Photocouplings at the pole from pion photoproduction

Ronchen, D.; Doring, M.; Huang, F.; Haberzettl, H.; Haidenbauer, J.; Hanhart, C.; Krewald, S.; MeiBner, U. -G.; Nakayama, K.

doi:10.1140/epja/i2014-14101-3

Title: Photocouplings at the pole from pion photoproduction

Abstract

The reactions γp → π⁰p and γp → π⁺n are analyzed in a semi-phenomenological approach up to E ~ 2.3 GeV. Fits to differential cross section and single and double polarization observables are performed. A good overall reproduction of the available photoproduction data is achieved. The Julich2012 dynamical coupled-channel model -which describes elastic πN scattering and the world data base of the reactions πN → ηN, KΛ, and KΣ at the same time– is employed as the hadronic interaction in the final state. Furthermore, the framework guarantees analyticity and, thus, allows for a reliable extraction of resonance parameters in terms of poles and residues. In particular, the photocouplings at the pole can be extracted and are presented.

Authors:

Ronchen, D. ^[1]; Doring, M. ^[2]; Huang, F. ^[3]; Haberzettl, H. ^[4]; Haidenbauer, J. ^[1]; Hanhart, C. ^[1]; Krewald, S. ^[1]; MeiBner, U. -G. ^[5]; Nakayama, K. ^[6]

Forschungszentrum Julich, Julich (Germany)
Univ. Bonn, Bonn (Germany); The George Washington Univ., Washington, D.C. (United States)
Univ. of Chinese Academy of Sciences, Beijing (China); Univ. of Georgia, Athens, GA (United States)
The George Washington Univ., Washington, D.C. (United States)
Forschungszentrum Julich, Julich (Germany); Univ. Bonn, Bonn (Germany)
Forschungszentrum Julich, Julich (Germany); Univ. of Georgia, Athens, GA (United States)

Publication Date:: Tue Jun 24 00:00:00 EDT 2014

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

Sponsoring Org.:: USDOE

OSTI Identifier:: 1303564

Report Number(s):: JLAB-THY-14-2018; DOE/OR/23177-3899; arXiv:1401.0634
Journal ID: ISSN 1434-6001; PII: 92; JLAB-EXP-94-103; JLAB-EXP-03-105

Grant/Contract Number:: AC05-06OR23177

Resource Type:: Accepted Manuscript

Journal Name:: European Physical Journal. A

Additional Journal Information:: Journal Volume: 50; Journal Issue: 6; Journal ID: ISSN 1434-6001

Publisher:: Springer

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats


                    Ronchen, D., Doring, M., Huang, F., Haberzettl, H., Haidenbauer, J., Hanhart, C., Krewald, S., MeiBner, U. -G., and Nakayama, K. Photocouplings at the pole from pion photoproduction.  United States: N. p., 2014. 
Web.  doi:10.1140/epja/i2014-14101-3.

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                    Ronchen, D., Doring, M., Huang, F., Haberzettl, H., Haidenbauer, J., Hanhart, C., Krewald, S., MeiBner, U. -G., & Nakayama, K. Photocouplings at the pole from pion photoproduction.  United States.  https://doi.org/10.1140/epja/i2014-14101-3

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                    Ronchen, D., Doring, M., Huang, F., Haberzettl, H., Haidenbauer, J., Hanhart, C., Krewald, S., MeiBner, U. -G., and Nakayama, K. Tue .  
"Photocouplings at the pole from pion photoproduction".  United States.  https://doi.org/10.1140/epja/i2014-14101-3.  https://www.osti.gov/servlets/purl/1303564.

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@article{osti_1303564,

  title        = {Photocouplings at the pole from pion photoproduction},

  author       = {Ronchen, D. and Doring, M. and Huang, F. and Haberzettl, H. and Haidenbauer, J. and Hanhart, C. and Krewald, S. and MeiBner, U. -G. and Nakayama, K.},

  abstractNote = {The reactions γp → π0p and γp → π+n are analyzed in a semi-phenomenological approach up to E ~ 2.3 GeV. Fits to differential cross section and single and double polarization observables are performed. A good overall reproduction of the available photoproduction data is achieved. The Julich2012 dynamical coupled-channel model -which describes elastic πN scattering and the world data base of the reactions πN → ηN, KΛ, and KΣ at the same time– is employed as the hadronic interaction in the final state. Furthermore, the framework guarantees analyticity and, thus, allows for a reliable extraction of resonance parameters in terms of poles and residues. In particular, the photocouplings at the pole can be extracted and are presented.},

  doi          = {10.1140/epja/i2014-14101-3},

  journal      = {European Physical Journal. A},

  number       = 6,

  volume       = 50,

  place        = {United States},

  year         = {Tue Jun 24 00:00:00 EDT 2014},

  month        = {Tue Jun 24 00:00:00 EDT 2014}

}

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The reaction <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msup><mml:mi>π</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:mi>p</mml:mi><mml:mo>→</mml:mo><mml:msup><mml:mi>K</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>Σ</mml:mi><mml:mo>+</mml:mo></mml:msup></mml:math> in a unitary coupled-channels model
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Photon– and pion–nucleon interactions in a unitary and causal effective field theory based on the chiral Lagrangian journal, December 2010

