Results 41 to 50 of about 1,011 (161)

χ c2 tensor meson transition form factors in the light front approach

open access: yesJournal of High Energy Physics
We continue our work on the light-front formulation of quarkonium γ ∗ γ transition form factors, extending the formalism to J PC = 2++ tensor meson states.
Izabela Babiarz   +3 more
doaj   +1 more source

Perturbative calculations of gravitational form factors at large momentum transfer

open access: yesJournal of High Energy Physics, 2022
We perform a perturbative QCD analysis of the gravitational form factors (GFFs) of nucleon at large momentum transfer. We derive the explicit factorization formula of the GFFs in terms of twist-3 and twist-4 light-cone distribution amplitudes of nucleon.
Xuan-Bo Tong, Jian-Ping Ma, Feng Yuan
doaj   +1 more source

Radiative transitions of χ cJ → ψγ and χ bj → Υγ

open access: yesJournal of High Energy Physics
In the framework of instantaneous Bethe-Salpeter equation, according to the J PC of quarkonia, we find that their wave functions all contain multiple partial waves, rather than pure waves.
Su-Yan Pei   +3 more
doaj   +1 more source

Hadronic vacuum polarization and the MUonE proposal

open access: yesJournal of High Energy Physics, 2022
The MUonE proposal at the CERN SPS consists in extracting the value of the hadronic vacuum polarization self-energy function (HVP) from its contribution to the differential cross-section of elastic muon-electron scattering.
David Greynat, Eduardo de Rafael
doaj   +1 more source

Next-to-leading-power kinematic corrections to DVCS: a scalar target

open access: yesJournal of High Energy Physics, 2023
Using the recent results on the contributions of descendants of the leading twist operators to the operator product expansion of two electromagnetic currents we derive explicit expressions for the kinematic finite-t and target mass corrections to the ...
V. M. Braun, Yao Ji, A. N. Manashov
doaj   +1 more source

Meson properties in dense hadronic matter [PDF]

open access: yesNuclear Physics A, 2002
Proc. Third Int. Conf.
openaire   +2 more sources

Nodal mechanism for the suppressed D D ¯ $$ D\overline{D} $$ decay of ψ(4040) in the Bethe-Salpeter framework

open access: yesJournal of High Energy Physics
The strong decay ψ(4040) → D D ¯ $$ D\overline{D} $$ is anomalously suppressed despite ample phase space, whereas the D D ¯ ∗ $$ D{\overline{D}}^{\ast } $$ and D s D ¯ s $$ {D}_s{\overline{D}}_s $$ channels remain sizable.
Bing-Dong Wan, Sheng-Qi Zhang
doaj   +1 more source

Underlying-event properties in pp and p–Pb collisions at s NN $$ \sqrt{s_{\textrm{NN}}} $$ = 5.02 TeV

open access: yesJournal of High Energy Physics, 2023
We report about the properties of the underlying event measured with ALICE at the LHC in pp and p–Pb collisions at s NN $$ \sqrt{s_{\textrm{NN}}} $$ = 5.02 TeV.
The ALICE collaboration   +1031 more
doaj   +1 more source

The dimensional properties of the hadron

open access: yes, 2010
The statistical model of the hadron as a quarkonium system suggests the dimensional dependence of some of the properties of the hadron like the scaling in its probability density with the anomalous dimension as the exponent,the universality, the power law scaling in transverse momentum in hadron production.Recent experimental findings are found to be ...
Mukherjee, S., Banerjee, S. N.
openaire   +2 more sources

Azimuthal asymmetries in lepton and heavy-quark pair production in UPCs

open access: yesJournal of High Energy Physics
Azimuthal modulations in lepton and heavy-quark pair production in ultraperipheral collisions (UPCs) of highly charged ions are investigated. The modulations in the azimuthal angles of the sum and difference of the transverse momenta of the pair of ...
Daniël Boer   +2 more
doaj   +1 more source

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