A2. Partial Wave Analysis

A. Sarantsev, U. Thoma

The aim of this project is to extract the properties of baryon resonances from the data and to understand the related meson production processes. Forthcoming photoproduction data from ELSA and other laboratories, including especially single and double polarization experiments off the proton and neutron, will be analyzed in a multi-channel partial wave analysis of all relevant data, including also electroproduction data and data from hadronic reactions.

Publications

Published and accepted papers

I. Denisenko et al.

„N^* decays to N ω from new data on γ p → ω p″,
Phys. Lett. B 755 (2016) 97, [arXiv:1601.06092 [nucl-ex]].

A. Wilson et al. [CBELSA/TAPS Collaboration]

„Photoproduction of ω mesons off the proton″,
Phys. Lett. B 749 (2015) 407, [arXiv:1508.01483 [nucl-ex]].

V. Sokhoyan et al. [CBELSA/TAPS Collaboration]

„High-statistics study of the reaction γ p → p 2π⁰″,
Eur. Phys. J. A 51 (2015) no.8, 95 , Erratum: Eur. Phys. J. A 51 (2015) no.12, 187, [arXiv:1507.02488 [nucl-ex]].

J. Hartmann et al. [CBELSA/TAPS Collaboration]

„The polarization observables T , P , and H and their impact on γ p → p π⁰ multipoles″,
Phys. Lett. B 748 (2015) 212, [arXiv:1506.06226 [nucl-ex]]

V. Sokhoyan et al. [CBELSA/TAPS Collaboration]

„Data on I^s and I^c in γ p → p π⁰ π⁰ reveal cascade decays of N(1900) via N(1520)π″,
Phys. Lett. B 746 (2015) 127

H. Eberhardt et al. [CBELSA/TAPS Collaboration]

„Measurement of double polarisation asymmetries in ω-photoproduction″,
Phys. Lett. B 750 (2015) 453, [arXiv:1504.02221 [nucl-ex]].

A. Thiel et al. [CBELSA/TAPS Collaboration]

„Three-body nature of N^* and Δ^* resonances from sequential decay chains″,
Phys. Rev. Lett. 114 (2015) no.9, 091803, [arXiv:1501.02094 [nucl-ex]].

A. V. Anisovich, E. Klempt, B. Krusche, V. A. Nikonov, A. V.~Sarantsev, U. Thoma and D. Werthmüller

„Interference phenomena in the J^P=1/2^- wave in η photoproduction″,
Eur. Phys. J. A 51 (2015) no 6., 72, [arXiv:1501.02093 [nucl-ex]].

R. Ewald et al. [CBELSA/TAPS Collaboration]

„Measurement of polarisation observables in K⁰_sΣ⁺ photoproduction off the proton″,
Phys. Lett. B 738 (2014) 268, [arXiv:1405.2729 [nucl-ex]].

J. Hartmann and H. Dutz et al. [CBELSA/TAPS Collaboration]

„The N(1520) 3/2- helicity amplitudes from an energy-independent multipole analysis based on new polarization data on photoproduction of neutral pions″,
Phys. Rev. Lett. 113 (2014) 062001, [arXiv:1407.2163 [nucl-ex]].

A. V. Anisovich, R. Beck, V. Burkert, E. Klempt, M. E. McCracken, V. A. Nikonov, A. V. Sarantsev and R. A. Schumacher

„Energy-independent PWA of the reaction γp → K⁺Λ″,
Eur. Phys. J. A 50 (2014) 129, [arXiv:1404.4587 [nucl-ex]].

A. V. Anisovich, E. Klempt, V. A. Nikonov, A. V. Sarantsev and U. Thoma

„Comment on Narrow Structure in the Excitation Function of η Photoproduction off the Neutron″,
[arXiv:1402.7164 [nucl-ex]].

A. V. Anisovich, E. Klempt, V. A. Nikonov, A. V. Sarantsev and U. Thoma

„Sign ambiguity in the KΣ channel″,
Eur. Phys. J. A 49 (2013) 158, [arXiv:1310.3610 [nucl-ex]].

A. V. Anisovich, R. Beck, E. Klempt, V. A. Nikonov, A. V. Sarantsev, U. Thoma and Y. Wunderlich

„Study of ambiguities in π^-p → ΛK⁰ scattering amplitudes″,
Eur. Phys. J. A 49 (2013) 121, [arXiv:1306.5126 [hep-ph]].

