Results 11 to 20 of about 397,296 (294)

Isolated photon and photon+jet production at NNLO QCD accuracy

Journal of High Energy Physics, 2020
We describe the calculation of the next-to-next-to-leading order (NNLO) QCD corrections to isolated photon and photon-plus-jet production, and discuss how the experimental hadron-level photon definition and isolation criteria can be approximated in the ...
Xuan Chen, Thomas Gehrmann, Nigel Glover, Marius Höfer, Alexander Huss   +4 more
doaj   +1 more source

Photon-Photon Interaction in Glueball Production [PDF]

International Journal of Modern Physics: Conference Series, 2017
In the last years many exotic states have been identified in several colliders around the world. One of the exotic states provided in QCD is the glueball. Using a non-relativistic gluon bound-state model, we compute [Formula: see text], where [Formula: see text] is a pseudoscalar, tensor, or scalar digluon.
Daniel T. da Silva, Mario L. L. da Silva, Dimiter Hadjimichef   +2 more
openaire   +1 more source

Quadrupole radiation and e+e− pair production in the collision of nonrelativistic nuclei

Physics Letters B, 2021
We analyze the one-photon mechanism of e+e− pair production in the collision of nonrelativistic nuclei. The contribution of electric quadrupole radiation of virtual photon to the corresponding cross section is found. The effect of the finite nuclear size
I.V. Obraztsov, A.I. Milstein
doaj   +1 more source

Jet Production in Photon-Photon Interactions

Zeitschrift f�r Physik C Particles and Fields, 1987
We present results on jet production in γγ interactions where both photons are quasi-real. The invariant masses of the hadronnic system are limited to the range 4≦W$_{vis}$≦12 GeV/c$^2$. The data approach the quark-Parton-Model (QPM) expectation at the highestpTjet values (≧4 GeV/c).
berger, Ch., Genzel, H., Deuter, A., Ferrarotto, F., Franke, G., Gaspero, M., Gerke, Ch., Knies, G., Lewendel, B., Meyer, J., Michelson, U., Pape, K. H., Lackas, W., Stella, B., Timm, U., Winter, G. G., Zachara, M., Zimmermann, W., Bussey, P. J., Cartwright, S. L., Dainton, J. B., Hendry, D., King, B. T., Pielorz, J., Raine, C., Scarr, J. M., Skillicorn, I. O., Poppe, K. M., Thomson, J. C., Achterberg, O., Blobel, V., Burkart, D., Diehlmann, K., Feindt, M., Raupach, F., Kapitza, H., Koppitz, B., Kröger, M., Poppe, M., Spitzer, H., Staa, R., Chang, C. Y., Glasser, R. G., Kellogg, R. G., Maxfield, S. J., Wagner, W., Polvado, R. O., Sechi-Zorn, B., Skard, J. A., Skuja, A., Tylka, A. J., Welch, G. E., Zorn, G. T., Almeida, F., Becker, A., Barreiro, F., Klovning, A., Brandt, S., Derikum, K., Grupen, C., Meyer, H. J., Müller, H., Neumann, B., Rost, M., Stupperich, K., Zech, G., Alexander, G., Lillestol, E., Bella, G., Gnat, Y., Grunhaus, J., Junge, H., Kraski, K., Maxeiner, C., Maxeiner, H., Meyer, H., Schmidt, D., PLUTO Collaboration, Börger, J., Criegee, L.   +79 more
openaire   +3 more sources

Cosmological relaxation through the dark axion portal

Journal of High Energy Physics, 2022
The dark axion portal is a coupling of an axion-like particle to a dark photon kinetically mixed with the visible photon. We show how this portal, when applied to the relaxion, can lead to cosmological relaxation of the weak scale using dark photon ...
Valerie Domcke, Kai Schmitz, Tevong You
doaj   +1 more source

Jet production by virtual photons [PDF]

The European Physical Journal C, 2000
1+36 pages, LaTeX2e, 63 eps figures, submitted to Eur. Phys.
Friberg, Christer, Sjöstrand, Torbjörn
openaire   +5 more sources

Simulating hard photon production with Whizard

European Physical Journal C: Particles and Fields, 2020
One of the important goals of the proposed future $$\hbox {e}^{+}\hbox {e}^{-}$$ e+e- collider experiments is the search for dark matter particles using different experimental approaches.
J. Kalinowski, W. Kotlarski, P. Sopicki, A. F. Żarnecki   +3 more
doaj   +1 more source

Jet and hadron production in photon-photon collisions [PDF]

, 1999
Di-jet and inclusive charged hadron production cross-sections measured in photon-photon collisions by OPAL are compared to NLO pQCD calculations. Jet shapes measured in photon-photon scattering by OPAL, in deep-inelastic ep scattering by H1 and in photon-
Abramowicz, Ackerstaff, Adachi, Apsimon, Aurenche, Binnewies, Breitweg, Derrick, Drees, Glück, Glück, Gordon, Gordon, Klasen, Schuler, Stefan Söldner-Rembold   +15 more
core   +2 more sources

Vector-vector production in photon-photon interactions [PDF]

AIP Conference Proceedings, 1989
Measurements of exclusive untagged ρ0ρ0,ρφ,K*K*, and ρω production and tagged ρ0ρ0 production in photon‐photon interactions by the TPC/Two‐Gamma experiment are reviewed. Comparisons to the results of other experiments and to models of vector‐vector production are made.
openaire   +2 more sources

Pre-equilibrium Photon and Dilepton Production [PDF]

EPJ Web of Conferences
We use QCD kinetic theory to compute photon and dilepton production in the chemically equilibrating out-of-equilibrium quark-gluon plasma created in the early stages of high-energy heavy-ion collisions.
Garcia-Montero Oscar, Mazeliauskas Aleksas, Plaschke Philip, Schlichting Sören   +3 more
doaj   +1 more source