Study of the a1 (1269) resonance in the γp →π+π+π-n reaction Supported by the National Natural Science Foundation of China (11475227, 11735003), and the Youth Innovation Promotion Association CAS (2016367)

Xu Zhang (University of Chinese Academy of Sciences, Beijing 101408, China; Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China) ; Ju-Jun Xie (University of Chinese Academy of Sciences, Beijing 101408, China; Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China)

Within an effective Lagrangian approach and resonance model, we study the and reactions via the -exchange mechanism. For the reaction, we perform a calculation of the differential and total cross-sections by considering the contributions of the intermediate resonance decaying into and then into . Besides, the non-resonance process is also considered. With a lower mass of , the experimental data for the invariant mass distributions can be fairly well reproduced. For the reaction, with the model parameters, the total cross-section is of the order of 10 μb at the photon beam energy ~2.5 GeV. It is expected that the model calculations in this work could be tested by future experiments.

{
  "_oai": {
    "updated": "2019-10-21T11:32:29Z", 
    "id": "oai:repo.scoap3.org:48105", 
    "sets": [
      "CPC"
    ]
  }, 
  "authors": [
    {
      "raw_name": "Zhang, Xu", 
      "affiliations": [
        {
          "country": "China", 
          "value": "University of Chinese Academy of Sciences, Beijing 101408, China"
        }, 
        {
          "country": "China", 
          "value": "Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China"
        }
      ], 
      "surname": "Zhang", 
      "given_names": "Xu", 
      "full_name": "Zhang, Xu"
    }, 
    {
      "raw_name": "Xie, Ju-Jun", 
      "affiliations": [
        {
          "country": "China", 
          "value": "University of Chinese Academy of Sciences, Beijing 101408, China"
        }, 
        {
          "country": "China", 
          "value": "Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China"
        }
      ], 
      "surname": "Xie", 
      "given_names": "Ju-Jun", 
      "full_name": "Xie, Ju-Jun"
    }
  ], 
  "titles": [
    {
      "source": "Institute of Physics Publishing/Chinese Academy of Sciences", 
      "title": "Study of the a1 (1269) resonance in the \u03b3p \u2192\u03c0+\u03c0+\u03c0-n reaction Supported by the National Natural Science Foundation of China (11475227, 11735003), and the Youth Innovation Promotion Association CAS (2016367)"
    }
  ], 
  "dois": [
    {
      "value": "10.1088/1674-1137/43/6/064104"
    }
  ], 
  "publication_info": [
    {
      "page_start": "064104", 
      "journal_title": "Chinese Physics C", 
      "journal_issue": "6", 
      "year": 2019
    }
  ], 
  "$schema": "http://repo.scoap3.org/schemas/hep.json", 
  "acquisition_source": {
    "date": "2019-06-19T10:57:30.636998", 
    "source": "Institute of Physics Publishing/Chinese Academy of Sciences", 
    "method": "Institute of Physics Publishing/Chinese Academy of Sciences", 
    "submission_number": "426fe174927011e9883f02163e01809a"
  }, 
  "page_nr": [
    6
  ], 
  "license": [
    {
      "url": "http://creativecommons.org/licenses/by/3.0/", 
      "license": "CC-BY-3.0"
    }
  ], 
  "copyright": [
    {
      "statement": "\u00a9 2019 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd", 
      "year": "2019"
    }
  ], 
  "control_number": "48105", 
  "record_creation_date": "2019-06-19T11:03:50.674869", 
  "_files": [
    {
      "checksum": "md5:9406ecb4ca785238ed0689833eab4883", 
      "filetype": "xml", 
      "bucket": "4a59ef9a-7346-4687-958d-cdf5af25eec5", 
      "version_id": "9520035b-5cbd-4e10-b8e8-1dc50c5becf9", 
      "key": "10.1088/1674-1137/43/6/064104.xml", 
      "size": 127437
    }, 
    {
      "checksum": "md5:b8514b8d78cca157fc004666c6f3714c", 
      "filetype": "pdf", 
      "bucket": "4a59ef9a-7346-4687-958d-cdf5af25eec5", 
      "version_id": "f006168c-78de-45f2-83ba-39c7909e52fa", 
      "key": "10.1088/1674-1137/43/6/064104.pdf", 
      "size": 723807
    }
  ], 
  "arxiv_eprints": [
    {
      "categories": [
        "hep-ph"
      ], 
      "value": "arXiv:1812.04242"
    }
  ], 
  "abstracts": [
    {
      "source": "Institute of Physics Publishing/Chinese Academy of Sciences", 
      "value": "Within an effective Lagrangian approach and resonance model, we study the and reactions via the -exchange mechanism. For the reaction, we perform a calculation of the differential and total cross-sections by considering the contributions of the intermediate resonance decaying into and then into . Besides, the non-resonance process is also considered. With a lower mass of , the experimental data for the invariant mass distributions can be fairly well reproduced. For the reaction, with the model parameters, the total cross-section is of the order of 10 \u03bcb at the photon beam energy ~2.5 GeV. It is expected that the model calculations in this work could be tested by future experiments."
    }
  ], 
  "imprints": [
    {
      "date": "2019-06-01", 
      "publisher": "Institute of Physics Publishing/Chinese Academy of Sciences"
    }
  ]
}
Published on:
01 June 2019
Publisher:
Institute of Physics Publishing/Chinese Academy of Sciences
Published in:
Chinese Physics C (2019)
Issue 6
DOI:
https://doi.org/10.1088/1674-1137/43/6/064104
arXiv:
arXiv:1812.04242
Copyrights:
© 2019 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd
Licence:
CC-BY-3.0

Fulltext files: