Results 11 to 20 of about 140,588 (214)

Cross sections for gluon + gluon → heavy quarkonium + gluon [PDF]

Physics Letters B, 1987
Abstract Using the helicity amplitude formalism, we derive simple cross section formulae for the production of heavy quarkonia through the process g+g → ( 2S+1 L J )+ g when L = S or P. Within the framework of perturbative QCD, these subprocesses are important for the hadroproduction of heavy quarkonia.
Gastmans, R., Troost, W., Wu, Tai Tsun
openaire   +2 more sources

Two-loop QCD corrections to gluon–gluon scattering [PDF]

Nuclear Physics B, 2001
20 pages, LaTeX, JHEP class, typo ...
Glover, E. W. N., Oleari, C., Tejeda-Yeomans, M. E.   +2 more
openaire   +3 more sources

The elusive gluon [PDF]

Journal of High Energy Physics, 2015
32 pages, 12 figures.
Mikael Chala, José Juknevich, Gilad Perez, José Santiago   +3 more
openaire   +3 more sources

Asymptotic gluon shadowing [PDF]

Nuclear Physics A, 2000
7 pages, 1 ...
Cano, F., Liuti, S.
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Gluon condensate potentials [PDF]

Nuclear Physics B, 1983
Abstract Attempts to represent the “gluon condensate”, of Shifman, Vainshtein and Zakharov, by a quark-antiquark potential, are critically reviewed. In particular, it is noted that the Leutwyler-Voloshin level shifts, in hydrogen-atom-like heavy quarkonia, are well reproduced by a static potential. But it is mass dependent.
R. A. BERTLMANN, J. S. BELL
openaire   +1 more source

Probing gluon number density with electron-dijet correlations at EIC

European Physical Journal C: Particles and Fields, 2021
We propose a novel way of studying the gluon number density (the so-called Weizsäcker–Williams gluon distribution) using the planned Electron Ion Collider.
A. van Hameren, P. Kotko, K. Kutak, S. Sapeta, E. Żarów   +4 more
doaj   +1 more source

Approximate four-loop QCD corrections to the Higgs-boson production cross section

Physics Letters B, 2020
We study the soft and collinear contributions to inclusive Higgs-boson production in gluon-gluon fusion at four loops. Using recent progress for the quark and gluon form factors and Mellin moments of splitting functions, we are able to complete the soft ...
G. Das, S. Moch, A. Vogt
doaj   +1 more source

Critical coupling for dynamical chiral-symmetry breaking with an infrared finite gluon propagator [PDF]

, 1996
We compute the critical coupling constant for the dynamical chiral-symmetry breaking in a model of quantum chromodynamics, solving numerically the quark self-energy using infrared finite gluon propagators found as solutions of the Schwinger-Dyson ...
A.A Natale, Amundsen, Atkinson, Atkinson, Atkinson, Bernard, Bernard, Cornwall, Cornwall, Cornwall, Cudell, Cudell, Farhi, Field, Fomin, Gay Ducati, Gupta, Habel, Habel, Haeri, Halzen, Hawes, Holdom, Kogut, Krein, Mahanta, Mahanta, Mandula, Marenzoni, Marenzoni, Marenzoni, Nambu, P.S Rodrigues da Silva, Papavassiliou, Parisi, Peskin, Pimbley, Roberts, Roberts, Stingl, Williams, Zwanziger   +41 more
core   +3 more sources

Relevant gluonic energy scale of spontaneous chiral symmetry breaking from lattice QCD [PDF]

, 2010
We analyze which momentum component of the gluon field induces spontaneous chiral symmetry breaking in lattice QCD. After removing the high-momentum or low-momentum component of the gluon field, we calculate the chiral condensate and observe the roles of
A. Salam, Arata Yamamoto, Hideo Suganuma, V. A. Miransky   +3 more
core   +3 more sources

Several Effects Unexplained by QCD

Universe, 2018
Several new experimental discoveries in high energy proton interactions, yet unexplained by QCD, are discussed in the paper. The increase of the cross sections with increasing energy from ISR to LHC, the correlation between it and the behavior of the ...
Igor M. Dremin
doaj   +1 more source