A. V. Anisovich, R. Beck, E. Klempt, V. A. Nikonov, A. V. Sarantsev and U. Thoma

„Pion- and photo-induced transition amplitudes to ΛK, ΣK, and Nη″,
Eur. Phys. J. A 48 (2012) 88, [arXiv:1205.2255 [nucl-th]].

A. V. Anisovich, R. Beck, E. Klempt, V. A. Nikonov, A. V. Sarantsev and U. Thoma

„Properties of baryon resonances from a multichannel partial wave analysis″,
Eur. Phys. J. A 48 (2012) 15;, [arXiv:1112.4937 [hep-ph]].

A. V. Anisovich, E. Klempt, V. A. Nikonov, A. V. Sarantsev, H. Schmieden and U. Thoma

„Evidence for a negative-parity spin-doublet of nucleon resonances at 1.88GeV″,
Phys. Lett. B 711 (2012) 162;, [arXiv:1111.6151 [nucl-ex].

A. V. Anisovich, E. Klempt, V. A. Nikonov, A. V. Sarantsev and U. Thoma

„Evidence for a spin-quartet of nucleon resonances at 2GeV″,
Phys. Lett. B 711 (2012) 167;, [arXiv:1111.6150 [nucl-ex].

A. V. Anisovich, E. Klempt, V. A. Nikonov, A. V. Sarantsev and U. Thoma

„Nucleon resonances in the fourth resonance region″,
Eur. Phys. J. A 47, 153 (2011);, [arXiv:1109.0970 [hep-ph]].

A. V. Anisovich, E. Klempt, V. A. Nikonov, A. V. Sarantsev and U. Thoma

„P-wave excited baryons from pion- and photo-induced hyperon production″,
Eur. Phys. J. A 47, 27 (2011);, [arXiv:1009.4803 [hep-ph]].

V. Crede et al. [CBELSA/TAPS Collaboration]

„Photoproduction of Neutral Pions off Protons″,
Phys. Rev. C 84, 055203 (2011);, [arXiv:1107.2151 [nucl-ex]].

I. Jaegle et al. [CBELSA/TAPS Collaboration]

„Quasi-free photoproduction of η-mesons off the deuteron″,
Eur. Phys. J. A 47, 89 (2011);, [arXiv:1107.2046 [nucl-ex]].

I. Jaegle et al. [CBELSA/TAPS Collaboration]

„Photoproduction of η-mesons off the deuteron″,
Eur. Phys. J. A 47, 11 (2011);, [arXiv:1012.1021 [nucl-ex]].

E. Klempt

„Vom Ursprung der Masse″,
Physik J. 9N5, (2010) 31.

L. Y. Glozman and A. Sarantsev

„Some indication for a missing chiral partner η₄ around 2 GeV″,
Phys. Rev. D 82 (2010) 037501.

A. V. Anisovich, E. Klempt, V. A. Nikonov, M. A. Matveev, A. V. Sarantsev and U. Thoma

„Photoproduction of pions and properties of baryon resonances from a Bonn-Gatchina partial wave analysis″,
Eur. Phys. J. A 44 (2010) 203.

E. Klempt

„Scalar mesons from Σ(485) to χ_b₀(9860): a global view″,
Nucl. Phys. Proc. Suppl. 186 (2009) 355.

H. Forkel and E. Klempt

„Diquark correlations in baryon spectroscopy and holographic QCD″,
Phys. Lett. B 679 (2009) 77.

A. V. Anisovich, I. Jaegle, E. Klempt, B. Krusche, V. A. Nikonov, A. V. Sarantsev and U. Thoma

„Photoproduction of η mesons off neutrons from a deuteron target″,
Eur. Phys. J. A 41 (2009) 13;, [arXiv:0809.3340 [hep-ph]].

A. V. Sarantsev, A. V. Anisovich, V. A. Nikonov and H. Schmieden

„Polarization degrees of freedom in near-threshold photoproduction of ω mesons in the π⁰γ decay channel″,
Eur. Phys. J. A 39 (2009) 61.

I. Horn et al. [CB-ELSA Collaboration]

„Study of the reaction γ p → p π⁰ η″,
Eur. Phys. J. A 38 (2008) 173, [arXiv:0806.4251 [nucl-ex]].

I. Horn et al. [CB-ELSA Collaboration]

„Evidence for a Parity Doublet Δ (1920)P₃₃ and Δ (1940)D₃₃ from γ p → p π⁰ η″,
Phys. Rev. Lett. 101 (2008) 202002, [arXiv:0711.1138 [nucl-ex]].

E. Klempt

„Delta resonances, quark models, chiral symmetry and AdS/QCD″,
Eur. Phys. J. A 38 (2008) 187.