Evaluation of the polarization observables IS and IC in the reaction $ \gamma$p $ \rightarrow$ $ \pi^{0}_{}$ $ \eta$p journal, October 2010

Radiative decay of the journal, April 2007

A gauge-invariant chiral unitary framework for kaon photo- and electroproduction on the proton journal, November 2007

K − p scattering length from scattering experiments journal, November 2006

Chiral dynamics in the γ p → π 0 η p and γ p → π 0 K 0 Σ + reactions journal, April 2006

Role of vector and pseudoscalar mesons in understanding 1 / 2 − N * and Δ resonances journal, December 2013

N*'s AND Δ's GENERATED IN VECTOR, PSEUDOSCALAR MESON-BARYON SYSTEMS journal, January 2014

Effects of pseudoscalar-baryon channels in the dynamically generated vector-baryon resonances journal, January 2012

Dynamically generated N * and Λ * resonances in the hidden charm sector around 4.3 GeV journal, July 2011

On baryon resonances and chiral symmetry journal, April 2004

Quark mass dependence of s-wave baryon resonances journal, February 2004

Pion- and photo-induced transition amplitudes to ΛK, ΣK and Nη journal, June 2012

Properties of baryon resonances from a multichannel partial wave analysis journal, February 2012

Study of ambiguities in π−p → ΛK0 scattering amplitudes journal, October 2013

Coupled-channel analysis of K Σ production on the nucleon up to 2.0 GeV journal, November 2013

η -meson production in the resonance-energy region journal, January 2013

Multichannel parametrization of π N scattering amplitudes and extraction of resonance parameters journal, November 2012

Partial-wave analysis of the π − p → η n and π − p → K 0 Λ reactions journal, October 2012

Poles of the Zagreb analysis partial-wave T matrices journal, September 2010

π N → η N Data Require the Existence of the N ( 1710 ) P 11 Resonance, Reducing the 1700-MeV Continuum Ambiguity journal, August 2006

The extended tree-level model for the pion-nucleon interaction journal, August 1994

Pion-nucleon scattering in the K-matrix approach journal, February 1999

The K-matrix approach to the Δ-resonance mass splitting and isospin violation in low-energy πN scattering journal, September 2006

Unitary isobar model --MAID2007 journal, October 2007

Electromagnetic excitation of nucleon resonances journal, September 2011

Nucleon resonances within a dynamical coupled-channels model of π N and γ N reactions journal, September 2013

Extraction of electromagnetic transition form factors for nucleon resonances within a dynamical coupled-channels model journal, October 2010

Dynamical coupled channels calculation of pion and omega meson production journal, February 2009

Dynamical coupled-channels effects on pion photoproduction journal, April 2008

Dynamical coupled-channels model of π N scattering in the W ⩽ 2 GeV nucleon resonance region journal, December 2007

Dynamical coupled-channel model of meson production reactions in the nucleon resonance region journal, February 2007

Singularity structure of the π N scattering amplitude in a meson-exchange model up to energies W ⩽ 2 . 0 GeV journal, November 2010

Nucleon resonances in π N scattering up to energies s ⩽ 2 . 0 GeV journal, September 2007

Effective Lagrangian Approach to pion photoproduction from the nucleon journal, June 2006

Pion photoproduction on nucleons in a covariant hadron-exchange model journal, September 2004

Photoproduction of mesons from the nucleon journal, December 2003

Coupled-channel dynamics in the reactions πN → πN, ηN, KΛ, KΣ journal, April 2013

The role of the background in the extraction of resonance contributions from meson–baryon scattering journal, October 2009

Analytic properties of the scattering amplitude and resonances parameters in a meson exchange model journal, October 2009

