37 citations · 72 across the 15 of their papers we have counts for
17 papers
Exclusive photoproduction of a di-meson pair with large invariant mass
Saad Nabeebaccus, David Perez, Lech Szymanowski +1
The exclusive photoproduction of a pair of light mesons is studied within the framework of collinear factorisation. The amplitude factorises into a process-dependent perturbatively…
Hard exclusive photoproduction of photon-meson pairs: pseudoscalar channels , and
Nikola Crnković, Goran Duplančić, Saad Nabeebaccus +4
We investigate the hard exclusive photoproduction of photon-meson pairs at leading-twist and leading-order in perturbative QCD, and focus on pseudoscalar mesons $\text{M} \in \{π^\…
Exclusive photoproduction of a pair in the saturation framework
Michael Fucilla, Saad Nabeebaccus, Lech Szymanowski +2
We consider the exclusive photoproduction of a pair with large invariant mass, as a promising channel to study the effects of gluon saturation. It has recently been demonst…
Exclusive photoproduction of a di-meson pair with large invariant mass
Saad Nabeebaccus, David Perez, Lech Szymanowski +1
We consider the exclusive photoproduction of a di-meson pair with large invariant mass, , in the framework of collinear factorisation. The mesons consider…
Accessing Generalized Parton Distributions through exclusive processes
Goran Duplančić, Saad Nabeebaccus, Kornelija Passek-K. +3
We review our results on a new class of exclusive processes, as a probe of both chiral-even and chiral-odd quark GPDs. We consider the exclusive photoproduction of a phot…
Complete 1-loop study of exclusive and photoproduction with full GPD evolution
Chris Flett, Jean-Philippe Lansberg, Saad Nabeebaccus +3
We discuss the exclusive photoproduction of a heavy vector quarkonium, namely and at 1-loop in . In collinear factorisation (CF), the amplitude for such a process is…
Breakdown of collinear factorisation in the photoproduction of a pair with large invariant mass
Saad Nabeebaccus, Jakob Schoenleber, Lech Szymanowski +1
We identify a exclusive process, where collinear factorisation is broken, namely the exclusive photoproduction of a pair with large invariant mass. This occur…
Evidence of collinear factorization breaking due to collinear-to-soft Glauber exchanges for a exclusive process at leading twist
Saad Nabeebaccus, Jakob Schoenleber, Lech Szymanowski +1
We exhibit an exclusive process, namely the photoproduction of a pair with large invariant mass, which violates collinear factorization. We explicitly demonstrate that thi…
Exclusive vector-quarkonium photoproduction at NLO in alpha_s in collinear factorisation with evolution of the generalised parton distributions and high-energy resummation
C. A. Flett, J. P. Lansberg, S. Nabeebaccus +3
We perform the first complete one-loop study of exclusive photoproduction of vector quarkonia off protons in Collinear Factorisation (CF) including the scale evolution of the Gener…
Exclusive photoproduction of a photon-meson pair: A new class of observables to probe GPDs
Goran Duplančić, Saad Nabeebaccus, Kornelija Passek-K. +4
We discuss the exclusive photoproduction of a photon-meson pair with large as a channel to probe generalised parton distributions (GPDs). Like other exclusive p…
Breakdown of collinear factorization in the exclusive photoproduction of a pair with large invariant mass
Saad Nabeebaccus, Jakob Schoenleber, Lech Szymanowski +1
We study the exclusive photoproduction of a pair with large invariant mass , which is sensitive to the exchange of either two quarks or two gluons in the $…
Probing chiral-even and chiral-odd leading twist quark generalised parton distributions through the exclusive photoproduction of a pair
Goran Duplančić, Saad Nabeebaccus, Kornelija Passek-Kumerički +3
We extend our studies of a new class of exclusive processes using the collinear factorisation framework by considering the exclusive photoproduction of a pair, in…
Accessing GPDs through the exclusive photoproduction of a photon-meson pair with a large invariant mass
Goran Duplančić, Saad Nabeebaccus, Kornelija Passek-Kumerički +3
We study the exclusive photoproduction of a photon-meson pair with a large invariant mass, working in the QCD factorisation framework. Explicitly, we consider a -meson or a cha…
Accessing chiral-even quark generalised parton distributions in the exclusive photoproduction of a pair with large invariant mass in both fixed-target and collider experiments
Goran Duplančić, Saad Nabeebaccus, Kornelija Passek-Kumerički +3
We compute the exclusive photoproduction of a pair using the collinear factorisation framework, in the kinematic regime where the pair has a large invariant mass. This e…
Accessing GPDs through the exclusive photoproduction of a -meson pair
Goran Duplančić, Saad Nabeebaccus, Kornelija Passek-Kumerički +3
We consider the exclusive photo-production of a photon-meson pair with a large invariant mass, working in the QCD factorisation framework. Explicitly, we consider a -meson or a…
Resolving Charged Hadrons in QED -- Gauge Invariant Interpolating Operators
Saad Nabeebaccus, Roman Zwicky
Standard interpolating operators for charged mesons, e.g. for , are not gauge invariant in QED and therefore problematic for perturbative methods. We…
QED in LFU ratios: Theory versus Experiment, a Monte Carlo Study
Gino Isidori, Davide Lancerini, Saad Nabeebaccus +1
Using analytic results obtained in a meson effective theory, that includes all infrared sensitive logs, we build a dedicated Monte Carlo framework to describe QED corrections in $\…