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Publications (31)

nucl-ex2015

Measurement of double polarisation asymmetries in $I ¨ $ -photoproduction

H. Eberhardt, T. C. Jude, H. Schmieden +72

The first measurements of the beam-target-helicity-asymmetries $E$ and $G$ in the photoproduction of $I ¨ $ -mesons off protons at the CBELSA/TAPS experiment are reported. $E$ ( $G$ ) w…

nucl-ex2014

First measurement of the helicity asymmetry for $I^^{3} p \to p I ¨ ^{0}$ in the resonance region

M. Gottschall, A. V. Anisovich, B. Bantes +64

The first measurement of the helicity dependence of the photoproduction cross section of single neutral pions off protons is reported for photon energies from 600 to 2300\,MeV, cov…

nucl-ex2014

The N(1520) 3/2- helicity amplitudes from an energy-independent multipole analysis based on new polarization data on photoproduction of neutral pions

J. Hartmann, H. Dutz, A. V. Anisovich +74

New data on the polarization observables T, P, and H for the reaction $I^^{3} p \to p I ¨ ^{0}$ are reported. The results are extracted from azimuthal asymmetries when a transversely polariz…

physics.ins-det2022

Wideband precision stabilization of the -18.6 kV retarding voltage for the KATRIN spectrometer

C. Rodenbeck, S. WÃ¼stling, S. Enomoto +4

The Karlsruhe Tritium Neutrino Experiment (KATRIN) measures the effective electron anti-neutrino mass with an unprecedented design sensitivity of 0.2 eV (90 % C.L.). In this experi…

nucl-ex2017

Evidence for $I^ (2200) 7/ 2^{-}$ from photoproduction and consequence for chiral-symmetry restoration at high mass

A. V. Anisovich, V. Burkert, J. Hartmann +6

We report a partial-wave analysis of new data on the double-polarization variable $E$ for the reactions $I^^{3} p \to I ¨ ^{+} n$ and $I^^{3} p \to I ¨ ^{0} p$ and of further data published earlier. T…

nucl-ex2019

New data on $I^^{3} p \to I^\cdot p$ with polarized photons and protons and their implications for $N^{*} \to N I^\cdot$ decays

J. MÃ¼ller, J. Hartmann, M. GrÃ¼ner +86

The polarization observables $T, E, P, H$ , and $G$ in photoproduction of $I^\cdot$ mesons off protons are measured for photon energies from threshold to $W = 2400$ MeV ( $T$ ), 2280 MeV ($…

nucl-ex2012

Well-established nucleon resonances revisited by double-polarization measurements

A. Thiel, A. V. Anisovich, D. Bayadilov +64

The first measurement is reported of the double-polarization observable G in photoproduction of neutral pions off protons, covering the photon energy range from 620 to 1120 MeV and…

nucl-th2016

The Impact of New Polarization Data from Bonn, Mainz and Jefferson Laboratory on $I^^{3} p \to I ¨ N$ Multipoles

A. V. Anisovich R. Beck, M. DÃ¶ring, M. Gottschall +14

New data on pion-photoproduction off the proton have been included in the partial wave analyses Bonn-Gatchina and SAID and in the dynamical coupled-channel approach JÃ¼lich-Bonn. A…

hep-ph1994

Elimination of the Landau Ghost from Chiral Solitons

J. Hartmann, F. Beck, W. Bentz

We show a practical way based on the KÃ¤llÃ©n-Lehmann representation for the two-point functions to eliminate the instability of the vacuum against formation of small sized meson c…

hep-ph1998

QCD Tests in High Energy Collisions

I. Bertram, T. Carli, G. Gustafson +1

Recent measurements and theoretical developments on the hadronic final state in deep-inelastic scattering, pp and ee collisions are presented.

nucl-ex2023

KATRIN: Status and Prospects for the Neutrino Mass and Beyond

M. Aker, M. Balzer, D. Batzler +159

The Karlsruhe Tritium Neutrino (KATRIN) experiment is designed to measure a high-precision integral spectrum of the endpoint region of T2 beta decay, with the primary goal of probi…

physics.ins-det2021

The Design, Construction, and Commissioning of the KATRIN Experiment

M. Aker, K. AltenmÃ¼ller, J. F. Amsbaugh +226

The KArlsruhe TRItium Neutrino (KATRIN) experiment, which aims to make a direct and model-independent determination of the absolute neutrino mass scale, is a complex experiment wit…

nucl-ex2021

Observation of a structure in the M $_{p I^\cdot}$ invariant mass distribution near 1700 MeV/ $c^{2}$ in the $I^^{3} p \to p I ¨ ^{0} I^\cdot$ reaction

V. Metag, M. Nanova, J. Hartmann +74

The reaction $I^^{3} p \to p I ¨ ^{0} I^\cdot$ has been studied with the CBELSA/TAPS detector at the electron stretcher accelerator ELSA in Bonn for incident photon energies from thresho…

nucl-ex2019

Measurement of the Helicity Asymmetry $E$ for the reaction $I^^{3} p \to I ¨ ^{0} p$

