Precision study of production including parton shower effects at CERN Large Hadron Collider Supported in part by the National Natural Science Foundation of China (11775211 and 11535002), the Applied Basic Research Programs of Yunnan Provincial Science and Technology Department (2016FB008) and the CAS Center for Excellence in Particle Physics (CCEPP)

Huan-Yu Bi ( State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China; Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China) ; Ren-You Zhang ( State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China; Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China) ; Wen-Gan Ma ( State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China; Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China) ; Yi Jiang ( State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China; Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China) ; Xiao-Zhou Li ( State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China; Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China) ; et al. - Show all 6 authors

The precision study of production with subsequent and decays at the Large Hadron Collider (LHC) aids in the investigation of Higgs gauge couplings and the search for new physics beyond the standard model. In this study, we calculate the shower-matched next-to-leading order QCD and electroweak (EW) corrections from the annihilation and photon-induced channels to the production at the LHC. We deal with the subsequent decays of Higgs and bosons by adopting the MADSPIN method. Both the integrated cross section and some kinematic distributions of , H, and their decay products are provided. We find that the QCD correction significantly enhances the leading-order differential cross section, while the EW correction from the annihilation channel obviously suppresses it, especially in the high energy phase-space region, due to the Sudakov effect. The - and -induced relative corrections are positive and insensitive to the transverse momenta of , H, and their decay products. These photon-induced corrections compensate the negative -initiated EW correction, and become the dominant EW contribution as the increment of the colliding energy. The parton shower (PS) effects on kinematic distributions are not negligible. The relative PS correction to the b-jet transverse momentum distribution can exceed 100% in the high region. Moreover, we investigate the scale and PDF uncertainties, and find that the theoretical error of the -corrected integrated cross section mainly originates from the renormalization scale dependence of the QCD correction.

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      "full_name": "Zhang, Ren-You"
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      "full_name": "Ma, Wen-Gan"
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      "full_name": "Jiang, Yi"
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      "full_name": "Li, Xiao-Zhou"
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      "full_name": "Duan, Peng-Fei"
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      "title": "Precision study of \n\t\t\t\t\t production including parton shower effects at CERN Large Hadron Collider Supported in part by the National Natural Science Foundation of China (11775211 and 11535002), the Applied Basic Research Programs of Yunnan Provincial Science and Technology Department (2016FB008) and the CAS Center for Excellence in Particle Physics (CCEPP)"
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      "value": "The precision study of \n\t\t\t\t\t production with subsequent \n\t\t\t\t\t and \n\t\t\t\t\t decays at the Large Hadron Collider (LHC) aids in the investigation of Higgs gauge couplings and the search for new physics beyond the standard model. In this study, we calculate the shower-matched next-to-leading order QCD and electroweak (EW) corrections from the \n\t\t\t\t\t annihilation and photon-induced channels to the \n\t\t\t\t\t production at the \n\t\t\t\t\t LHC. We deal with the subsequent decays of Higgs and \n\t\t\t\t\t bosons by adopting the MADSPIN method. Both the integrated cross section and some kinematic distributions of \n\t\t\t\t\t, H, and their decay products are provided. We find that the QCD correction significantly enhances the leading-order differential cross section, while the EW correction from the \n\t\t\t\t\t annihilation channel obviously suppresses it, especially in the high energy phase-space region, due to the Sudakov effect. The \n\t\t\t\t\t- and \n\t\t\t\t\t-induced relative corrections are positive and insensitive to the transverse momenta of \n\t\t\t\t\t, H, and their decay products. These photon-induced corrections compensate the negative \n\t\t\t\t\t-initiated EW correction, and become the dominant EW contribution as the increment of the \n\t\t\t\t\t colliding energy. The parton shower (PS) effects on kinematic distributions are not negligible. The relative PS correction to the b-jet transverse momentum distribution can exceed 100% in the high \n\t\t\t\t\t region. Moreover, we investigate the scale and PDF uncertainties, and find that the theoretical error of the \n\t\t\t\t\t-corrected integrated cross section mainly originates from the renormalization scale dependence of the QCD correction.\n\t\t\t\t"
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Published on:
01 December 2019
Publisher:
Institute of Physics Publishing/Chinese Academy of Sciences
Published in:
Chinese Physics C , Volume 43 (2019)
Issue 12
Article ID: 123103
DOI:
https://doi.org/10.1088/1674-1137/43/12/123103
arXiv:
1811.01499
Copyrights:
© 2019 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd
Licence:
cc-by

Fulltext files: