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2015•arXiv (Cornell University)Open access

HERA Inclusive Neutral and Charged Current Cross Sections and a New PDF\n Fit, HERAPDF 2.0

Z. Zhang

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Abstract

In this talk, I present the brand new results from the H1 and ZEUS\nCollaborations on the combination of all previously published inclusive deep\ninelastic cross sections at HERA for neutral and charged current $e^\\pm p$\nscattering for zero beam polarisation and the corresponding parton\ndistributions functions, HERAPDF 2.0, at up to next-to-next-to-leading order\n(NNLO). The results also include a new precise determination at next-to-leading\norder (NLO) of the strong coupling constant $\\alpha_s(M^2_Z)=0.1184\\pm 0.0016$\n(excluding scale uncertainties) based on a simultaneous fit to the combined\ninclusive cross section data and jet production data.\n

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In this talk, I present the brand new results from the H1 and ZEUS\nCollaborations on the combination of all previously published inclusive deep\ninelastic cross sections at HERA for neutral and charged current $e^\\pm p$\nscattering for zero beam polarisation and the corresponding parton\ndistributions functions, HERAPDF 2.0, at up to next-to-next-to-leading order\n(NNLO). The results also include a new precise determination at next-to-leading\norder (NLO) of the strong coupling constant $\\alpha_s(M^2_Z)=0.1184\\pm 0.0016$\n(excluding scale uncertainties) based on a simultaneous fit to the combined\ninclusive cross section data and jet production data.\n

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Available abstract

In this talk, I present the brand new results from the H1 and ZEUS\nCollaborations on the combination of all previously published inclusive deep\ninelastic cross sections at HERA for neutral and charged current $e^\\pm p$\nscattering for zero beam polarisation and the corresponding parton\ndistributions functions, HERAPDF 2.0, at up to next-to-next-to-leading order\n(NNLO). The results also include a new precise determination at next-to-leading\norder (NLO) of the strong coupling constant $\\alpha_s(M^2_Z)=0.1184\\pm 0.0016$\n(excluding scale uncertainties) based on a simultaneous fit to the combined\ninclusive cross section data and jet production data.\n

Key concepts: HERA, ZEUS (particle detector), Neutral current, Physics, Charged current, Deep inelastic scattering, Parton, Particle physics

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