TAPS collaboration, M. Gottschall, F. Afzal +66

A measurement of the double-polarization observable $E$ for the reaction $I^^{3} p \to I ¨ ^{0} p$ is reported. The data were taken with the CBELSA/TAPS experiment at the ELSA facility in Bo…

hep-ex2019

An improved upper limit on the neutrino mass from a direct kinematic method by KATRIN

M. Aker, K. AltenmÃ¼ller, M. Arenz +205

We report on the neutrino mass measurement result from the first four-week science run of the Karlsruhe Tritium Neutrino experiment KATRIN in spring 2019. Beta-decay electrons from…

nucl-ex2018

The Î·'-carbon potential at low meson momenta

M. Nanova, S. Friedrich, V. Metag +58

The production of $I^\cdot^{'}$ mesons in coincidence with forward-going protons has been studied in photon-induced reactions on $^{12}$ C and on a liquid hydrogen (LH $_{2}$ ) target for…

physics.plasm-ph2018

A novel approach to electron data background treatment in an online wide-angle spectrometer for laser-accelerated ion and electron bunches

F. H. Lindner, J. H. Bin, F. Englbrecht +12

Laser-based ion acceleration is driven by electrical fields emerging when target electrons absorb laser energy and consecutively leave the target material. A direct correlation bet…

nucl-ex2016

Double-polarization observable G in neutral-pion photoproduction off the proton

A. Thiel, H. Eberhardt, M. Lang +69

This paper reports on a measurement of the double-polarization observable G in $I ¨ ^{0}$ photoproduction off the proton using the CBELSA/TAPS experiment at the ELSA accelerator in Bon…

nucl-ex2016

Momentum dependence of the imaginary part of the $I ¨ $ - and $I^\cdot^{'}$ -nucleus optical potential

S. Friedrich, M. Nanova, V. Metag +57

The photoproduction of $I ¨ $ and $I^\cdot^{'}$ mesons off carbon and niobium nuclei has been measured as a function of the meson momentum for incident photon energies of 1.2-2.9 GeV a…

nucl-ex2014

Experimental constraints on the $I ¨ $ -nucleus real potential

S. Friedrich, K. Makonyi, V. Metag +61

In a search for $I ¨ $ mesic states, the production of $I ¨ $ -mesons in coincidence with forward going protons has been studied in photon induced reactions on $^{12}$ C for incident pho…

nucl-ex2013

Determination of the Î·'-nucleus optical potential

M. Nanova, V. Metag, E. Ya. Paryev +59

The excitation function and momentum distribution of $I^\cdot^{'}$ mesons have been measured in photon induced reactions on $^{12}$ C in the energy range of 1250-2600 MeV. The exper…

nucl-ex2017

Photoproduction of eta mesons from the neutron: cross sections and double polarization observable E

L. Witthauer, M. Dieterle, F. Afzal +70

Photoproduction of $I^\cdot$ mesons from neutrons} \abstract{Results from measurements of the photoproduction of $I^\cdot$ mesons from quasifree protons and neutrons are summarized. The expe…

physics.ins-det2019

Technical Design Report for the PANDA Endcap Disc DIRC

Panda Collaboration, F. Davi, W. Erni +460

PANDA (anti-Proton ANnihiliation at DArmstadt) is planned to be one of the four main experiments at the future international accelerator complex FAIR (Facility for Antiproton and I…

nucl-ex2025

Polarization observables in double neutral pion photoproduction

TAPS Collaboration, T. Seifen, J. Hartmann +73

Measurements of target asymmetries and double-polarization observables for the reaction $I^^{3} p \to p I ¨ ^{0} I ¨ ^{0}$ are reported. The data were taken with the CBELSA/TAPS experiment at the…

hep-ex2021

PANDA Phase One

G. Barucca, F. DavÃ¬, G. Lancioni +421

The Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany, provides unique possibilities for a new generation of hadron-, nuclear- and atomic physics experiments. T…

nucl-ex2015

The polarization observables T, P, and H and their impact on $I^^{3} p \to p I ¨ ^{0}$ multipoles

