Prof. Dr. Ulrike Thoma
HISKP room 2.007
Phone: +49-228-73-2202
E-Mail: thoma@hiskp.uni-bonn.de
Publications
- J. Hartmann and H. Dutz et al. [CBELSA/TAPS Collaboration]
"The polarization observables T, P, and H and their impact on γp→pπ0 multipoles",
Phys. Lett. B 748 (2015) 212 , [arXiv:1506.06226 [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) 9, 091803 - R. Ewald et al. [CBELSA/TAPS Collaboration]
"Measurement of polarisation observables in K0sΣ+ photoproduction off the proton",
Phys. Lett. B 738 (2014) 268 , [arXiv:1405.2729 [nucl-ex]]. - J. Hartmann [CBELSA/TAPS Collaboration]
"Measurement of double polarization observables in meson photoproduction with the CBELSA/TAPS experiment",
Proceedings of the XV International Conference on Hadron Spectroscopy (Hadron 2013), Nara, Japan. PoS(Hadron 2013) 114 (2014) , [arXiv:1401.5998 [nucl-ex]] - J. Hartmann, H. Dutz, A. V. Anisovich 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]]. - E. Gutz et al. [CBELSA/TAPS Collaboration]
"High statistics study of the reaction γp → pπ0η",
Eur. Phys. J. A 50 (2014) 74 , [arXiv:1402.4125 [nucl-ex]]. - M. Gottschall et al. [CBELSA/TAPS Collaboration]
"First measurement of the helicity asymmetry for γp → pπ0 in the resonance region",
Phys. Rev. Lett. 112 (2014) 012003 , [arXiv:1312.2187 [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 K&Sigma 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]]. - J. Hartmann [CBELSA/TAPS Collaboration]
"Measurement of the polarization observables T, P, H in pseudoscalar meson photoproduction with the CBELSA/TAPS experiment",
Proceedings of the 8th International Workshop on the Physics of Excited Nucleons (NSTAR2011), Newport News, VA, USA. AIP Conference Proceedings Volume 1432, 279 (2012) , [arXiv:1108.3459 [nucl-ex]]. - A. Thiel et al. [CBELSA/TAPS Collaboration]
"Well-established nucleon reconances revisited by double-polarization measurements",
Phys. Rev. Lett. 109(2012) 102001 , [arXiv:1207.2686 [nucl-ex]]. - 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]. - V. Crede et al. [CBELSA/TAPS Collaboration]
"Photoproduction of Neutral Pions off Protons",
Phys. Rev. C 84 (2011) 055203 , [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 (2011) 89 , [arXiv:1107.2046 [nucl-ex]]. - I. Jaegle et al. [CBELSA/TAPS Collaboration]
"Photoproduction of η′-mesons off the deuteron",
Eur. Phys. J. A 47 (2011) 11 , [arXiv:1012.1021 [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]]. - E. Gutz et al. [CBELSA/TAPS Collaboration]
"Photoproduction of meson pairs: First measurement of the polarization observable Is",
Phys. Lett. B 687 (2010) 11 , [arXiv:0912.2632 [nucl-ex]]. - N. Sparks et al. [CBELSA/TAPS Collaboration]
"Measurement of the Beam Asymmetry Σ in the Forward Direction for γ→p → pπ0 Photoproduction",
Phys. Rev. C 81 (2010) 065210 , [arXiv:1003.1346 [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. - V. Crede et al. [CBELSA/TAPS Collaboration]
"Photoproduction of η and η′ mesons off protons",
Phys. Rev. C 80 (2009) 055202 , [arXiv:0909.1248 [nucl-ex]]. - E. Klempt
"Scalar mesons from Σ(485) to χb0(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. - T. Mertens et al. [CBELSA/TAPS Collaboration]
"Photoproduction of η-mesons off nuclei for Eγ <= 2.2 GeV",
Eur. Phys. J. A 38 (2008) 195 , [arXiv:0810.2678 [nucl-ex]]. - I. Horn et al. [CB-ELSA Collaboration]
"Study of the reaction γp → pπ0η",
Eur. Phys. J. A 38 (2008) 173 , [arXiv:0806.4251 [nucl-ex]]. - M. Nanova et al. [CBELSA/TAPS Collaboration]
"K0 π0 Σ+ and K*0Σ+ photoproduction off the proton",
Eur. Phys. J. A 35 (2008) 333 , [arXiv:0803.2146 [nucl-ex]]. - E. Gutz et al. [CBELSA/TAPS Collaboration]
"Measurement of the beam asymmetry Σ in π0η production off the proton with the CBELSA/TAPS experiment",
Eur. Phys. J. A 35 (2008) 291. - I. Horn et al. [CB-ELSA Collaboration]
"Evidence for a Parity Doublet Δ(1920)P33 and Δ(1940)D33 from γp → pπ0 η",
Phys. Rev. Lett. 101 (2008) 202002 , [arXiv:0711.1138 [nucl-ex]]. - I. Jaegle et al. [CBELSA/TAPS Collaboration]
"Quasi-free photoproduction of η-mesons of the neutron",
Phys. Rev. Lett. 100 (2008) 252002 , [arXiv:0804.4841 [nucl-ex]]. - 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",
Phys. Lett. B 659 (2008) 94-100 , [arXiv:0707.3591 [hep-ph]]. - U. Thoma, M. Fuchs et al. [CB-ELSA Collaboration]
"N* and Δ* decays into Nπ0π0",
Phys. Lett. B 659 (2008) 87-93 , [arXiv:0707.3592 [hep-ph]]. - 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. - O. Bartholomy, V. Crede et al. [CB-ELSA Collaboration]
"Photoproduction of η mesons off protons",
Eur. Phys. J. A 33 (2007) 133. - J. Junkersfeld et al. [CB-ELSA Collaboration]
"Photoproduction of π0ω off protons for Eγ ≤ 3 GeV",
Eur. Phys. J. A 31 (2007) 365 , [arXiv:0704.0710 [nucl-ex]]. - H. van Pee, O. Bartholomy, V. Crede et al. [CB-ELSA Collaboration]
"Photoproduction of π0-mesons off protons from the Δ(1232) region to Eγ = 3 GeV",
Eur. Phys. J. A 31 (2007) 61 , [arXiv:0704.1776 [nucl-ex]]. - 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. - 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. - 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. - O. Bartholomy, V. Crede, H. van Pee et al. [CB-ELSA Collaboration]
"Neutral pion photoproduction off protons in the energy range 0.3 GeV < Eγ < 3 GeV",
Phys. Rev. Lett. 94 (2005) 012003 , [arXiv:hep-ex/0407022]. - V. Crede, O. Bartholomy et al. [CB-ELSA Collaboration]
"Photoproduction of η mesons off protons for 0.75 GeV < Eγ < 3 GeV",
Phys. Rev. Lett. 94 (2005) 012004 , [arXiv:hep-ex/0311045]. - 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.