Searching for the signal of dark matter and photon associated production at the LHC beyond leading order

2012/10/31 by Fa Peng Huang, Chong Sheng Li, Jian Wang +1
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #hep-ex #hep-ph

paper · pdf · doi:10.1103/physrevd.87.094018

published as Phys. Rev. D 87, 094018 (2013) · 19 pages, 18 figures, 2 tables, version published in Phys.Rev.D

openalex publication_date 2013/05/17 · arxiv created 2013/05/20 · arxiv updated 2013/05/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We study the signal of dark matter and photon associated production induced by the vector and axial-vector operators at the LHC, including the QCD next-to-leading order (NLO) effects. We find that the QCD NLO corrections reduce the dependence of the total cross sections on the factorization and renormalization scales, and the K factors increase with the increasing of the dark matter mass, which can be as large as about 1.3 for both the vector and axial-vector operators. Using our QCD NLO results, we improve the constraints on the new physics scale from the results of the recent CMS experiment. Moreover, we show the Monte Carlo simulation results for detecting the \ensuremathγ+\mathrmE\ensuremath\llap\not _T signal at the QCD NLO level, and present the integrated luminosity needed for a 5\ensuremathσ discovery at the 14 TeV LHC. If the signal is not observed, the lower limit on the new physics scale can be set.

Citations

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• Two cutoff phase space slicing method
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• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Sky Maps, Systematic Errors, and Basic Results
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