{
  "_oai": {
    "updated": "2024-03-23T00:31:44Z", 
    "id": "oai:repo.scoap3.org:81201", 
    "sets": [
      "EPJC"
    ]
  }, 
  "authors": [
    {
      "affiliations": [
        {
          "country": "Japan", 
          "value": "Department of Physics, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan", 
          "organization": "Hokkaido University"
        }, 
        {
          "country": "Japan", 
          "value": "Natural Science Center, Keio University, Yokohama, 223-8521, Japan", 
          "organization": "Keio University"
        }
      ], 
      "surname": "Ishikawa", 
      "email": "ishikawa@particle.sci.hokudai.ac.jp", 
      "full_name": "Ishikawa, Kenzo", 
      "given_names": "Kenzo"
    }, 
    {
      "affiliations": [
        {
          "country": "Japan", 
          "value": "Department of Physics, Faculty of Science, Tokyo Institute of Technology, Tokyo, 152-8550, Japan", 
          "organization": "Tokyo Institute of Technology"
        }
      ], 
      "surname": "Jinnouchi", 
      "email": "jinnouchi@phys.titech.ac.jp", 
      "full_name": "Jinnouchi, Osamu", 
      "given_names": "Osamu"
    }, 
    {
      "affiliations": [
        {
          "country": "India", 
          "value": "Department of Physics, Shiv Nadar Institution of Eminence, Gautam Buddha Nagar, 201314, India", 
          "organization": "Shiv Nadar Institution of Eminence"
        }
      ], 
      "surname": "Nishiwaki", 
      "email": "kenji.nishiwaki@snu.edu.in", 
      "full_name": "Nishiwaki, Kenji", 
      "given_names": "Kenji"
    }, 
    {
      "affiliations": [
        {
          "country": "Japan", 
          "value": "Department of Mathematics, Tokyo Woman\u2019s Christian University, Tokyo, 167-8585, Japan", 
          "organization": "Tokyo Woman\u2019s Christian University"
        }
      ], 
      "surname": "Oda", 
      "email": "odakin@lab.twcu.ac.jp", 
      "full_name": "Oda, Kin-ya", 
      "given_names": "Kin-ya"
    }
  ], 
  "titles": [
    {
      "source": "Springer", 
      "title": "Wave-packet effects: a solution for isospin anomalies in vector-meson decay"
    }
  ], 
  "dois": [
    {
      "value": "10.1140/epjc/s10052-023-12077-7"
    }
  ], 
  "publication_info": [
    {
      "page_end": "32", 
      "journal_title": "European Physical Journal C", 
      "material": "article", 
      "journal_volume": "83", 
      "artid": "s10052-023-12077-7", 
      "year": 2023, 
      "page_start": "1", 
      "journal_issue": "10"
    }
  ], 
  "$schema": "http://repo.scoap3.org/schemas/hep.json", 
  "acquisition_source": {
    "date": "2024-03-23T00:30:47.974785", 
    "source": "Springer", 
    "method": "Springer", 
    "submission_number": "7ba03dd0e8ac11eeae4696b6a0e1ccbd"
  }, 
  "page_nr": [
    32
  ], 
  "license": [
    {
      "url": "https://creativecommons.org/licenses//by/4.0", 
      "license": "CC-BY-4.0"
    }
  ], 
  "copyright": [
    {
      "holder": "The Author(s)", 
      "year": "2023"
    }
  ], 
  "control_number": "81201", 
  "record_creation_date": "2023-10-30T21:30:22.594374", 
  "_files": [
    {
