There are two mass generating mechanisms in the standard model of particle physics (SM).
One is related to the Higgs boson and fairly well understood. The other is embedded in …

Direct real photons are arguably the most versatile tools to study relativistic heavy ion
collisions. They are produced, by various mechanisms, during the entire space-time history …

The gluon and sea distributions of the pion are uniquely determined by the requirement of a
valence-like structure of the input parton distributions at some low resolution scale. These …

In the light of the new prompt-photon data collected by PHENIX at RHIC and by D0 at the run
II of the Tevatron, we revisit the world prompt-photon data, both inclusive and isolated, in …

Using constituent quark model constraints we calculate the gluon and sea–quark content of
pions solely in terms of their valence density (fixed by πN Drell–Yan data) and the known …

A common fit is performed to lepton-hadron deep-inelastic scattering and large-p T direct-
photon cross sections, using complete beyond-leading-logarithm QCD expressions. For …

arXiv:1808.00848v6 [hep-ex] 25 Jan 2019 Page 1 EUROPEAN ORGANIZATION FOR
NUCLEAR RESEARCH CERN-SPSC-2019–003 SPSC-I-250 January 28, 2019 Letter of Intent …

We discuss fixed target and ISR inclusive photon production and attempt a comparison
between theory and experiments. The dependence of the theoretical predictions on the …

Direct photons have been proposed as a promising signature for the quark–gluon plasma
(QGP) formation in relativistic heavy-ion collisions. Recently WA98 presented the first data …

The production of leading neutrons, where the neutron carries a large fraction x L of the
incoming proton's longitudinal momentum, is studied in deep-inelastic positron-proton …