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035 _a(RuTPU)RU\TPU\network\27055
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100 _a20181210a2018 k y0engy50 ba
101 0 _aeng
135 _adrcn ---uucaa
181 0 _ai
182 0 _ab
200 1 _aMeasurement of the groomed jet mass in PbPb and pp collisions at √sNN=5.02 TeV
_fА. М. Sirunyan [et al.]
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: 57 tit.]
330 _aA measurement of the groomed jet mass in PbPb and pp collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV with the CMS detector at the LHC is presented. Jet grooming is a recursive procedure which sequentially removes soft constituents of a jet until a pair of hard subjets is found. The resulting groomed jets can be used to study modifications to the parton shower evolution in the presence of the hot and dense medium created in heavy ion collisions. Predictions of groomed jet properties from the pythia and herwig++ event generators agree with the measurements in pp collisions. When comparing the results from the most central PbPb collisions to pp data, a hint of an increase of jets with large jet mass is observed, which could originate from additional medium-induced radiation at a large angle from the jet axis. However, no modification of the groomed mass of the core of the jet is observed for all PbPb centrality classes. The PbPb results are also compared to predictions from the jewel and q-pythia event generators, which predict a large modification of the groomed mass not observed in the data.
333 _aРежим доступа: по договору с организацией-держателем ресурса
461 _tJournal of High Energy Physics
463 _t№ 10
_v[161, 35 p.]
_d2018
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _aструи
610 1 _aстолкновения
610 1 _aтвердые примеси
701 1 _aSirunyan
_bА. М.
701 1 _aTumasyan
_bA. R.
701 1 _aAdam
_bW.
_gWolfgang
701 1 _aAmbrogi
_bF.
_gFederico
701 1 _aBabaev
_bA. A.
_cphysicist
_cengineer-issledovatelskogo Polytechnic University, candidate of physical and mathematical Sciences
_f1981-
_gAnton Anatoljevich
_2stltpush
_3(RuTPU)RU\TPU\pers\35154
701 1 _aOkhotnikov
_bV. V.
_cphysicist
_cengineer of Tomsk Polytechnic University
_f1992-
_gVitaly Vladimirovich
_2stltpush
_3(RuTPU)RU\TPU\pers\36453
712 0 2 _aНациональный исследовательский Томский политехнический университет
_bИсследовательская школа физики высокоэнергетических процессов
_c(2017- )
_h8118
_2stltpush
_3(RuTPU)RU\TPU\col\23551
712 0 2 _aНациональный исследовательский Томский политехнический университет
_bИнженерная школа новых производственных технологий
_bНаучно-производственная лаборатория "Импульсно-пучковых, электроразрядных и плазменных технологий"
_h7882
_2stltpush
_3(RuTPU)RU\TPU\col\23502
801 2 _aRU
_b63413507
_c20181213
_gRCR
856 4 _uhttps://doi.org/10.1007/JHEP10(2018)161
942 _cCF