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Registration Number

0215U006015, 0111U009552 , R & D reports

Title

Research of radiation processes in crystalline targets, study of properties of coherent bremsstrahlung beams and research of processes of collision of protons and heavy ions in the field of ultra relativistic energies

Head

Maslov Mykola Ivanovich, Кандидат фізико-математичних наук

Registration Date

22-01-2015

Organization

National Science Center "Kharkiv Institute of Physics and Technology

Description

Correlations in production of prompt charmonia J/psi, chi_0с, psi(3770) and photons in collisions of protons and lead nuclei have been investigated under conditions of the experiments at the LHC at CERN. Correlation observables in space of transverse momenta, rapidities, and azimuthal angles in joint production of charmonia and photons, charmonia and jets have been calculated with the help of simulation of c- anti-c quark production in singlet and octet color states that evolve into J/psi, chi_0с and psi(3770) mesons. Simulation of the reactions has been carried out with event generator Pythia 8 and tunes that takes into account results of the experiments at the LHC. Influence of multipartonic interactions in the initial state, space- and time-like showers on results of the calculations is shown to be essential. Role of photon emission by quarks in initial and final states is studied. Intervals of the Bjorken variable x, in which the observables are sensitive at parton distribution functions, are determined using dynamic simulation. It is demonstrated that investigations of the correlations are useful to test models in gluon dynamics. The observables are analyzed under the kinematic conditions that are studied in experiments at the LHC. Measurements of the angular correlations in production of charmonia and photons are shown to be feasible with the ALICE detector. Results of calculations of the correlation observables are of interest for preparation of new ALICE, ATLAS, CMS и LHCb measurements at the LHC and of the program of researches at Muon Forward Tracker in ALICE experiment.

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Бочек Георгій Леонідович
Бурдейний Дмитро Дмитрович
Васильєв Геннадій Петрович
Ганенко Володимир Борисович
Деєв Олексій Степанович
Кіпріч Сергій Костянтинович
Каплій Олександр Андрійович
Котляр Володимир Выкторович
Мазілов Олексій Олександрович
Маслов Микола Іванович
Муравська Світлана Володимирівна
Наумов Сергій Вікторович
Овчинник Володимир Дмитрович
Потін Сергій Михайлович
Шуліка Максим Юрійович
Яловенко Володимир Іванович