V. A. Nikonov, A. V. Anisovich, E. Klempt, A. V. Sarantsev and U. Thoma

„Further evidence for N(1900)P₁₃ from photoproduction of hyperons″,
Phys. Lett. B 662 (2008) 245.

U. Thoma, M. Fuchs et al. [CB-ELSA Collaboration]

„N* and Δ* decays into Nπ⁰π⁰″,
Physics Letters B 659 (2008) 87-93.

A.V. Sarantsev, M. Fuchs, M. Kotulla, U. Thoma et al. [CB-ELSA and A2-TAPS Collaborations]

„New results on the Roper resonance and the P₁₁ partial wave″,
Physics Letters B 659 (2008) 94-100.

R. Castelijns et al. [CBELSA/TAPS Collaboration]

„Nucleon resonance decay by the K⁰Σ⁺ channel″,
Eur. Phys. J. A 35 (2008) 39.

A. V. Anisovich, V. Kleber, E. Klempt, V. A. Nikonov, A. V. Sarantsev and U. Thoma

„Baryon resonances and polarization transfer in hyperon photoproduction″,
Eur. Phys. J. A 34 (2007) 243.

A. V. Anisovich, V. V. Anisovich, E. Klempt, V. A. Nikonov and A. V. Sarantsev

„Baryon-baryon and baryon-antibaryon interaction amplitudes in the spin-momentum operator expansion method″,
Eur. Phys. J. A 34 (2007) 129-152.

O. Bartholomy, V. Crede et al. [CB-ELSA Collaboration]

„Photoproduction of η mesons off protons″,
Eur. Phys. J. A 33 (2007) 133.

D. Elsner et al. [CBELSA/TAPS collaboration]

„Measurement of the beam asymmetry in η photoproduction off the proton″,
Eur. Phys. J. A 33 (2007) 147.

J. Junkersfeld et al. [CB-ELSA Collaboration]

„Photoproduction of π⁰ω off protons for E_γ ≤ 3 GeV″,
Eur. Phys. J. A 31 (2007) 365.

H. van Pee, O. Bartholomy, V. Crede et al. [CB-ELSA Collaboration]

„Photoproduction of π⁰-mesons off protons from the Δ(1232) region to E_γ=3 GeV″,
Eur. Phys. J. A 31 (2007) 61.

A. V. Anisovich and A. V. Sarantsev

„Partial decay widths of baryons in the spin-momentum operator expansion method″,
Eur. Phys. J. A 30 (2006) 427.

E. Klempt, A. V. Anisovich, V. A. Nikonov, A. V. Sarantsev and U. Thoma

„Phase Motion of Baryon Resonances″,
Eur. Phys. J. A 29 (2006) 307.

A. V. Sarantsev, V. A. Nikonov, A. V. Anisovich, E. Klempt and U. Thoma

„Decays of baryon resonances into Λ K⁺ Σ⁰ K⁺ and Σ⁺K⁰″,
Eur. Phys. J. A 25 (2005) 441.

A. V. Anisovich, A. Sarantsev, O. Bartholomy, E. Klempt, V. A. Nikonov and U. Thoma

„Photoproduction of baryons decaying into Nπ and Nη″,
Eur. Phys. J. A 25 (2005) 427.

A. Anisovich, E. Klempt, A. Sarantsev and U. Thoma

„Partial wave decomposition of pion and photoproduction amplitudes″,
Eur. Phys. J. A 24 (2005) 111.

V. Crede, O. Bartholomy et al. [CB-ELSA Collaboration]

„Neutral pion photoproduction off protons in the energy range 0.3 GeV < E_γ < 3 GeV″,
Phys. Rev. Lett. 94 (2005) 012003.

O. Bartholomy, V. Crede, H. van Pee et al. [CB-ELSA Collaboration]

„Photoproduction of η mesons off protons for 0.75 GeV < E_γ< 3 GeV″,
Phys. Rev. Lett. 94 (2005) 012004.

Related review articles

E. Klempt and J. M. Richard

„Baryon spectroscopy″,
Rev. Mod. Phys. 82 (2010) 1095.

E. Klempt and A. Zaitsev

„Glueballs, Hybrids, Multiquarks. Experimental facts versus QCD inspired concepts″,
Phys. Rep. 454 (2007) 1.

E. Klempt, C. Batty and J. M. Richard

„The antinucleon nucleon interaction at low energy: Annihilation dynamics″,
Phys. Rept. 413 (2005) 197, [arXiv:hep-ex/0501020].

Collaborative Research Centre 16

A2. Partial Wave Analysis

Publications