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Title: Isobar channels in the production of π+π- pairs on a proton by virtual photons

Abstract

A new approach is developed for evaluating contributions of various isobar channels to the double charged-pion production in the reactions γ r,v p → π + π - p. This approach makes it possible to determine both respective cross sections and amplitudes for quasi-two-particle channels from a fit to data on cross sections for a three-particle final state. The diffractive anzatz, which is widely used to describe rho-meson production, is modified to meet the purpose of the description of data in the near-threshold and subthreshold regions. The cross sections for rho-meson electroproduction in the energy region of nucleon-resonance excitation are determined for the first time on the basis of the latest data of the CLAS Collaboration.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA
Sponsoring Org.:
USDOE - Office of Energy Research (ER)
OSTI Identifier:
908800
Report Number(s):
JLAB-PHY-07-642; DOE/ER/40150-4284
Journal ID: ISSN 1063-7788; PANUEO; TRN: US0703772
DOE Contract Number:  
AC05-84ER40150
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Atomic Nuclei; Journal Volume: 70
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; AMPLITUDES; CROSS SECTIONS; ELECTROPRODUCTION; EXCITATION; PHOTONS; PRODUCTION; PROTONS

Citation Formats

Burkert, V D, Mokeev, V I, Shvedunov, N V, Boluchevskii, A A, Battaglieri, M, Golovach, E N, Elouardrhiri, L, Joo, K, Isupov, E L, Ishkhanov, B S, Markov, N S, Ripani, M, Ricco, J, Sapunenko, V V, Taiuti, M, and Fedotov, G V. Isobar channels in the production of π+π- pairs on a proton by virtual photons. United States: N. p., 2007. Web. doi:10.1134/S1063778807030027.
Burkert, V D, Mokeev, V I, Shvedunov, N V, Boluchevskii, A A, Battaglieri, M, Golovach, E N, Elouardrhiri, L, Joo, K, Isupov, E L, Ishkhanov, B S, Markov, N S, Ripani, M, Ricco, J, Sapunenko, V V, Taiuti, M, & Fedotov, G V. Isobar channels in the production of π+π- pairs on a proton by virtual photons. United States. doi:10.1134/S1063778807030027.
Burkert, V D, Mokeev, V I, Shvedunov, N V, Boluchevskii, A A, Battaglieri, M, Golovach, E N, Elouardrhiri, L, Joo, K, Isupov, E L, Ishkhanov, B S, Markov, N S, Ripani, M, Ricco, J, Sapunenko, V V, Taiuti, M, and Fedotov, G V. Thu . "Isobar channels in the production of π+π- pairs on a proton by virtual photons". United States. doi:10.1134/S1063778807030027. https://www.osti.gov/servlets/purl/908800.
@article{osti_908800,
title = {Isobar channels in the production of π+π- pairs on a proton by virtual photons},
author = {Burkert, V D and Mokeev, V I and Shvedunov, N V and Boluchevskii, A A and Battaglieri, M and Golovach, E N and Elouardrhiri, L and Joo, K and Isupov, E L and Ishkhanov, B S and Markov, N S and Ripani, M and Ricco, J and Sapunenko, V V and Taiuti, M and Fedotov, G V},
abstractNote = {A new approach is developed for evaluating contributions of various isobar channels to the double charged-pion production in the reactions γ r,v p → π + π - p. This approach makes it possible to determine both respective cross sections and amplitudes for quasi-two-particle channels from a fit to data on cross sections for a three-particle final state. The diffractive anzatz, which is widely used to describe rho-meson production, is modified to meet the purpose of the description of data in the near-threshold and subthreshold regions. The cross sections for rho-meson electroproduction in the energy region of nucleon-resonance excitation are determined for the first time on the basis of the latest data of the CLAS Collaboration.},
doi = {10.1134/S1063778807030027},
journal = {Physics of Atomic Nuclei},
number = ,
volume = 70,
place = {United States},
year = {Thu Mar 01 00:00:00 EST 2007},
month = {Thu Mar 01 00:00:00 EST 2007}
}