Results 1 to 10 of about 252,628 (218)
Pion Detection Using Single Photon Avalanche Diodes [PDF]
We present the first reported use of a CMOS-compatible single photon avalanche diode (SPAD) array for the detection of high-energy charged particles, specifically pions, using the Super Proton Synchrotron at CERN, the European Organization for Nuclear ...
Anthony Frederick Bulling, Ian Underwood
doaj +2 more sources
Regge analysis of pion-pion (and pion-kaon) scattering for energy s^{1/2}>1.4 GeV [PDF]
We perform a detailed Regge analysis of NN, pion-N and pion-pion scattering. From it, we find expressions that represent the pion-pion scattering amplitudes with an accuracy of a few percent, for exchange of isospin zero, and $\sim15%$ for exchange of isospin 1, and this for energies s^{1/2}> 1.4 GeV and for momentum transfers |t|^{1/2}< 0.4 GeV ...
Pelaez, J. R., Yndurain, F. J.
arxiv +6 more sources
Evaluation of the Axial Vector Commutator Sum Rule for Pion-Pion Scattering [PDF]
We consider the sum rule proposed by one of us (SLA), obtained by taking the expectation value of an axial vector commutator in a state with one pion. The sum rule relates the pion decay constant to integrals of pion-pion cross sections, with one pion off the mass shell.
F. J. Ynduráin+3 more
arxiv +3 more sources
Information on the structure of the rho meson from the pion form-factor [PDF]
The electromagnetic pion form-factor is calculated in a Bethe-Salpeter approach which accounts for pion rescattering. In the scattering kernel the pion-pion contact interaction from lowest-order chiral perturbation theory is considered together with an optional vector meson in the s-channel.
F. Klingl, S. Leupold
arxiv +3 more sources
The pion charge radius from charged pion electroproduction [PDF]
We analyze a low-energy theorem of threshold pion electroproduction which allows one to determine the charge radius of the pion. We show that at the same order where the radius appears, pion loops induce a correction to the momentum dependence of the longitudinal dipole amplitude $L_{0+}^{(-)}$.
A. Liesenfeld+13 more
arxiv +4 more sources
Dispersion relation for hadronic light-by-light scattering: two-pion contributions [PDF]
In this third paper of a series dedicated to a dispersive treatment of the hadronic light-by-light (HLbL) tensor, we derive a partial-wave formulation for two-pion intermediate states in the HLbL contribution to the anomalous magnetic moment of the muon (
Gilberto Colangelo+3 more
doaj +2 more sources
Probing the Symmetry Energy with the Spectral Pion Ratio. [PDF]
Many neutron star properties, such as the proton fraction, reflect the symmetry energy contributions to the equation of state that dominate when neutron and proton densities differ strongly.
J. Estee+62 more
semanticscholar +1 more source
Concerning pion parton distributions [PDF]
Analyses of the pion valence-quark distribution function (DF), , which explicitly incorporate the behaviour of the pion wave function prescribed by quantum chromodynamics (QCD), predict , $$\beta (\zeta \gtrsim m_p)>2$$ β ( ζ ≳ m p ) > 2 , where $$m_p ...
Zhu-Fang Cui+9 more
semanticscholar +1 more source
The analysis of the spatiotemporal picture of particle radiation in relativistic heavy-ion collisions in terms of correlation femtoscopy scales, emission, and source functions allows one to probe the character of the evolution of the system created in ...
Yuri Sinyukov+2 more
doaj +1 more source
In the press of the interwar period, among the group of Warsaw opinion-forming periodicals, the three largest literary and social weeklies dominated – the liberal Wiadomości Literackie, the pro-Sanacja Pion and the right-wing Prosto z Mostu.
Małgorzata Bańkowska
doaj +1 more source