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Особенности рождения пар Ð°Ð´Ñ€Ð¾Ð½Ð½Ñ‹Ñ ÑÑ‚Ñ€ÑƒÐ¹ с большим разделением по быстроте в протон-Ð¿Ñ€Ð¾Ñ‚Ð¾Ð½Ð½Ñ‹Ñ Ð²Ð·Ð°Ð¸Ð¼Ð¾Ð´ÐµÐ¹ÑÑ‚Ð²Ð¸ÑÑ Ð¿Ñ€Ð¸ ÑÐ½ÐµÑ€Ð³Ð¸ÑÑ LHC

научный доклад

Особенности рождения пар Ð°Ð´Ñ€Ð¾Ð½Ð½Ñ‹Ñ ÑÑ‚Ñ€ÑƒÐ¹ с большим разделением по быстроте в протон-Ð¿Ñ€Ð¾Ñ‚Ð¾Ð½Ð½Ñ‹Ñ Ð²Ð·Ð°Ð¸Ð¼Ð¾Ð´ÐµÐ¹ÑÑ‚Ð²Ð¸ÑÑ Ð¿Ñ€Ð¸ ÑÐ½ÐµÑ€Ð³Ð¸ÑÑ LHC

Abstract

В работе представлены результаты Монте-Карло расчетов отношений сечений рождения пар адронных струй, как функций разделения по быстроте между струями в паре в протон-протонных столкновениях при энергиях системы центра масс 2.76, 8, 13, 14, 27 и 100 ТэВ, которые доступны на Больном адронном коллайдре (БАК) и планируются на будущих протон-протонных коллайдерах. Выполнено моделирование протон-протонных столкновений в программных пакетах Монте-Карло, основанных на эволюции Грибова – Липатова – Альтарелли – Паризи – Докшицера PYTHIA8 и HERWIG++, а также в программном пакете HEJ+ARIADNE, основанном на эволюции Балицкого-Фадина-Кураева-Липатова (БФКЛ), что позволяет сделать выводы о чувствительности выбранного набора физических наблюдаемых к эффектам БФКЛ и возможности их обнаружения при условиях, созданных на БАК и будущих протон-протонных коллайдерах. Также обсуждаются методы коррекции детекторных искажений при измерении сечений рождения пар адронных струй в протон-протонных столкновениях при энергии системы центра масс протонов 2,76 ТэВ на детекторе CMS (Compact Muon Solenoid) на БАК. Рассмотрены следующие методы: поправочных коэффициентов, обращения матрицы миграции, максимизации функции правдоподобия с регуляризацией Тихонова (ТUnfold), сингулярного разложения матрицы миграции (SVD), итераций Д’Агостини. Построена оптимальная схема коррекции детекторных искажений.

The results of Monte Carlo calculation of cross section ratios of hadron dijet production, as functions of rapidity separation between jets in the dijet, in proton-proton collisions at center of mass energy 2.76, 8, 13, 14, 27 and 100 TeV, which are available at the Large Hadron Collider (LHC) and future proton-proton colliders. The Monte Carlo simulation is performed with packages based on evolution equations of Dokshitzer–Gribov–Lipatov– Altarelli–Parisi such as PYTHIA8 and HERWIG++, as well as with package HEJ+ARIADNE which is based on evolution equations of Balitsky–Fadin–Kuraev–Lipatov (BFKL). The results allow to draw conclusion about sensibility of the studied set of physical observables to BFKL evolution and possibility of its observation at the LHC and future proton-proton colliders. The methods of unfolding are discussed in application to measurement of ratios of dijet production cross sections in proton-proton collisions at center of mass energy 2.76 TeV at the CMS (Compact Muon Solenoid) detector at the LHC. The bin-by-bin, matrix inversion, TUnfold, SVD unfolding and D’Agositni unfolding are considered. The optimal scheme of correction for detector effects is built.

Keywords

большая быстрота, TUnfold, DGLAP, iterations D’Agostini, пары Ð°Ð´Ñ€Ð¾Ð½Ð½Ñ‹Ñ ÑÑ‚Ñ€ÑƒÐ¹, итерации Д'Агостини, QCD, КХД, обратная свертка, hadron dijet, ДГЛАП, БФКЛ, large rapidiy, SVD, unfolding, BFKL

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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