Inclusive deep inelastic scattering at high Q2 with longitudinally polarised lepton beams at HERA
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- 作者：H1 Collaboration
F. D. Aaron (545)
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A. Baghdasaryan (38)
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E. Barrelet (29)
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K. Begzsuren (35)
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G. Brandt (11)
M. Brinkmann (11)
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A. J. Campbell (11)
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V. Chekelian (26)
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J. A. Coughlan (6)
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J. B. Dainton (18)
K. Daum (3742) daum@mail.desy.de
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M. Dobre (1247)
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A. Dossanov (1226)
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T. Greenshaw (18)
G. Grindhammer (26)
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R. C. W. Henderson (17)
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F. Huber (14)
M. Jacquet (27)
X. Janssen (4)
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H. Jung (114)
M. Kapichine (9)
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M. Klein (18)
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M. Kr盲mer (11)
J. Kretzschmar (18)
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M. P. J. Landon (19)
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H. Meyer (37)
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F. Zomer (27) - 关键词：KEYWORDS Lepton ; Nucleon Scattering
- 刊名：Journal of High Energy Physics
- 出版年：2012
- 出版时间：September 2012
- 年：2012
- 卷：2012
- 期：9
- 全文大小：2.7 MB
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- ISSN：1029-8479
文摘
Inclusive e 卤 p single and double differential cross sections for neutral and charged current deep inelastic scattering processes are measured with the H1 detector at HERA. The data were taken at a centre-of-mass energy of 脰s = 319 \sqrt {s} = {319} GeV with a total integrated luminosity of 333.7 pb−1 shared between two lepton beam charges and two longitudinal lepton polarisation modes. The differential cross sections are measured in the range of negative four-momentum transfer squared, Q 2, between 60 and 50 000 GeV2, and Bjorken x between 0.0008 and 0.65. The measurements are combined with earlier published unpolarised H1 data to improve statistical precision and used to determine the structure function xF3gZ xF_{3}^{{\gamma Z}} . Ameasurementoftheneutralcurrentparityviolating structure function F2gZ F_{2}^{{\gamma Z}} is presented for the first time. The polarisation dependence of the charged current total cross section is also measured. The new measurements are well described by a next-to-leading order QCD fit based on all published H1 inclusive cross section data which are used to extract the parton distribution functions of the proton.