      "checksum": "md5:bdc9bb5fc233221d7d0d4574eb940aa4", 
      "filetype": "xml", 
      "bucket": "73a4f2e4-da19-4272-b5bc-e54363a45322", 
      "version_id": "49cf8970-0d95-4338-b3a3-049536ebd1dc", 
      "key": "10.1140/epjc/s10052-023-12077-7.xml", 
      "size": 21808
    }, 
    {
      "checksum": "md5:351d38b924ecb9c1f795568d734732d9", 
      "filetype": "pdf/a", 
      "bucket": "73a4f2e4-da19-4272-b5bc-e54363a45322", 
      "version_id": "bb86464a-ca23-470e-90f6-9e20a4183329", 
      "key": "10.1140/epjc/s10052-023-12077-7_a.pdf", 
      "size": 3271793
    }
  ], 
  "collections": [
    {
      "primary": "European Physical Journal C"
    }
  ], 
  "arxiv_eprints": [
    {
      "categories": [
        "hep-ph", 
        "hep-ex"
      ], 
      "value": "2308.09933"
    }
  ], 
  "abstracts": [
    {
      "source": "Springer", 
      "value": "There is a long-standing anomaly in the ratio of the decay width for  $$\\psi (3770)\\rightarrow D^0\\overline{D^0}$$  <math> <mrow> <mi>\u03c8</mi> <mrow> <mo>(</mo> <mn>3770</mn> <mo>)</mo> </mrow> <mo>\u2192</mo> <msup> <mi>D</mi> <mn>0</mn> </msup> <mover> <msup> <mi>D</mi> <mn>0</mn> </msup> <mo>\u00af</mo> </mover> </mrow> </math>   to that for  $$\\psi (3770)\\rightarrow D^+D^-$$  <math> <mrow> <mi>\u03c8</mi> <mrow> <mo>(</mo> <mn>3770</mn> <mo>)</mo> </mrow> <mo>\u2192</mo> <msup> <mi>D</mi> <mo>+</mo> </msup> <msup> <mi>D</mi> <mo>-</mo> </msup> </mrow> </math>   at the level of  $$9.5\\,\\sigma $$  <math> <mrow> <mn>9.5</mn> <mspace width=\"0.166667em\"></mspace> <mi>\u03c3</mi> </mrow> </math>  . A similar anomaly exists for the ratio of  $$\\phi (1020)\\rightarrow K_\\text {L}^0K_\\text {S}^0$$  <math> <mrow> <mi>\u03d5</mi> <mrow> <mo>(</mo> <mn>1020</mn> <mo>)</mo> </mrow> <mo>\u2192</mo> <msubsup> <mi>K</mi> <mtext>L</mtext> <mn>0</mn> </msubsup> <msubsup> <mi>K</mi> <mtext>S</mtext> <mn>0</mn> </msubsup> </mrow> </math>   to  $$\\phi (1020)\\rightarrow K^+K^-$$  <math> <mrow> <mi>\u03d5</mi> <mrow> <mo>(</mo> <mn>1020</mn> <mo>)</mo> </mrow> <mo>\u2192</mo> <msup> <mi>K</mi> <mo>+</mo> </msup> <msup> <mi>K</mi> <mo>-</mo> </msup> </mrow> </math>   at  $$2.1\\,\\sigma $$  <math> <mrow> <mn>2.1</mn> <mspace width=\"0.166667em\"></mspace> <mi>\u03c3</mi> </mrow> </math>  . In this study, we reassess the anomaly through the lens of a Gaussian wave-packet formalism. Our comprehensive calculations include the localization of the overlap of the wave packets near the mass thresholds and the composite nature of the initial-state vector mesons. The results align within a  $$\\sim 1 \\sigma $$  <math> <mrow> <mo>\u223c</mo> <mn>1</mn> <mi>\u03c3</mi> </mrow> </math>   confidence level with the Particle Data Group\u2019s central values for a physically reasonable value of the form-factor parameter, indicating a resolution to these anomalies. We also check the deviation of a wave-packet resonance from the Briet\u2013Wigner shape and find that wide ranges of the wave-packet size are consistent with the experimental data."
    }
  ], 
  "imprints": [
    {
      "date": "2023-10-30", 
      "publisher": "Springer"
    }
  ]
}