[PDF] Top 20 Photoproduction of the f(1) (1285) meson

... We also examined the choice of mass range used to define the signal and sideband regions. There is unavoidably some signal present in the sideband regions from the tails of the x meson. This leads, however, to a ... See full document

... = 1 2 , for instance, N(1440)1 / 2 + , N(1535)1 / 2 − , and N(1650)1 / 2 − vary from 25% to 140% ...A 1/2 and A 3/2 proton decay amplitudes of the N(1720)3/2 + state are ... See full document

... and F asym- metries [18] together with previous data for T ...and F are in poor agreement among themselves and with our experimental data, even though they describe the unpolarized differential cross ... See full document

... A noteworthy feature of the process (1) is that, at dominant twist, separating the transverse (respec- tively longitudinal) polarization of the ρ meson allows one to get access to chiral-odd (respectively ... See full document

... resolution meson photoproduction experiments like A2 at MAMI, CLAS at JLab, Crystal Barrel at ELSA or LEPS at SPring-8 set out to finally solve the so- called missing resonance problem of baryon ...were ... See full document

... Another physics topic is the study of hyperon resonances, especially, Λ(1405). It is well known the mass of Λ(1405) is too light if it is an SU(3) three-quark state. Some of the theo- retical models describe Λ(1405) as a ... See full document

... The reaction products are detected with almost 4 covering electromagnetic calorimeters, schematically shown in Fig. 1. Their large angle coverage and good detection properties for photons, neutrons, and charged ... See full document

... the photoproduction of mesons off nucleons in order to understand reaction mechanisms and the relevant degrees of freedom in resonance ...the photoproduction of mesons heavier than the pion and resonances ... See full document

... collaborations have reported a narrow structure at W ≈ 1680 MeV in the total cross section of quasi-free η-photoproduction off the neutron. This structure is not seen on the proton and its nature is up to now still ... See full document

... The background to open beauty production in the selected di-electron sample is dominated by events from inelastic J/ψ-meson production. Other contributions include the production of light quarks and of open charm. ... See full document

... freedom. Photoproduction is expected to be particularly e ff ective in producing exotic hy- brids but there is little data on the photoproduction of light ...on meson production and ... See full document

... Preliminary BGO-OD experimental results [1] (see Fig. 2) demonstrate a high momen- tum resolution of the recoil nucleons from kaon meson production. A principal improvement as compared with GRAAL has been ... See full document

... The spectrum of excited nucleon states reflects the dynamics of QCD in the non-perturbative regime. It has been studied for many years using pion beams. However, the spectrum of known nucleon resonances is in conflict with ... See full document

... With the recent development of the 12 GeV electron beam at Jefferson Lab (JLab) [1, 2], new precision mea- surements of light meson photoproduction and electro- production are expected in the near ... See full document

... ω photoproduction have stimulated the- orists using a variety of approaches to harvest information from this particular channel ...son photoproduction form the bulk of the database for baryon spectroscopy, ... See full document

... Abstract. Within the broad physics programme of the COMPASS collabora- tion at CERN SPS, soft reactions of high-energy hadron beams on different nuclear targets are investigated. Aiming at a better understanding of the ... See full document

... pentaquarks, such as the compact pentaquark [2–5] and the hadronic molecule [6–14]. On the other hand, the threshold enhancement by the anomalous triangle singularity is discussed in Refs. [16–18]. Hadronic molecules are ... See full document

... a 1-D water column model (Bruggeman and Bolding, 2014) and com- pare simulated concentrations to observations at stations 2, 5, 7, and ...a 1-D water column model simulating hy- drodynamic and thermodynamic ... See full document

... Abstract. The horizontal and complete lifts from a differentiable manifold of class C ∞ to its co- tangent bundle T * (M n ) have been studied by Yano and Patterson [4, 5]. Yano and Ishihara [6] studied lifts of an ... See full document

... DX176743 1 1285 tif University of Huddersfield Repository Roper, Angela Jane Hotel consortia strategies and structure; an analysis of the emergence of hotel consortia as transorganisational forms Orig[.] ... See full document