9th International Conference on High Energy Particle and Nuclear Physics in the LHC Era

Session

Parallel session 8: QCD (2/2)

9 Jan 2025, 16:50

Building A (Santa Maria University)

478. ζ-function for a model with spectral dependent boundary conditions

Prof. Marcelo Loewe (Universidad San Sebastian)

09/01/2025, 16:50

parallel

Abstract. We explore the meromorphic structure of the ζ-function associated to
the boundary eigenvalue problem of a modified Sturm-Liouville operator subject to
spectral dependent boundary conditions at one end of a segment of length l. We
find that it presents isolated simple poles which follow the general rule valid for second
order differential subject to standard local boundary...

456. Valence and sea parton correlations in double parton scattering from data

Joao Vitor (Universidade Federal de Santa Catarina)

09/01/2025, 17:10

parallel

The effective cross section of double parton scattering in proton collisions has been measured by many experiments with rather different results.

Motivated by this fact, we assumed that the parton correlations in the transverse plane are different whether we have valence or sea partons.

With this simple approach, we were able to fit the available data and found that sea parton pairs...

463. Photo- and hadroproduction of heavy meson pairs

Marat Siddikov

09/01/2025, 17:30

parallel

In this talk we present our results on the inclusive photo- and hadroproduction of heavy charmonia-bottomonia pairs in the color glass condensate framework. For the photoproduction, we found that the cross section of the process is sensitive only to dipole and quadrupole forward scattering amplitudes (2- and 4-point correlators of Wilson lines). Using the phenomenological parametrizations of...

484. Double Parton Scattering in Ultraperipheral Collisions

Emmanuel Gräve de Oliveira (UFSC, Brazil)

09/01/2025, 17:50

parallel

Double Parton Scattering (DPS) is an important mechanism through which we can investigate the parton distributions of the proton and the nucleus. Although we know that such scatterings occur in high-energy collisions, the formalism describing them lacks answers to questions such as: Is there a universal effective cross section? To address such questions, we investigate DPS in ultraperipheral...