Pion-nucleon scattering in a meson-exchange model journal, October 2003

What is the structure of the Roper resonance? journal, July 2000

Relevance of complex branch points for partial wave analysis journal, July 2011

Extended partial-wave analysis of $π N$ scattering data
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Unified Chew-Mandelstam SAID analysis of pion photoproduction data
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Nucleon electromagnetic form factors and electroexcitation of low-lying nucleon resonances in a light-front relativistic quark model
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Effects of a spin-flavour-dependent interaction on the baryon mass spectrum
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A chiral quark model for meson electroproduction in the region of D-wave resonances
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Covariant model for the $γ N \to N (1535)$ transition at high momentum transfer
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Photo- and electroproduction of nonstrange baryon resonances in the relativized quark model
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Quasi-two-body decays of nonstrange baryons
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Negative parity baryon decays in the $1 / N_{c}$ expansion
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Nucleon and Roper electromagnetic elastic and transition form factors
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Spectrum of Hadrons with Strangeness
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Flavor structure of the excited baryon spectra from lattice QCD
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Complete experiments in pseudoscalar photoproduction
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Determining pseudoscalar meson photoproduction amplitudes from complete experiments
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Model dependence of single-energy fits to pion photoproduction data
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Incompleteness of complete pseudoscalar-meson photoproduction
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Completeness rules for spin observables in pseudoscalar meson photoproduction
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Neutral pion photoproduction at threshold
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Threshold pion photoproduction in chiral perturbation theory
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Threshold pion electroproduction in chiral perturbation theory
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Threshold two-pion photo- and electroproduction: More neutrals than expected
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Neutral pion photoproduction off nucleons revisited
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Double neutral pion photoproduction at threshold
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The Fubini-Furlan-Rosetti sum rule and related aspects in light of covariant baryon chiral perturbation theory⋆
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Isospin breaking in the pion–nucleon scattering lengths
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Precision calculation of threshold scattering, πN scattering lengths, and the GMO sum rule
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Roy-Steiner equations for pion-nucleon scattering
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Threshold $π^{0}$ photoproduction in relativistic chiral perturbation theory
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Pion photo- and electroproduction in relativistic baryon chiral perturbation theory and the chiral MAID interface
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Upper energy limit of heavy baryon chiral perturbation theory in neutral pion photoproduction
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Unexpected impact of $D$ waves in low-energy neutral pion photoproduction from the proton and the extraction of multipoles
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Chiral unitary mesonâ€“baryon dynamics in the presence of resonances: elastic pionâ€“nucleon scattering
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Pion photoproduction off the proton in a gauge-invariant chiral unitary framework
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η-Photoproduction in a gauge-invariant chiral unitary framework
journal, October 2011

Photon– and pion–nucleon interactions in a unitary and causal effective field theory based on the chiral Lagrangian
journal, December 2010

Evaluation of the polarization observables IS and IC in the reaction $ \gamma$p $ \rightarrow$ $ \pi^{0}_{}$ $ \eta$p
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Radiative decay of the
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A gauge-invariant chiral unitary framework for kaon photo- and electroproduction on the proton
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$K^{-} p$ scattering length from scattering experiments
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Chiral dynamics in the $γ p \to π^{0} η p$ and $γ p \to π^{0} K^{0} Σ^{+}$ reactions
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Role of vector and pseudoscalar mesons in understanding $1 / 2^{-}$ $N^{*}$ and $Δ$ resonances
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N*'s AND Δ's GENERATED IN VECTOR, PSEUDOSCALAR MESON-BARYON SYSTEMS
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Effects of pseudoscalar-baryon channels in the dynamically generated vector-baryon resonances
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Dynamically generated $N^{}$ and $Λ^{}$ resonances in the hidden charm sector around 4.3 GeV
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On baryon resonances and chiral symmetry
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Quark mass dependence of s-wave baryon resonances
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Pion- and photo-induced transition amplitudes to ΛK, ΣK and Nη
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Properties of baryon resonances from a multichannel partial wave analysis
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Study of ambiguities in π−p → ΛK0 scattering amplitudes
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Coupled-channel analysis of $K Σ$ production on the nucleon up to 2.0 GeV
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$η$ -meson production in the resonance-energy region
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Multichannel parametrization of $π N$ scattering amplitudes and extraction of resonance parameters
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Partial-wave analysis of the $π^{-} p$ $\to$ $η n$ and $π^{-} p \to K^{0} Λ$ reactions
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Poles of the Zagreb analysis partial-wave $T$ matrices
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$π N \to η N$ Data Require the Existence of the $N (1710)$ $P_{11}$ Resonance, Reducing the 1700-MeV Continuum Ambiguity
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The extended tree-level model for the pion-nucleon interaction
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Pion-nucleon scattering in the K-matrix approach
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The K-matrix approach to the Δ-resonance mass splitting and isospin violation in low-energy πN scattering
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Unitary isobar model --MAID2007
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Electromagnetic excitation of nucleon resonances
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Nucleon resonances within a dynamical coupled-channels model of $π N$ and $γ N$ reactions
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Extraction of electromagnetic transition form factors for nucleon resonances within a dynamical coupled-channels model
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Dynamical coupled channels calculation of pion and omega meson production
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Dynamical coupled-channels effects on pion photoproduction
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Dynamical coupled-channels model of $π N$ scattering in the $W ⩽ 2$ GeV nucleon resonance region
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Dynamical coupled-channel model of meson production reactions in the nucleon resonance region
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Singularity structure of the $π N$ scattering amplitude in a meson-exchange model up to energies $W ⩽ 2.0$ GeV
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Nucleon resonances in $π N$ scattering up to energies $\sqrt{s} ⩽ 2.0$ GeV
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Effective Lagrangian Approach to pion photoproduction from the nucleon
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Pion photoproduction on nucleons in a covariant hadron-exchange model
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Photoproduction of mesons from the nucleon
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Coupled-channel dynamics in the reactions πN → πN, ηN, KΛ, KΣ
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The role of the background in the extraction of resonance contributions from meson–baryon scattering
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Analytic properties of the scattering amplitude and resonances parameters in a meson exchange model
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Pion-nucleon scattering in a meson-exchange model
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What is the structure of the Roper resonance?
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Relevance of complex branch points for partial wave analysis
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Sign ambiguity in the KΣ channel
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Dynamical coupled-channel approaches on a momentum lattice
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QCD with two light dynamical chirally improved quarks: Baryons
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