Study of the gamma p --> pi0 pi0 p reaction with the Crystal Ball/TAPS at the Mainz

Abstract

The gamma p --> pi0 pi0 p reaction has been measured from threshold to 1.4 GeV using the Crystal Ball and TAPS photon spectrometers together with the photon tagging facility at the Mainz Microtron. The experimental results include total and differential cross sections as well as specific angular distributions, which were used to extract partial-wave amplitudes. In particular, the energy region below the D13(1520) resonance was studied.

arXiv comment12 pages, 13 figures, corrected version, published in PRC

References in corpus (21)

• Baryon Resonance Extraction from piN Data using a Unitary Multichannel Model
• Upgrade of the Glasgow photon tagging spectrometer for Mainz MAMI-C
• Study of the gp-->etap reaction with the Crystal Ball detector at the Mainz Microtron(MAMI-C)
• Double Pion Photoproduction on the Nucleon: Study of the Isospin Channels
• New results on the Roper resonance and the P_{11} partial wave
• In-medium modifications of the $\pi \pi$ interaction in photon-induced reactions
• N* and Delta* decays into N pi0 pi0
• Measurement of the Slope Parameter $\alpha$ for the $\eta \to 3{\pi }^0$ decay with the Crystal Ball detector at the Mainz Microtron (MAMI-C)
• Beam-Helicity Asymmetries in Double-Charged-Pion Photoproduction on the Proton
• The $\sigma$ meson in a nuclear medium through two pion photoproduction
• Photoproduction of pi^0 eta on protons and the Delta(1700)D_{33} resonance
• Addendum to "A Phenomenological Description of pi- Delta++ photoproduction and electroproduction in nucleon resonance region"
• A Phenomenological Description of (π^{-}Δ^{++}) Photo- and Electroproduction in Nucleon Resonance Region
• Beam-Helicity Asymmetries in Double Pion Photoproduction off the Proton
• Radiative pi0 photoproduction on protons in the Delta+(1232) region
• Photoabsorption on a Nucleon in the D_{13} Resonance Energy Region
• Double ${\pi }^0$ Photoproduction off the Proton at Threshold
• Double and single pion photoproduction within a dynamical coupled-channels model
• Double neutral pion photoproduction at threshold
• Helicity asymmetries in double pion photoproduction on the proton
• Analysis of angular distributions in gamma N \to pi0 eta N

Cited by in corpus (29)

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• High statistics study of the reaction $\gamma p\to p2{\pi }^0$
• Light Baryon Spectroscopy
• Measurement of the omega -> pi^0 e^+e^- and eta -> e^+e^-g Dalitz decays with the A2 setup at MAMI
• Photoproduction Reactions and Non-Strange Baryon Spectroscopy
• A new determination of the eta transition form factor in the Dalitz decay eta -> e^+ e^- gamma with the Crystal Ball/TAPS detectors at the Mainz Microtron
• Photoproduction of pi0pi0 and pi0pi+-pairs off the proton from threshold to the second resonance region
• First results on nucleon resonance photocouplings from the $\gamma p\to {\pi }^{+}{\pi }^{-}p$ reaction
• Measurement of the beam-helicity asymmetry $I^{\odot }$ in the photoproduction of ${\pi }^0$-pairs off the proton and off the neutron
• The polarization observables T, P, and H and their impact on $\gamma p\to p{\pi }^0$ multipoles
• A new measurement of the rare decay eta -> pi^0 gamma gamma with the Crystal Ball/TAPS detectors at the Mainz Microtron
• Measurement of the ${}^{1}H$($\vec{\gamma }$, $\vec{p}$)${\pi }^0$ reaction using a novel nucleon spin polarimeter
• Measurement of the beam-helicity asymmetry $I^{\odot }$ in the photoproduction of ${\pi }^0{\pi }^{\pm }$-pairs off protons and off neutrons
• Photoproduction ofeta-pi pairs off nucleons and deuterons
• Study of the $\gamma p\to {\pi }^0\eta p$ reaction with the A2 setup at MAMI
• Coherent pi0-pi0 photoproduction on lightest nuclei
• Evidence of a dibaryon spectrum in coherent ${\pi }^0{\pi }^{0}d$ photoproduction at forward deuteron angles
• Observation of a structure in the M${}_{p\eta }$ invariant mass distribution near 1700 MeV/$c^2$ in the $\gamma \mathbf{p}\to \mathbf{p}{\pi }^0\eta$ reaction
• Minimal complete sets for two pseudoscalar meson photoproduction
• First measurement of helicity-dependent cross sections in pi0-eta photoproduction from quasi-free nucleons
• Helicity-dependent cross sections for the photoproduction of ${\pi }^0$ pairs from nucleons
• Study of the partial wave structure of ${\pi }^0\eta$ photoproduction on protons
• An event mixing technique for Bose-Einstein correlations of two pions in photoproduction around 1 GeV
• Nucleon resonances with spin $\frac{3}{2}$ and isospin $\frac{1}{2}$
• A Truncated partial wave analysis of a complete experiment for photoproduction of two pseudoscalar mesons on a nucleon
• Measurement of the beam-helicity asymmetry in photoproduction of ${\pi }^0\eta$ pairs on carbon, aluminum, and lead
• Complete experiment problem for photoproduction of two pseudoscalar mesons on a nucleon in a truncated partial-wave analysis
• Quasi-free photoproduction of pion-pairs off protons and neutrons