We have implemented the recent extension of the string+${}^3P_0$ model of spin-dependent hadronization that includes the production of spin-$1/2$ baryons in the Pythia event generator for the simulation of deep inelastic scattering (DIS). The implementation in Pythia is performed by extending the StringSpinner package, which is then used to study the spontaneous polarization of $\Lambda$ and $\bar{\Lambda}$ hyperons produced in the current and target fragmentation regions in DIS with an unpolarized proton target. We find a large spontaneous polarization for $\Lambda$s in the target fragmentation region, calling for the measurement of such observable that can shed light on the quark spin dependence of hadronization.
Deep-inelastic scattering (DIS) data on nuclei, from deuterium to lead, indicate that nuclear effects on the partonic structure of bound nucleons are remarkably small around $x=0.3$, where valence-quark distributions peak. We present the results of a global analysis of DIS data on the cross-section ratios $\sigma^A/\si...
We study the production of $c$ and $b$ quarks in photon-induced processes as a probe of gluon saturation, with a focus on the high-energy region accessible in ultra-peripheral collisions (UPCs) at the LHC. We compare predictions for inclusive and diffractive heavy quark production with and without saturation effects by...
Jani Penttala, C. Royon, Jarno Vierros· 0 citations
We present a global two-channel Flatt\'e amplitude analysis of the hidden-charm pentaquark candidates observed by the LHCb collaboration in the J/{\psi}p invariant-mass spectrum using the Run 1+2 dataset. We simultaneously fit the three pentaquark amplitudes to the full spectrum, including a polynomial background and c...
A. Likéné, P. Hebbar, A. F. Rothen et al.· 0 citations
In this contribution we predict the possibility of detecting signatures of the long-sought saturation in ultraperipheral heavy-ion collisions at currently accessible energies of the LHC. To probe these effects, we study incoherent vector meson production, which is sensitive to fluctuations in the partonic structure of...
A. Ridziková, J. Čepila, J. G. Contreras et al.· Proceedings of the Internati...· 0 citations
In the framework of non-relativistic quantum chromodynamics (NRQCD), we systematically investigate the inclusive and exclusive production processes of spin-singlet \(^1S_0\) and spin-triplet \(^3S_1\) toponium at future muon colliders and in Pb--Pb ultraperipheral collisions (Pb--Pb UPC). Using the Coulomb-plus-linear...
We study the structure of leading hadronization effects and the contributions of massive electroweak gauge boson exchange in the $\tau_1$ and $\tau_{1a}$ 1-Jettiness global event shapes for deep inelastic scattering (DIS). The leading hadronization effects in $\tau_1$ acquire a non-trivial dependence on the hard scatte...
R. Boughezal, Hao-Tian Cao, Z. Kang et al.· 1 citation
We use cookies to run the site and, with your consent, for analytics and to show ads.
See our Cookie Policy.
