000 02784nlm1a2200433 4500
001 666214
005 20231030042029.0
035 _a(RuTPU)RU\TPU\network\37418
035 _aRU\TPU\network\37414
090 _a666214
100 _a20211210a2020 k y0engy50 ba
101 0 _aeng
135 _aarcn ---uucaa
181 0 _ai
182 0 _ab
200 1 _aObservation of nuclear modifications in W± boson production in pPb collisions at √s NN=8.16TeV
_fА. М. Sirunyan, A. R. Tumasyan, W. Adam [et al.]
203 _aText
_celectronic
300 _aTitle screen
320 _a[References.: 56 tit.]
330 _aThe production of W± bosons is studied in proton-lead (pPb) collisions at a nucleon-nucleon centre-of-mass energy of √s NN=8.16TeV. Measurements are performed in the W±→μ±νμ channel using a data sample corresponding to an integrated luminosity of 173.4±6.1nb−1, collected by the CMS Collaboration at the LHC. The number of positively and negatively charged W bosons is determined separately in the muon pseudorapidity region in the laboratory frame |ηlabμ|<2.4 and transverse momentum pTμ>25GeV/c. The W± boson differential cross sections, muon charge asymmetry, and the ratios of W± boson yields for the proton-going over the Pb-going beam directions are reported as a function of the muon pseudorapidity in the nucleon-nucleon centre-of-mass frame. The measurements are compared to the predictions from theoretical calculations based on parton distribution functions (PDFs) at next-to-leading-order. The results favour PDF calculations that include nuclear modifications and provide constraints on the nuclear PDF global fits.
461 _tPhysics Letters B
463 _tVol. 800
_v[135048, 24 p.]
_d2020
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _aCMS
610 1 _aheavy ions
610 1 _aelectroweak
610 1 _aW boson
610 1 _apPb
701 1 _aSirunyan
_bА. М.
701 1 _aTumasyan
_bA. R.
701 1 _aAdam
_bW.
_gWolfgang
701 1 _aAmbrogi
_bF.
_gFederico
701 1 _aTyurin
_bN. E.
_gNikolay Evgenjevich
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
712 0 2 _aНациональный исследовательский Томский политехнический университет
_bИсследовательская школа физики высокоэнергетических процессов
_c(2017- )
_h8118
_2stltpush
_3(RuTPU)RU\TPU\col\23551
801 2 _aRU
_b63413507
_c20211210
_gRCR
856 4 _uhttps://doi.org/10.1016/j.physletb.2019.135048
942 _cCF