We present a phenomenological study of exotic fully heavy tetraquark production based on the TQ4Q1.1 set of collinear, variable-flavor-number-scheme fragmentation functions. Our analysis covers scalar ($0^{++}$), axial-vector ($1^{+-}$), and tensor ($2^{++}$) configurations, incorporating single-parton fragmentation at leading power within a nonrelativistic QCD factorization framework....
We study the possibilities of obtaining information on the non-perturbative part of the evolution of transverse momentum distributions from the back-to-back limit of energy-energy correlators.
The analysis is performed through a global fit to all available experimental data from $e^+e^-$ collisions, for which the highest order result ever achieved in perturbation theory can be used as input.
I will discuss the case of inelastic production in ultraperipheral collisions, namely photon-initiated production where one of the interacting ions emits a photon incoherently, leading to ion dissociation. I will present comparisons to data and discuss the background contribution to light-by-light scattering.
A key focus of the physics program at the LHC is the study of head-on proton-proton collisions. However, an important class of physics can be studied for cases where the protons narrowly miss one another and remain intact. In such cases, the electromagnetic fields surrounding the protons can interact producing high-energy photon-photon collisions. Alternatively, interactions mediated by the...
The impact of the crab cavity on the space and time structure of luminosity will be presented. For a given set of collider operational parameters the single bunch crossing luminosity and the vertex space-time distributions are computed, based on the ILUMI4d algorithm.
We study the energy dependence of the cross-section for exclusive photoproduction of vector mesons J/ψ and Υ, using a solution to the next-to-leading order (NLO) Balitsky-Fadin-Kuraev-Lipatov (BFKL) equation. Our goal is to use BFKL evolution as a benchmark to provide evidence for the presence of non-linear QCD dynamics and signs for the onset of gluon saturation at highest center of mass...