J. Hartmann, H. Dutz, A. V. Anisovich +76

Data on the polarization observables T, P, and H for the reaction $I^^{3} p \to p I ¨ ^{0}$ are reported. Compared to earlier data from other experiments, our data are more precise and extend…

physics.ins-det2023

The new APD-Based Readout of the Crystal Barrel Calorimeter -- An Overview

TAPS Collaboration, C. Honisch, P. Klassen +47

The Crystal Barrel is an electromagnetic calorimeter consisting of 1380 CsI(Tl) scintillators, and is currently installed at the CBELSA/TAPS experiment where it is used to detect d…

physics.ins-det2015

Focal-plane detector system for the KATRIN experiment

J. F. Amsbaugh, J. Barrett, A. Beglarian +48

The focal-plane detector system for the KArlsruhe TRItium Neutrino (KATRIN) experiment consists of a multi-pixel silicon p-i-n-diode array, custom readout electronics, two supercon…

physics.ins-det2019

First operation of the KATRIN experiment with tritium

M. Aker, K. AltenmÃ¼ller, M. Arenz +168

The determination of the neutrino mass is one of the major challenges in astroparticle physics today. Direct neutrino mass experiments, based solely on the kinematics of beta-decay…

physics.ins-det2020

Suppression of Penning discharges between the KATRIN spectrometers

M. Aker, K. AltenmÃ¼ller, A. Beglarian +151

The KArlsruhe TRItium Neutrino experiment (KATRIN) aims to determine the effective electron (anti)neutrino mass with a sensitivity of $0.2 eV/c^{2}$ (90 $%$ C.L.) by precise…

nucl-ex2016

Determination of the real part of the Î·'-Nb optical potential

M. Nanova, S. Friedrich, V. Metag +51

The excitation function and momentum distribution of Î·' mesons have been measured in photoproduction off 93^Nb in the energy range of 1.2-2.9 GeV. The experiment has been performe…

Publications (31)

Measurement of double polarisation asymmetries in I¨-photoproduction

First measurement of the helicity asymmetry for I^3p→pI¨0 in the resonance region

The N(1520) 3/2- helicity amplitudes from an energy-independent multipole analysis based on new polarization data on photoproduction of neutral pions

Wideband precision stabilization of the -18.6 kV retarding voltage for the KATRIN spectrometer

Evidence for I^(2200)7/2− from photoproduction and consequence for chiral-symmetry restoration at high mass

New data on I^3p​→I^⋅p with polarized photons and protons and their implications for N∗→NI^⋅ decays

Well-established nucleon resonances revisited by double-polarization measurements

The Impact of New Polarization Data from Bonn, Mainz and Jefferson Laboratory on I^3p→I¨N Multipoles

Elimination of the Landau Ghost from Chiral Solitons

QCD Tests in High Energy Collisions

KATRIN: Status and Prospects for the Neutrino Mass and Beyond

The Design, Construction, and Commissioning of the KATRIN Experiment

Observation of a structure in the MpI^⋅​ invariant mass distribution near 1700 MeV/c2 in the I^3p→pI¨0I^⋅ reaction

Measurement of the Helicity Asymmetry E for the reaction I^3p→I¨0p

An improved upper limit on the neutrino mass from a direct kinematic method by KATRIN

The Î·'-carbon potential at low meson momenta

A novel approach to electron data background treatment in an online wide-angle spectrometer for laser-accelerated ion and electron bunches

Double-polarization observable G in neutral-pion photoproduction off the proton

Momentum dependence of the imaginary part of the I¨- and I^⋅′-nucleus optical potential

Experimental constraints on the I¨-nucleus real potential

Determination of the Î·'-nucleus optical potential

Photoproduction of eta mesons from the neutron: cross sections and double polarization observable E

Technical Design Report for the PANDA Endcap Disc DIRC

Polarization observables in double neutral pion photoproduction

PANDA Phase One

The polarization observables T, P, and H and their impact on I^3p→pI¨0 multipoles

The new APD-Based Readout of the Crystal Barrel Calorimeter -- An Overview

Focal-plane detector system for the KATRIN experiment

First operation of the KATRIN experiment with tritium

Suppression of Penning discharges between the KATRIN spectrometers

Determination of the real part of the Î·'-Nb optical potential

Measurement of double polarisation asymmetries in $I ¨ $ -photoproduction

First measurement of the helicity asymmetry for $I^^{3} p \to p I ¨ ^{0}$ in the resonance region

Evidence for $I^ (2200) 7/ 2^{-}$ from photoproduction and consequence for chiral-symmetry restoration at high mass

New data on $I^^{3} p \to I^\cdot p$ with polarized photons and protons and their implications for $N^{*} \to N I^\cdot$ decays

The Impact of New Polarization Data from Bonn, Mainz and Jefferson Laboratory on $I^^{3} p \to I ¨ N$ Multipoles

Observation of a structure in the M $_{p I^\cdot}$ invariant mass distribution near 1700 MeV/ $c^{2}$ in the $I^^{3} p \to p I ¨ ^{0} I^\cdot$ reaction

Measurement of the Helicity Asymmetry $E$ for the reaction $I^^{3} p \to I ¨ ^{0} p$

Momentum dependence of the imaginary part of the $I ¨ $ - and $I^\cdot^{'}$ -nucleus optical potential

Experimental constraints on the $I ¨ $ -nucleus real potential

The polarization observables T, P, and H and their impact on $I^^{3} p \to p I ¨ ^{0}$ multipoles