2016/06/30 by Marta Łuszczak, Antoni Szczurek, Luszczak, Marta +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.1606.09499
openalex publication_date 2016/06/30 · openalex created_date 2022/10/04 · openalex updated_date 2026/07/28
We discuss diffractive production of heavy mesons at the LHC. The\ndifferential cross sections for single- and central-diffractive mechanisms for\nc c pair production are calculated in the framework of the\nIngelman-Schlein model corrected for absorption effects. Here, leading-order\ngluon-gluon fusion and quark-antiquark anihilation partonic subprocesses are\ntaken into consideration. Both pomeron flux factors as well as parton\ndistributions in the pomeron are taken from the H1 Collaboration analysis of\ndiffractive structure function and diffractive dijets at HERA. The extra\ncorrections from subleading reggeon exchanges are also taken into\nconsideration. In addition to standard collinear approach, for the first time\nthe differential cross sections for the diffractive c c pair production\nare calculated in the framework of the kt-factorization approach, i.e.\neffectively including higher-order corrections. The unintegrated (transverse\nmomentum dependent) diffractive parton distributions in proton are calculated\nwith the help of the Kimber-Martin-Ryskin prescription where collinear\ndiffractive PDFs are used as input. Some correlation observables, like\nazimuthal angle correlation between c and c, and c c pair\ntransverse momentum were obtained for the first time. The hadronization of\ncharm quarks is taken into account by means of fragmentation function\ntechnique.\n