Measured and simulated Cf(sf)252 prompt neutron-photon competition
نویسندگان
چکیده
منابع مشابه
Isolated Prompt Photon Cross Sections
In ee and in hadron-hadron reactions at collider energies, prompt photons are observed and their cross sections are measured only if the photons are relatively isolated in phase space. Isolation is required to reduce various hadronic backgrounds including those from the electromagnetic decay of mesons, e.g., π → 2γ. The essence of isolation is that a cone of half-angle δ is drawn about the dire...
متن کاملPrompt-photon production in DIS
In the study of high energy collisions involving hadrons, events in which isolated high-energy photons (often referred to as prompt photons if originating from quarks) are observed provide a direct probe of the underlying parton process, since the emission of these photons is unaffected by parton hadronisation. Isolated high-energy photon production has been studied in hadronic collisions[2] an...
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We introduce a general expression which enables the parton distribution, unintegrated over the parton transverse momentum, to be obtained from the conventional parton densities. We use the formalism to study the effects of the transverse momentum qt of the incoming partonic system on the calculation of the transverse momentum spectra of prompt photons produced in high energy pp and pp̄ collision...
متن کاملPrompt Photon Production at the Tevatron
In Leading Order (LO) prompt photons originating in the hard interaction between two partons are produced mainly via quark-gluon Compton scattering (qg → qγ) or quark–anti-quark annihilation (qq̄ → gγ). Studies of direct photons with large transverse momenta, pγT , provide precision tests of perturbative QCD (pQCD) as well as information on the distribution of partons within protons, particularl...
متن کاملPrompt photon processes in photoproduction at HERA
We present results for the photoproduction of inclusive prompt photons and for prompt photons accompanied by jets, measured with the ZEUS detector at HERA. Cross sections as a function of pseudorapidity and transverse energy are presented for 5 < E T < 10 GeV, E jet T > 5 GeV in the centre of mass energy range 120–270 GeV. Comparisons are made with predictions from leading logarithm parton show...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2018
ISSN: 2469-9985,2469-9993
DOI: 10.1103/physrevc.97.044622