Zobrazeno 1 - 10
of 4 412
pro vyhledávání: '"two-gluon"'
We find the general structure for the two-gluon one-photon vertex in the presence of a constant magnetic field. We show that, when accounting for the symmetries satisfied by the strong and electromagnetic interactions under parity, charge conjugation
Externí odkaz:
http://arxiv.org/abs/2406.18673
Autor:
Ayala, Alejandro, Castaño-Yepes, Jorge David, Hernández, L. A., Mizher, Ana Julia, Tejeda-Yeomans, María Elena, Zamora, R.
Having in mind the pre-equilibrium stage in peripheral heavy-ion collisions as a possible scenario for the production of electromagnetic radiation, we compute the two-gluon one-photon vertex in the presence of an intense magnetic field at one-loop or
Externí odkaz:
http://arxiv.org/abs/2209.09364
Autor:
Cisek, Anna, Szczurek, Antoni
Publikováno v:
Phys. Rev. D 103, 114008 (2021)
We discuss gluon-gluon mechanisms for production of mesons with hidden strangeness, such as $\eta'$ and $\phi$ meson, in proton-proton collisions at large energies. The $g^* g^* \to \eta'$ and $g^* g^* \to \phi g$ mechanisms are considered only and t
Externí odkaz:
http://arxiv.org/abs/2103.08954
The near-threshold photoproduction of $J/\psi$ is regarded as one golden process to unveil the nucleon mass structure, pentaquark state involving the charm quarks, and the poorly constrained gluon distribution of the nucleon at large $x$ ($>0.1$). In
Externí odkaz:
http://arxiv.org/abs/2008.13439
Autor:
Cao, Hui-Yun, Zhou, Hai-Qing
Publikováno v:
Phys. Rev. D 100, 094004 (2019)
In this work, we calculate the nonrelativistic asymptotic behavior of the amplitudes of $q\overline{q}\rightarrow 2g \rightarrow q\overline{q}$ in the leading order of $\alpha_s$ (LO-$\alpha_s$) with $q\overline{q}$ in the $^3P_J$ channels. In the pr
Externí odkaz:
http://arxiv.org/abs/1905.07708
Publikováno v:
Phys. Rev. D 97, 094021 (2018)
We show that, in the saturation/Color Glass Condensate framework, odd azimuthal harmonics of the two-gluon correlation function with a long-range separation in rapidity are generated by the higher-order saturation corrections in the interactions with
Externí odkaz:
http://arxiv.org/abs/1802.08166
Autor:
Cao, Hui-Yun, Zhou, Hai-Qing
Publikováno v:
Phys. Rev. D 99, 074007 (2019)
In this work, the non-relativistic asymptotic behavior of the transition $q\overline{q}\rightarrow2g\rightarrow q\overline{q}$ in the $^1S_0$ channel is discussed. Different with the usual calculation which expands the physical amplitude around the q
Externí odkaz:
http://arxiv.org/abs/1811.07634
Autor:
Pleitez, V.
In this work we obtain all the allowed values of the angular momentum and parity for two massless non-Abelian fields. In particular, we show that, unlike the two photons system, two gluons can be in a state with $J^P=1^\pm$, $(2k)^-$, and $(2k+1)^-$,
Externí odkaz:
http://arxiv.org/abs/1801.09294
Autor:
Rasoanaivo, A. N., Horowitz, W. A.
We derive the momentum distribution for two soft and collinear gluons emitted from an off-shell quark, modeled by a $q\gamma\rightarrow qgg$ scattering process and computed using the maximal helicity violating (MHV) technique. We find the explicit no
Externí odkaz:
http://arxiv.org/abs/1712.06292
In the framework of Color Glass Condensate (CGC) effective field theory (EFT), we calculate two-gluon rapidity correlations in the leading and sub-leading orders of $p_\perp/Q_s$. In the leading order, both short- and long-range rapidity correlations
Externí odkaz:
http://arxiv.org/abs/1709.08678