{
  "_oai": {
    "updated": "2019-07-31T10:37:02Z", 
    "id": "oai:repo.scoap3.org:47747", 
    "sets": [
      "PLB"
    ]
  }, 
  "authors": [
    {
      "affiliations": [
        {
          "country": "China", 
          "value": "Department of Applied Physics, Nanjing University of Science and Technology, Nanjing, China"
        }
      ], 
      "surname": "He", 
      "email": "minhephys@gmail.com", 
      "full_name": "He, Min", 
      "given_names": "Min"
    }, 
    {
      "affiliations": [
        {
          "country": "USA", 
          "value": "Cyclotron Institute and Department of Physics & Astronomy, Texas A&M University, College Station, USA"
        }
      ], 
      "surname": "Rapp", 
      "given_names": "Ralf", 
      "full_name": "Rapp, Ralf"
    }
  ], 
  "titles": [
    {
      "source": "Elsevier", 
      "title": "Charm-baryon production in proton-proton collisions"
    }
  ], 
  "dois": [
    {
      "value": "10.1016/j.physletb.2019.06.004"
    }
  ], 
  "publication_info": [
    {
      "page_end": "121", 
      "journal_title": "Physics Letters B", 
      "material": "article", 
      "journal_volume": "795 C", 
      "artid": "34678", 
      "year": 2019, 
      "page_start": "117"
    }
  ], 
  "$schema": "http://repo.scoap3.org/schemas/hep.json", 
  "acquisition_source": {
    "date": "2019-07-31T12:28:42.007804", 
    "source": "Elsevier", 
    "method": "Elsevier", 
    "submission_number": "0ca954cab37d11e9be7602163e01809a"
  }, 
  "page_nr": [
    5
  ], 
  "license": [
    {
      "url": "http://creativecommons.org/licenses/by/3.0/", 
      "license": "CC-BY-3.0"
    }
  ], 
  "copyright": [
    {
      "holder": "The Authors", 
      "statement": "The Authors", 
      "year": "2019"
    }
  ], 
  "control_number": "47747", 
  "record_creation_date": "2019-06-11T11:30:34.040360", 
  "_files": [
    {
      "checksum": "md5:a7582fe744242ec332c68e669d5f4fc1", 
      "filetype": "xml", 
      "bucket": "da8fceda-aa1d-4b98-875d-16af1277c015", 
      "version_id": "f4aab063-ee3d-4a2e-b6bd-2343f6f24ab2", 
      "key": "10.1016/j.physletb.2019.06.004.xml", 
      "size": 125390
    }, 
    {
      "checksum": "md5:35d7f9698a562d65dd045a8497bc9ced", 
      "filetype": "pdf", 
      "bucket": "da8fceda-aa1d-4b98-875d-16af1277c015", 
      "version_id": "bc5aa078-529d-42e4-9c04-581319100467", 
      "key": "10.1016/j.physletb.2019.06.004.pdf", 
      "size": 463484
    }, 
    {
      "checksum": "md5:da4b0f8abf45ddf5aeb9e34ff0118ab6", 
      "filetype": "pdf/a", 
      "bucket": "da8fceda-aa1d-4b98-875d-16af1277c015", 
      "version_id": "fd159d5a-26dd-4bad-84c2-cd404c2f85b2", 
      "key": "10.1016/j.physletb.2019.06.004_a.pdf", 
      "size": 813170
    }
  ], 
  "collections": [
    {
      "primary": "Physics Letters B"
    }
  ], 
  "abstracts": [
    {
      "source": "Elsevier", 
      "value": "Recent measurements of charm-hadron production in proton-proton collisions at the LHC have found a surprisingly large baryon to meson ratio. We propose that this observation can be explained by the statistical hadronization model (SHM), by employing a largely augmented set of charm-baryon states beyond the current listings of the particle data group. We estimate the additional states using guidance from the relativistic quark model and from lattice QCD. Using charm- and strange-quark fugacity factors to account for the well-known suppression of heavy flavor in elementary collisions, we compute the yields and spectra of D, <math><msub><mrow><mi>D</mi></mrow><mrow><mi>s</mi></mrow></msub></math> and <math><msub><mrow><mi>\u039b</mi></mrow><mrow><mi>c</mi></mrow></msub></math> hadrons in proton-proton collisions at <math><msqrt><mrow><mi>s</mi></mrow></msqrt><mo>=</mo><mn>5</mn></math> TeV. Our main finding is that the enhanced feeddown from excited charm baryons can account for the <math><msub><mrow><mi>\u039b</mi></mrow><mrow><mi>c</mi></mrow></msub><mo>/</mo><msup><mrow><mi>D</mi></mrow><mrow><mn>0</mn></mrow></msup></math> ratio measured by ALICE at midrapidity, with some caveat for the forward-rapidity LHCb data. Furthermore, assuming independent fragmentation of charm quarks but with the hadronic ratios fixed by the SHM, the measured transverse-momentum (<math><msub><mrow><mi>p</mi></mrow><mrow><mi>T</mi></mrow></msub></math>) spectra of D-mesons and <math><msub><mrow><mi>\u039b</mi></mrow><mrow><mi>c</mi></mrow></msub></math> can also be described; in particular, the low-<math><msub><mrow><mi>p</mi></mrow><mrow><mi>T</mi></mrow></msub></math> enhancement in the observed <math><msub><mrow><mi>\u039b</mi></mrow><mrow><mi>c</mi></mrow></msub></math>/<math><msup><mrow><mi>D</mi></mrow><mrow><mn>0</mn></mrow></msup></math> ratio is attributed to the enhanced feeddown from \u201cmissing\u201d charm-baryon states. We comment on the implications of these findings for measurements of <math><msub><mrow><mi>D</mi></mrow><mrow><mi>s</mi></mrow></msub></math> and <math><msub><mrow><mi>\u039b</mi></mrow><mrow><mi>c</mi></mrow></msub></math> in heavy-ion collisions."
    }
  ], 
  "imprints": [
    {
      "date": "2019-07-31", 
      "publisher": "Elsevier"
    }
  ]
}