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  "authors": [
    {
      "affiliations": [
        {
          "country": "Germany", 
          "value": "Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, Hamburg, 22607, Germany", 
          "organization": "Deutsches Elektronen-Synchrotron DESY"
        }
      ], 
      "surname": "Kling", 
      "email": "felix.kling@desy.de", 
      "full_name": "Kling, Felix", 
      "given_names": "Felix"
    }, 
    {
      "affiliations": [
        {
          "country": "USA", 
          "value": "Department of Physics, University of Arizona, Tucson, AZ, 85721, USA", 
          "organization": "University of Arizona"
        }
      ], 
      "surname": "Li", 
      "email": "shuailongli@email.arizona.edu", 
      "full_name": "Li, Shuailong", 
      "given_names": "Shuailong"
    }, 
    {
      "affiliations": [
        {
          "country": "China", 
          "value": "CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100190, China", 
          "organization": "Chinese Academy of Sciences"
        }
      ], 
      "surname": "Song", 
      "email": "huayangs@itp.ac.cn", 
      "full_name": "Song, Huayang", 
      "given_names": "Huayang"
    }, 
    {
      "affiliations": [
        {
          "country": "USA", 
          "value": "Department of Physics, University of Arizona, Tucson, AZ, 85721, USA", 
          "organization": "University of Arizona"
        }
      ], 
      "surname": "Su", 
      "email": "shufang@email.arizona.edu", 
      "full_name": "Su, Shufang", 
      "given_names": "Shufang"
    }, 
    {
      "affiliations": [
        {
          "country": "China", 
          "value": "School of Science, Shenzhen Campus of Sun Yat-sen University, No. 66, Gongchang Road, Guangming District, Shenzhen, Guangdong, 518107, P.R. China", 
          "organization": "School of Science, Shenzhen Campus of Sun Yat-sen University"
        }
      ], 
      "surname": "Su", 
      "email": "suwei26@mail.sysu.edu.cn", 
      "full_name": "Su, Wei", 
      "given_names": "Wei"
    }
  ], 
  "titles": [
    {
      "source": "Springer", 
      "title": "Light Scalars at FASER"
    }
  ], 
  "dois": [
    {
      "value": "10.1007/JHEP08(2023)001"
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      "page_end": "40", 
      "journal_title": "Journal of High Energy Physics", 
      "material": "article", 
      "journal_volume": "2023", 
      "artid": "JHEP08(2023)001", 
      "year": 2023, 
      "page_start": "1", 
      "journal_issue": "8"
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    "source": "Springer", 
    "method": "Springer", 
    "submission_number": "4b4c5d8a75f211eea066664922b6a1d4"
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  "page_nr": [
    40
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  "license": [
    {
      "url": "https://creativecommons.org/licenses//by/4.0", 
      "license": "CC-BY-4.0"
    }
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  "copyright": [
    {
      "holder": "The Author(s)", 
      "year": "2023"
    }
  ], 
  "control_number": "79366", 
  "record_creation_date": "2023-08-02T12:30:18.533430", 
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  "arxiv_eprints": [
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      "value": "2212.06186"
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  ], 
  "abstracts": [
    {
      "source": "Springer", 
      "value": "FASER, the ForwArd Search ExpeRiment, is a currently operating experiment at the Large Hadron Collider (LHC) that can detect light long-lived particles produced in the forward region of the LHC interacting point. In this paper, we study the prospect of detecting light CP-even and CP-odd scalars at FASER and FASER 2. Considering a model-independent framework describing the most general interactions between a CP-even or CP-odd scalar and SM particles using the notation of coupling modifiers in the effective Lagrangian, we develop the general formalism for the scalar production and decay. We then analyze the FASER and FASER 2 reaches of light scalars in the large tan \u03b2 region of the Type-I two Higgs double model as a case study, in which light scalars with relatively long lifetime could be accommodated. In the two benchmark scenarios we considered, the light (pseudo)scalar decay length varies in (10\u22128, 105) meters. Both FASER and FASER 2 can probe a large part of the parameter space in the large tan \u03b2 region up to 107, extending beyond the constraints of the other existing experiments."
    }
  ], 
  "imprints": [
    {
      "date": "2023-08-01", 
      "publisher": "Springer"
    }
  ]
}