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Measurements of differential and double-differential Drell-Yan cross sections in proton-proton collisions at root s=8 TeV
CMS Collaboration
2015
发表期刊EUROPEAN PHYSICAL JOURNAL C
卷号75期号:4页码:147
文章类型Article
摘要Measurements of the differential and double-differential Drell-Yan cross sections in the dielectron and dimuon channels are presented. They are based on proton-proton collision data at root s = 8 TeV recorded with the CMS detector at the LHC and corresponding to an integrated luminosity of 19.7 fb(-1). The measured inclusive cross section in the Z peak region (60-120 GeV), obtained from the combination of the dielectron and dimuon channels, is 1138 +/- 8 (exp) +/- 25 (theo) +/- 30 (lumi) pb, where the statistical uncertainty is negligible. The differential cross section d sigma/dm in the dilepton mass range 15-2000 GeV is measured and corrected to the full phase space. The double-differential cross section d(2)sigma/dm d vertical bar y vertical bar is also measured over the mass range 20 to 1500 GeV and absolute dilepton rapidity from 0 to 2.4. In addition, the ratios of the normalized differential cross sections measured at root s = 7 and 8 TeV are presented. These measurements are compared to the predictions of perturbative QCD at next-to-leading and next-to-next-to-leading (NNLO) orders using various sets of parton distribution functions (PDFs). The results agree with the NNLO theoretical predictions computed with FEWZ 3.1 using the CT10 NNLO and NNPDF2.1 NNLO PDFs. The measured double-differential cross section and ratio of normalized differential cross sections are sufficiently precise to constrain the proton PDFs.
学科领域Physics
DOI10.1140/epjc/s10052-015-3364-2
收录类别SCI
WOS类目Physics, Particles & Fields
WOS记录号WOS:000355669300006
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被引频次:24[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228449
专题粒子天体物理中心
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CMS Collaboration. Measurements of differential and double-differential Drell-Yan cross sections in proton-proton collisions at root s=8 TeV[J]. EUROPEAN PHYSICAL JOURNAL C,2015,75(4):147.
APA CMS Collaboration.(2015).Measurements of differential and double-differential Drell-Yan cross sections in proton-proton collisions at root s=8 TeV.EUROPEAN PHYSICAL JOURNAL C,75(4),147.
MLA CMS Collaboration."Measurements of differential and double-differential Drell-Yan cross sections in proton-proton collisions at root s=8 TeV".EUROPEAN PHYSICAL JOURNAL C 75.4(2015):147.
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