E. Klempt

Publication List Details

Period

1978 - 2009

Number

302

Co-Authors

Photoproduction of $\eta$ and $\eta\prime$ Mesons off Protons (2009)

CBELSA, The, Crede, TAPS Collaboration: Volker, McVeigh, A., Anisovich, A., Bacelar, J., Bantes, R., ...

Total and differential cross sections for $\eta$ and $\eta ^\prime$ photoproduction off the proton have been determined with the CBELSA/TAPS detector for photon energies between 0.85 and 2.55 GeV....

Photoproduction of eta-mesons off nuclei for Eg < 2.2 GeV (2008)

Mertens, T., Jaegle, I., Muehlich, P., Bacelar, J. C. S., Bantes, B., Bartholomy, O., ...

Photoproduction of $\eta$ mesons off $^{12}$C, $^{40}$Ca, $^{93}$Nb, and $^{nat}$Pb nuclei has been measured with a tagged photon beam with energies between 0.6 and 2.2 GeV. The experiment was...

Linearly polarised photon beams at ELSA and measurement of the beam asymmetry in pi^0-photoproduction off the proton (2008)

Elsner, D., Bantes, B., Bartholomy, O., Bayadilov, D. E., Beck, R., Beloglazov, Y. A., ...

At the electron accelerator ELSA a linearly polarised tagged photon beam is produced by coherent bremsstrahlung off a diamond crystal. Orientation and energy range of the linear polarisation can be...

Photoproduction of $\eta$ mesons off neutrons from a deuteron target (2008)

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

A formalism is developed for the partial wave analysis of data on meson photoproduction off deuterons and applied to photoproduction of $\eta$ and $\pi^0$ mesons. Different interpretations of a...

Delta resonances, quark models, chiral symmetry and AdS/QCD (2008)

Klempt, E.

The mass spectrum of Delta resonances is compared to predictions based on three quark-model variants, to predictions assuming that chiral symmetry is restored in high-mass baryon resonances, and to...

Quasi-free photoproduction of eta-mesons of the neutron (2008)

Jaegle, I., Mertens, T., Anisovich, A. V., Bacelar, J. C. S., Bantes, B., Bartholomy, O., ...

Quasi-free photoproduction of eta-mesons off nucleons bound in the deuteron has been measured with the CBELSA/TAPS detector for incident photon energies up to 2.5 GeV at the Bonn ELSA accelerator....

Methods and Models for Hadron Physics (2008)

Davies, C., Faccini, S., Lipkin, H., Maiani, L., Yndurain, F. J., ...

A round table held during the Hadron07 Conference focusing on experimental observations of new hadronic states, on theoretical perspectives for their description, and on the role of hadronic...

Further study of $D^+_s$ decays into $\pi^- \pi^+ \pi^+$ (2008)

Klempt, E., Matveev, M., Sarantsev, A. V.

A Dalitz plot analysis of the OZI rule violating decay $D^+_s$ into $\pi^- \pi^+ \pi^+$ is presented using different partial wave approaches. Scalar and vector waves are described by $K$-matrices;...

Modification of the $\omega$-Meson Lifetime in Nuclear Matter (2008)

Kotulla, M., Trnka, D., Mühlich, P., Anton, G., Bacelar, J. C. S., Bartholomy, O., ...

The photo production of $\omega$ mesons on the nuclei C, Ca, Nb and Pb has been measured using the Crystal Barrel/TAPS detector at the ELSA tagged photon facility in Bonn. The dependence of the...

A New Analysis of the Radiative Decay (2007)

K. M. Crowe, F. H. Heinsius, P. Kammel, M. Lakata, T. Degener, ...

We report on a measurement of the branching ratio of the rare decay #### relative to the well known decay ### 0 #. The #'s are produced in pp### and pp## 0 #. Eigenstate mixing and interference...

Crystal Barrel Collaboration (2007)

This Draft Written, C. J. Batty, E. Klempt

Measurements of two-body branching ratios for pp annihilations at rest in liquid and gaseous (12 ae STP ) hydrogen are reported. Channels studied are pp ! 0 0 , 0 j, K 0 L K 0 S , + \Gamma and K + K...

