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Measurement of k-p → ηΛ near threshold
- A. Starostin, B. Nefkens, +35 authors S. Stanislaus
- Physics
- 18 October 2001
We present measurements of the differential and total cross sections and the Λ polarization for the reaction K−p→ηΛ from threshold to pK−=770MeV/c, with much better precision than previous… Expand
Accurate test of chiral dynamics in the γp→π0p reaction.
- D. Hornidge, P. Aguar Bartolomé, +64 authors L. Witthauer
- Physics, Medicine
- Physical review letters
- 7 August 2013
A precision measurement of the differential cross sections dσ/dΩ and the linearly polarized photon asymmetry Σ≡(dσ⊥-dσ∥)/(dσ⊥+dσ∥) for the γp→π0p reaction in the near-threshold region has been… Expand
Neutron skin of (208)pb from coherent pion photoproduction.
- C. Tarbert, D. Watts, +58 authors F. Zehr
- Physics, Medicine
- Physical review letters
- 1 November 2013
Information on the size and shape of the neutron skin on (208)Pb is extracted from coherent pion photoproduction cross sections measured using the Crystal Ball detector together with the Glasgow… Expand
Photoproduction of π0π0 - and π0π+ -pairs off the proton from threshold to the second resonance region
- F. Zehr, B. Krusche, +60 authors D. Watts
- Physics
- 10 July 2012
Precise total cross-sections and invariant-mass distributions have been measured for photoproduction of pion pairs off the proton producing $\ensuremath p\pi^0\pi^0$ and $\ensuremath n\pi^+\pi^0$… Expand
Determination of the quadratic slope parameter in eta-->3pi(0) decay.
- W. B. Tippens, S. Prakhov, +35 authors H. Staudenmaier
- Physics, Medicine
- Physical review letters
- 5 November 2001
We have determined the quadratic slope parameter alpha for eta-->3pi(0) to be alpha = -0.031(4) from a 99% pure sample of 10(6)eta-->3pi(0) decays produced in the reaction pi(-)p-->n(eta) close to… Expand
Narrow structure in the excitation function of η photoproduction off the neutron.
- D. Werthmüller, L. Witthauer, +69 authors D. Watts
- Physics, Medicine
- Physical review letters
- 12 November 2013
The photoproduction of η mesons off nucleons bound in 2H and 3He has been measured in coincidence with recoil protons and recoil neutrons for incident photon energies from threshold up to 1.4 GeV.… Expand
Measurement of the 1H(γ, p)π0 reaction using a novel nucleon spin polarimeter.
We report the first large-acceptance measurement of polarization transfer from a polarized photon beam to a recoiling nucleon. The measurement pioneers a novel polarimetry technique, which can be… Expand
Measurement of the invariant-mass spectrum for the two photons from the η→π0γγ decay
- S. Prakhov, B. Nefkens, +30 authors I. Supek
- Physics
- 1 July 2008
New results on the rare, doubly radiative decay η →π 0 γγ have been obtained from a revised analysis of the Crystal Ball experiment performed at the AGS. The analysis yields the first information on… Expand
Quasi-free photoproduction of η-mesons off 3He nuclei
- L. Witthauer, D. Werthmüller, +71 authors the A2 Collaboration Crystal BallTAPS experiment at MAMI
- Physics
- 5 December 2013
Quasi-free photoproduction of η-mesons has been measured off nucleons bound in 3He nuclei for incident photon energies from the threshold region up to 1.4 GeV. The experiment was performed at the… Expand
A study of charge-symmetry violation in π+ and π− elastic scattering from 3H and 3He
Abstract New data on the charge-symmetric superratio R and the simple ratios r′1 and r′2 are reported for π+ and π− elastic scattering from 3H and 3He at Tπ=142, 180, and 220 MeV at θπ(lab) from 40°… Expand
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