Results 41 to 50 of about 27,900 (194)

The dependence of dijet production on photon virtuality in ep collisions at HERA [PDF]

open access: yes, 2004
The dependence of dijet production on the virtuality of the exchanged photon, Q^2, has been studied by measuring dijet cross sections in the range 0 < Q^2 < 2000 GeV^2 with the ZEUS detector at HERA using an integrated luminosity of 38.6 pb^-1.
Abramowicz, H   +333 more
core   +8 more sources

Real photons produced from photoproduction in $pp$ collisions

open access: yes, 2012
We calculate the production of real photons originating from the photoproduction in relativistic $pp$ collisions. The Weizs$\ddot{\mathrm{a}}$cker-Williams approximation in the photoproduction is considered.
Baur G   +6 more
core   +1 more source

eta-photoproduction in the resonance energy region [PDF]

open access: yes, 2006
The $\eta$ production in the nucleon resonance energy region is studied within the unitary coupled-channels effective Lagrangian approach of the Giessen model.
Arndt   +36 more
core   +2 more sources

Combined analysis of K−p reactions and πΣ photoproduction data [PDF]

open access: yesEPJ Web of Conferences
We discuss results of a simultaneous fit to the K−p reactions and πΣ photoproduction data employing an approach that combines tree level photoproduction amplitudes with πΣ − KN coupled channel model describing the meson-baryon rescattering in the final ...
Cieplý Aleš, Bruns Peter C.
doaj   +1 more source

Direct vs. final state tensor meson photoproduction - amplitude analysis

open access: yesEPJ Web of Conferences, 2014
Tensor meson photoproduction is described as either a direct production process or a consequence of the final state ππ interactions. We calculate the mass distributions for selected partial waves and confront our predictions with the measurements of the ...
Bibrzycki Łukasz, Kamiński Robert
doaj   +1 more source

Photon beam asymmetry Σ for η and η′ photoproduction from the proton

open access: yesPhysics Letters B, 2017
Measurements of the linearly-polarized photon beam asymmetry Σ for photoproduction from the proton of η and η′ mesons are reported. A linearly-polarized tagged photon beam produced by coherent bremsstrahlung was incident on a cryogenic hydrogen target ...
P. Collins   +142 more
doaj   +1 more source

Photoproduction of P-wave doubly charmed baryon at future e + e − collider

open access: yesJournal of High Energy Physics, 2023
The photoproduction of P-wave doubly charmed baryon (Ξ cc ) is investigated in the context of future high-energy and high-luminosity e + e − colliders. The direct photoproduction via the sub-process γ + γ → Ξ cc + c ¯ + c ¯ $$ \gamma +\gamma \to {\Xi}_ ...
Xi-Jie Zhan   +2 more
doaj   +1 more source

Generation of High-Brilliance Polarized γ-Rays Via Vacuum Dichroism-Assisted Vacuum Birefringence. [PDF]

open access: yesAdv Sci (Weinh)
A novel method is proposed for generating such γ‐photon beams via the vacuum‐dichroism‐assisted quantum vacuum birefringence effect, only utilizing well‐established unpolarized electron beams and solving the critical problem of demanding polarized ones.
Lv C   +6 more
europepmc   +2 more sources

Incoherent pion photoproduction on the deuteron in the first resonance region [PDF]

open access: yes, 2006
Incoherent pion photoproduction on the deuteron is studied in the first resonance region. The unpolarized cross section, the beam asymmetry, and the vector and tensor target asymmetries are calculated in the framework of a diagrammatic approach.
A. A. Sidorov   +8 more
core   +2 more sources

Pentaquark photoproduction

open access: yesJournal of Physics: Conference Series, 2017
We present results and suggestions on how to confirm the existence and resonant nature of the $Pc(4450)$ detected at LHCb through photoproduction experiments. We find that this narrow structure might have escaped detection in past experiments and use those to give a constraint for the upper limit of the branching ratio/coupling to the $J/ p$ channel.
Fernandez-Ramirez C.   +2 more
openaire   +2 more sources

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