J. Adomeit, B. Kammle, J. Meier, P. Schmidt, R. Seibert, U. Strohbusch (2007)

A. Abele, S. Bischoff, P. Blum, N. Djaoshvili, D. Engelhardt, ...

We present a measurement and partial wave analysis of the final state KLK \Sigma ß \Upsilon of ¯ pp annihilation at rest in liquid hydrogen. This reaction is important for the study of the ¯ KK...

1 (2007)

S. U. Chung, J. Brose, R. Hackmann, E. Klempt, S. Spanier, C. Strassburger

Partial wave analysis in K-matrix formalism

EPJ manuscript No. (2007)

Will Be Inserted, C. Amsler, M. Benayoun, S. Bischo, P. Blum, ...

The three reactions pp ! # ## in proton-antiproton annihilation in #ight at 900 MeV=c are used to search for isoscalar 0 and 2 mesons in the mass range 1000 , 2000 MeV, in particular the f0#1710#....

N* and Delta* decays into N pi0 pi0 (2007)

Thoma, U., Fuchs, M., Anisovich, A. V., Anton, G., Bantes, R., Bartholomy, O., ...

Decays of baryon resonances in the second and the third resonance region into N pi0 pi0 are studied by photoproduction of two neutral pions off protons. Partial decay widths of N* and Delta*...

Baryon resonances and polarization transfer in hyperon photoproduction (2007)

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

A partial wave analysis is presented of data on photoproduction of hyperons including single and double polarization observables. The large spin transfer probability reported by the CLAS...

Further evidence for N(1900)P_{13} from photoproduction of hyperons (2007)

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

We report further evidence for $N(1900)P_{13}$ from an analysis of a large variety of photo- and pion-induced reactions, in particular from the new CLAS measurements of double polarization...

Baryon-baryon and baryon-antibaryon interaction amplitudes in the spin--momentum operator expansion method (2007)

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

Partial wave scattering amplitudes in baryon-baryon and baryon-antibaryon collisions and amplitudes for the production and decay of baryon resonances are constructed in the framework of the...

Study of K anti-K resonances in anti-p p ---> K+ K- pi0 at 900-MeV/c and 1640-MeV/c (2006)

Crystal Barrel Collaboration, Amsler, C., Baker, C. A., Barnett, B. M., Batty, C. J., Benayoun, M., ...

ProminentK ¯ K resonances observed in the in-flight annihilation of ¯ pp intoK+K−π0 include f2(1270), f0(1500), f 2 (1525), φ(1680)/ρ(1700) and a state at 1750 MeV/c2...

Photoproduction of Baryons Decaying into N pi and N eta (2005)

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

A combined analysis of photoproduction data on \gamma p to \pi N, eta N was performed including the data on K Lambda and K Sigma. The data are interpreted in an isobar model with s--channel baryon...

Decays of Baryon Resonances into K Lambda, K^+ Sigma^0 and K^0 Sigma^+ (2005)

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

Cross sections, beam asymmetries, and recoil polarisations for the reactions gamma p to K^+ Lambda ; gamma to K^+ Sigma^0, and gamma p to K^0 Sigma^+ have been measured by the SAPHIR, CLAS, and LEPS...

Measurement of the reaction gamma p --> K0 Sigma+ at photon energies up to 2.6 GeV (2005)

Lawall, R., Barth, J., Bennhold, C., Goers, S., Hannappel, J., ...

The reaction gamma p --> K0 Sigma+ was measured in the photon energy range from threshold up to 2.6 GeV with the SAPHIR detector at the electron stretcher facility, ELSA, in Bonn. Results are...

The antinucleon-nucleon interaction at low energy : annihilation dynamics (2005)

Klempt, E., Batty, C.

The general properties of antiproton-proton annihilation at rest are presented, with special focus on the two-meson final states. The data exhibit remarkable dynamical selection rules : some allowed...

The antinucleon-nucleon interaction at low energy : annihilation dynamics (2005)

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

The general properties of antiproton-proton annihilation at rest are presented, with special focus on the two-meson final states. The data exhibit remarkable dynamical selection rules : some allowed...

