUCTION

Citation Formats

Stokes, Burnham. Search for Resonances in the Photoproduction of Proton-Antiproton Pairs. United States: N. p., 2006. Web. doi:10.2172/1035480.
Stokes, Burnham. Search for Resonances in the Photoproduction of Proton-Antiproton Pairs. United States. doi:10.2172/1035480.
Stokes, Burnham. Sun . "Search for Resonances in the Photoproduction of Proton-Antiproton Pairs". United States. doi:10.2172/1035480. https://www.osti.gov/servlets/purl/1035480.
@article{osti_1035480,
title = {Search for Resonances in the Photoproduction of Proton-Antiproton Pairs},
author = {Stokes, Burnham},
abstractNote = {Results are reported on the reaction γp → p$\bar{p}$p with beam energy in the range 4.8-5.5 GeV. The data were collected at the Thomas Jefferson National Accelerator Facility in CLAS experiment E01-017(G6C). The focus of this study is an understanding of the mechanisms of photoproduction of proton-antiproton pairs, and to search for intermediate resonances, both narrow and broad, which decay to p$\bar{p}$. The total measured cross section in the photon energy range 4.8-5.5 GeV is σ = 33 ± 2 nb. Measurement of the cross section as a function of energy is provided. An upper limit on the production of a narrow resonance state previously observed with a mass of 2.02 GeV/c2 is placed at 0.35 nb. No intermediate resonance states were observed. Meson exchange production appears to dominate the production of the proton-antiproton pairs.},
doi = {10.2172/1035480},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}

Thesis/Dissertation:
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