Pair production of heavy quarkonium and B{sub c}{sup (*)} mesons at hadron colliders

doi:https://doi.org/10.1103/PHYSREVD.80.014020

Title: Pair production of heavy quarkonium and B{sub c}{sup (*)} mesons at hadron colliders

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Abstract

We investigate the pair production of S-wave heavy quarkonium at the LHC in the color-singlet mechanism (CSM) and estimate the contribution from the gluon fragmentation process in the color-octet mechanism (COM) for comparison. With the matrix elements extracted previously in the leading-order calculations, the numerical results show that the production rates are quite large for the pair production processes at the LHC. The p{sub t} distribution of double J/{psi} production in the CSM is dominant over that in the COM when p{sub t} is smaller than about 10 GeV. For the production of double {upsilon}, the contribution of the COM is always larger than that in the CSM. The large differences in the theoretical predictions between the CSM and COM for the p{sub t} distributions in the large p{sub t} region are useful in clarifying the effects of COM on the quarkonium production. We also investigate the pair production of S-wave B{sub c} and B{sub c}* mesons, and the measurement of these processes is useful to test the CSM and extract the long-distance matrix elements for the B{sub c} and B{sub c}* mesons. Aside from numerical calculations, analytical expressions for the production differential cross sections of all these processes aremore » also given.« less

Authors:

Rong, Li; Yujie, Zhang ^[1]; Kuangta, Chao ^[1]

Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871 (China)

Publication Date:: 2009-07-01

OSTI Identifier:: 21308526

Resource Type:: Journal Article

Journal Name:: Physical Review. D, Particles Fields

Additional Journal Information:: Journal Volume: 80; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevD.80.014020; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2821

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CERN LHC; COLOR MODEL; COMPARATIVE EVALUATIONS; DIFFERENTIAL CROSS SECTIONS; DISTRIBUTION; FORECASTING; FRAGMENTATION; GEV RANGE 01-10; GLUONS; J PSI-3097 MESONS; MATRIX ELEMENTS; PAIR PRODUCTION; S WAVES

Citation Formats


                    Rong, Li, Yujie, Zhang, Kuangta, Chao, and Center for High Energy Physics, Peking University, Beijing 100871. Pair production of heavy quarkonium and B{sub c}{sup (*)} mesons at hadron colliders.  United States: N. p., 2009. 
        Web.  doi:10.1103/PHYSREVD.80.014020.

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                    Rong, Li, Yujie, Zhang, Kuangta, Chao, & Center for High Energy Physics, Peking University, Beijing 100871. Pair production of heavy quarkonium and B{sub c}{sup (*)} mesons at hadron colliders.  United States.  https://doi.org/10.1103/PHYSREVD.80.014020

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                    Rong, Li, Yujie, Zhang, Kuangta, Chao, and Center for High Energy Physics, Peking University, Beijing 100871. Wed .  
        "Pair production of heavy quarkonium and B{sub c}{sup (*)} mesons at hadron colliders".  United States.  https://doi.org/10.1103/PHYSREVD.80.014020.

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@article{osti_21308526,

  title        = {Pair production of heavy quarkonium and B{sub c}{sup (*)} mesons at hadron colliders},

  author       = {Rong, Li and Yujie, Zhang and Kuangta, Chao and Center for High Energy Physics, Peking University, Beijing 100871},

  abstractNote = {We investigate the pair production of S-wave heavy quarkonium at the LHC in the color-singlet mechanism (CSM) and estimate the contribution from the gluon fragmentation process in the color-octet mechanism (COM) for comparison. With the matrix elements extracted previously in the leading-order calculations, the numerical results show that the production rates are quite large for the pair production processes at the LHC. The p{sub t} distribution of double J/{psi} production in the CSM is dominant over that in the COM when p{sub t} is smaller than about 10 GeV. For the production of double {upsilon}, the contribution of the COM is always larger than that in the CSM. The large differences in the theoretical predictions between the CSM and COM for the p{sub t} distributions in the large p{sub t} region are useful in clarifying the effects of COM on the quarkonium production. We also investigate the pair production of S-wave B{sub c} and B{sub c}* mesons, and the measurement of these processes is useful to test the CSM and extract the long-distance matrix elements for the B{sub c} and B{sub c}* mesons. Aside from numerical calculations, analytical expressions for the production differential cross sections of all these processes are also given.},

  doi          = {10.1103/PHYSREVD.80.014020},

  url          = {https://www.osti.gov/biblio/21308526},
  journal      = {Physical Review. D, Particles Fields},

  issn         = {0556-2821},

  number       = 1,

  volume       = 80,

  place        = {United States},

  year         = {2009},

  month        = {7}

}

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