The antinucleon-nucleon interaction at low energy : annihilation dynamics (2005)

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

The general properties of antiproton-proton annihilation at rest are presented, with special focus on the two-meson final states. The data exhibit remarkable dynamical selection rules : some allowed...

The antinucleon-nucleon interaction at low energy : annihilation dynamics (2005)

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

The general properties of antiproton-proton annihilation at rest are presented, with special focus on the two-meson final states. The data exhibit remarkable dynamical selection rules : some allowed...

The antinucleon-nucleon interaction at low energy : annihilation dynamics (2005)

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

The general properties of antiproton-proton annihilation at rest are presented, with special focus on the two-meson final states. The data exhibit remarkable dynamical selection rules : some allowed...

The antinucleon-nucleon interaction at low energy : annihilation dynamics (2005)

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

The general properties of antiproton-proton annihilation at rest are presented, with special focus on the two-meson final states. The data exhibit remarkable dynamical selection rules : some allowed...

Partial wave decomposition of pion and photoproduction amplitudes (2004)

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

Partial wave amplitudes for production and decay of baryon resonances are constructed in the framework of the operator expansion method. The approach is fully relativistically invariant and allow us...

Measurement of gamma p --> K+ Lambda and gamma p --> K+ Sigma0 at photon energies up to 2.6 GeV (2003)

Barth, J., Braun, W., Hannappel, J., Jöpen, N., Klein, F., ...

The reactions gamma p --> K+ Lambda and gamma p --> K+ Sigma0 were measured in the energy range from threshold up to a photon energy of 2.6 GeV. The data were taken with the SAPHIR detector at the...

Vector mesons in $q\bar q\bar q$ systems (2003)

Chung, S. U., Klempt, E.

A new selection rule is described for the vector mesons in the decuplet representations of flavor SU(3)

$ SU(3) $ Classification of $ p $-Wave $ \eta\pi $ and $ \eta'\pi $ Systems (2002)

Chung, S. U., Klempt, E., Körner, J. G.

An exotic meson, the $\pi_1(1400)$ with $J^{PC}=1^{-+}$, has been seen to decay into a p-wave $\eta\pi$ system. If this decay conserves flavor SU(3), then it can be shown that this exotic meson must...

Baryon resonances and strong QCD (2002)

Klempt, E.

Light-baryon resonances (with u,d, and s quarks in the SU(3) classification) fall on Regge trajectories. When their squared masses are plotted against the intrinsic orbital angular momenta {\rm L},...

Glueballs, Hybrids and Q\bar Q Mesons (2001)

Klempt, E.

Lattice gauge calculations predict the existence of glueballs. In particular a scalar glueball is firmly expected at a mass of about 1730 MeV. This prediction has led to an intense study of scalar...

Messung der starken Kopplungskonstanten $\alpha_{s}$ und der hadronischen Spektralfunktionen in $\tau$-Zerfällen (1999)

Menke, Sven, Wermes, N, Klempt, E

The spectral functions of the vector current and the axial-vector current have been measured in hadronic tau decays using the OPAL detector at LEP. Within the framework of the operator product...

The Crystal Barrel Project at LEAR (1996)

Crystal Barrel Collaboration, Koch, H, Bueche, G, Cierjacks, S, Engelhardt, D, Kunze, M, ...

In *Villars-sur-Ollon 1987, Physics at LEAR with low energy antiprotons* 493-501

Scalar Mesons in a Relativistic Quark Model with Instanton-Induced Forces (1995)

Klempt, E., Metsch, B. C., Munz, C. R., Petry, H. R.

In a relativistic quark model with linear confinement and an instanton-induced interaction which solves the $\eta$-$\eta'$ puzzle, scalar mesons are found as almost pure SU(3) flavor states. This...

A Primer on K-matrix Formalism - -Version VII (1995)

S. U. Chung, E. Klempt

A short description is given of the K-matrix formalism. The formalism, which is normally applied to two-body scattering processes, is generalized to production of two-body channels with final-state...

pp annihilation spectroscopy: past and future with the crystal barrel. (1987)

Aker, E., Amsler, C., Batty, C., Bistirlich, J., Braune, K., Bugg, D.V., ...

2nd Internat.Conf.on Hadron Spectroscopy (Hadron 87), Tsukuba, J, April 16-18, 1987