{
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  "authors": [
    {
      "raw_name": "Yifan Yang", 
      "affiliations": [
        {
          "country": "China", 
          "value": "Department of Physics and Jiangsu Key Laboratory for Numerical Simulation of Large Scale Complex Systems, Nanjing Normal University, Nanjing 210023, People\u2019s Republic of China"
        }
      ], 
      "surname": "Yang", 
      "given_names": "Yifan", 
      "full_name": "Yang, Yifan"
    }, 
    {
      "raw_name": "Jialun Ping", 
      "affiliations": [
        {
          "country": "China", 
          "value": "Department of Physics and Jiangsu Key Laboratory for Numerical Simulation of Large Scale Complex Systems, Nanjing Normal University, Nanjing 210023, People\u2019s Republic of China"
        }
      ], 
      "surname": "Ping", 
      "given_names": "Jialun", 
      "full_name": "Ping, Jialun"
    }
  ], 
  "titles": [
    {
      "source": "APS", 
      "title": "Investigation of <math><mi>c</mi><mi>s</mi><mover><mi>c</mi><mo>\u00af</mo></mover><mover><mi>s</mi><mo>\u00af</mo></mover></math> tetraquark in the chiral quark model"
    }
  ], 
  "dois": [
    {
      "value": "10.1103/PhysRevD.99.094032"
    }
  ], 
  "publication_info": [
    {
      "journal_volume": "99", 
      "journal_title": "Physical Review D", 
      "material": "article", 
      "journal_issue": "9", 
      "year": 2019
    }
  ], 
  "$schema": "http://repo.scoap3.org/schemas/hep.json", 
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    "source": "APS", 
    "method": "APS", 
    "submission_number": "810b323c058f11ecb53772fd3742099d"
  }, 
  "page_nr": [
    7
  ], 
  "license": [
    {
      "url": "https://creativecommons.org/licenses/by/4.0/", 
      "license": "CC-BY-4.0"
    }
  ], 
  "copyright": [
    {
      "statement": "Published by the American Physical Society", 
      "year": "2019"
    }
  ], 
  "control_number": "47467", 
  "record_creation_date": "2019-05-23T16:30:03.109557", 
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  "collections": [
    {
      "primary": "HEP"
    }, 
    {
      "primary": "Citeable"
    }, 
    {
      "primary": "Published"
    }
  ], 
  "arxiv_eprints": [
    {
      "categories": [
        "hep-ph"
      ], 
      "value": "1903.08505"
    }
  ], 
  "abstracts": [
    {
      "source": "APS", 
      "value": "Inspired by the recent observation of exotic resonances <math><mi>X</mi><mo>(</mo><mn>4140</mn><mo>)</mo></math>, <math><mi>X</mi><mo>(</mo><mn>4274</mn><mo>)</mo></math>, <math><mi>X</mi><mo>(</mo><mn>4350</mn><mo>)</mo></math>, <math><mi>X</mi><mo>(</mo><mn>4500</mn><mo>)</mo></math>, and <math><mi>X</mi><mo>(</mo><mn>4700</mn><mo>)</mo></math> reported by several experiment collaborations, we investigated the four-quark system <math><mi>c</mi><mi>s</mi><mover><mi>c</mi><mo>\u00af</mo></mover><mover><mi>s</mi><mo>\u00af</mo></mover></math> with quantum numbers <math><msup><mi>J</mi><mrow><mi>P</mi><mi>C</mi></mrow></msup><mo>=</mo><msup><mn>1</mn><mrow><mo>+</mo><mo>+</mo></mrow></msup></math> and <math><msup><mn>0</mn><mrow><mo>+</mo><mo>+</mo></mrow></msup></math> in the framework of the chiral quark model. Two configurations, diquark-antidiquark and meson-meson, with all possible color structures are considered. The results show that no molecular state can be formed, but the resonance may exist if the color structure of the meson-meson configuration is <math><mn>8</mn><mo>\u2297</mo><mn>8</mn></math>. In the present calculation, the <math><mi>X</mi><mo>(</mo><mn>4274</mn><mo>)</mo></math> can be assigned as the <math><mi>c</mi><mi>s</mi><mover><mi>c</mi><mo>\u00af</mo></mover><mover><mi>s</mi><mo>\u00af</mo></mover></math> tetraquark states with <math><msup><mi>J</mi><mrow><mi>P</mi><mi>C</mi></mrow></msup><mo>=</mo><msup><mn>1</mn><mrow><mo>+</mo><mo>+</mo></mrow></msup></math>, but the energy of <math><mi>X</mi><mo>(</mo><mn>4140</mn><mo>)</mo></math> is too low to be regarded as the tetraquark state. <math><mi>X</mi><mo>(</mo><mn>4350</mn><mo>)</mo></math> can be a good candidate of the compact tetraquark state with <math><msup><mi>J</mi><mrow><mi>P</mi><mi>C</mi></mrow></msup><mo>=</mo><msup><mn>0</mn><mrow><mo>+</mo><mo>+</mo></mrow></msup></math>. When the radial excitation is taken into account, the <math><mi>X</mi><mo>(</mo><mn>4700</mn><mo>)</mo></math> can be explained as the <math><mn>2</mn><mi>S</mi></math> radial excited tetraquark state with <math><msup><mi>J</mi><mrow><mi>P</mi><mi>C</mi></mrow></msup><mo>=</mo><msup><mn>0</mn><mrow><mo>+</mo><mo>+</mo></mrow></msup></math>. As for <math><mi>X</mi><mo>(</mo><mn>4500</mn><mo>)</mo></math>, there is no matching state in our calculation."
    }
  ], 
  "imprints": [
    {
      "date": "2019-05-23", 
      "publisher": "APS"
    }
  ]
}