Two Pion Photo- and Electroproduction with CLAS

Mokeev, Victor I.; al., et

doi:10.1051/epjconf/202024103003

Title: Two Pion Photo- and Electroproduction with CLAS

Abstract

Exclusive π⁺π^-p photo- and electroproduction data from CLAS have considerably extended the information on the spectrum and structure of nucleon resonances. The data from the π⁺π^-p and Nπ channels have provided results on the electrocouplings of most resonances in the mass region up to 1.8 GeV and at photon virtualities up to 5.0 GeV². The recent CLAS data on π⁺π^-p photoproduction have improved knowledge on the photocouplings of nucleon resonances in the mass range of 1.6 GeV < M_N* < 2.0 GeV and on their decays to the πΔ and ρp final hadron states. Analyses of the combined π+π-p photo- and electroproduction data have revealed evidence for the candidate-state N’(1720)3/2⁺. The new results on the nucleon resonance spectrum, electroexcitation amplitudes from analysis of the CLAS π⁺π^-p photo- and electroproduction data, and their impact on the exploration of strong QCD are presented.

Authors:: Mokeev, Victor I.; al., et

Publication Date:: Tue Sep 22 00:00:00 EDT 2020

Research Org.:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP)

Contributing Org.:: CLAS Collaboration

OSTI Identifier:: 1708834

Report Number(s):: JLAB-PHY-19-3036; DOE/OR/23177-4787
Journal ID: ISSN 2100-014X; TRN: US2204626

Grant/Contract Number:: AC05-06OR23177

Resource Type:: Accepted Manuscript

Journal Name:: EPJ Web of Conferences (Online)

Additional Journal Information:: Journal Name: EPJ Web of Conferences (Online); Journal Volume: 241; Conference: NSTAR 2019, 10-14 June 2019, Bonn, Germany; Journal ID: ISSN 2100-014X

Publisher:: EDP Sciences

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats


                    Mokeev, Victor I., and al., et. Two Pion Photo- and Electroproduction with CLAS.  United States: N. p., 2020. 
Web.  doi:10.1051/epjconf/202024103003.

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                    Mokeev, Victor I., & al., et. Two Pion Photo- and Electroproduction with CLAS.  United States.  https://doi.org/10.1051/epjconf/202024103003

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                    Mokeev, Victor I., and al., et. Tue .  
"Two Pion Photo- and Electroproduction with CLAS".  United States.  https://doi.org/10.1051/epjconf/202024103003.  https://www.osti.gov/servlets/purl/1708834.

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@article{osti_1708834,

  title        = {Two Pion Photo- and Electroproduction with CLAS},

  author       = {Mokeev, Victor I. and al., et},

  abstractNote = {Exclusive π+π-p photo- and electroproduction data from CLAS have considerably extended the information on the spectrum and structure of nucleon resonances. The data from the π+π-p and Nπ channels have provided results on the electrocouplings of most resonances in the mass region up to 1.8 GeV and at photon virtualities up to 5.0 GeV2. The recent CLAS data on π+π-p photoproduction have improved knowledge on the photocouplings of nucleon resonances in the mass range of 1.6 GeV < MN* < 2.0 GeV and on their decays to the πΔ and ρp final hadron states. Analyses of the combined π+π-p photo- and electroproduction data have revealed evidence for the candidate-state N’(1720)3/2+. The new results on the nucleon resonance spectrum, electroexcitation amplitudes from analysis of the CLAS π+π-p photo- and electroproduction data, and their impact on the exploration of strong QCD are presented.},

  doi          = {10.1051/epjconf/202024103003},

  journal      = {EPJ Web of Conferences (Online)},

  number       = ,

  volume       = 241,

  place        = {United States},

  year         = {Tue Sep 22 00:00:00 EDT 2020},

  month        = {Tue Sep 22 00:00:00 EDT 2020}

}

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Works referenced in this record:

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Segovia, Jorge; Cloët, Ian C.; Roberts, Craig D.
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Measurement of New Observables from the $$\pi ^{+}\pi ^{-}p$$ π + π - p Electroproduction Off the Proton: Reaction: $$ep \rightarrow e'p'\pi ^{+}\pi ^{-}$$ e p → e ′ p ′ π + π - $$Q^{2}=[2.0, 5.0]$$ Q 2 = [ 2.0 , 5.0 ] GeV2 $$W=[1.400, 2.125]$$ W = [ 1.400 , 2.125 ] GeV
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